Merge branch 'develop' into feature/TD-1413

src/client/inc/tscLocalMerge.h

@@ -84,9 +84,9 @@ typedef struct SRetrieveSupport {
 } SRetrieveSupport;
 
 int32_t tscLocalReducerEnvCreate(SSqlObj *pSql, tExtMemBuffer ***pMemBuffer, tOrderDescriptor **pDesc,
-                                 SColumnModel **pFinalModel, uint32_t nBufferSize);
+                                 SColumnModel **pFinalModel, SColumnModel** pFFModel, uint32_t nBufferSize);
 
-void tscLocalReducerEnvDestroy(tExtMemBuffer **pMemBuffer, tOrderDescriptor *pDesc, SColumnModel *pFinalModel,
+void tscLocalReducerEnvDestroy(tExtMemBuffer **pMemBuffer, tOrderDescriptor *pDesc, SColumnModel *pFinalModel, SColumnModel* pFFModel,
                                int32_t numOfVnodes);
 
 int32_t saveToBuffer(tExtMemBuffer *pMemoryBuf, tOrderDescriptor *pDesc, tFilePage *pPage, void *data,

src/client/inc/tscUtil.h

@@ -282,6 +282,7 @@ int  tscSetMgmtEpSetFromCfg(const char *first, const char *second);
 
 bool tscSetSqlOwner(SSqlObj* pSql);
 void tscClearSqlOwner(SSqlObj* pSql);
+int32_t doArithmeticCalculate(SQueryInfo* pQueryInfo, tFilePage* pOutput, int32_t rowSize, int32_t finalRowSize);
 
 void* malloc_throw(size_t size);
 void* calloc_throw(size_t nmemb, size_t size);

src/client/src/tscLocalMerge.c

@@ -30,8 +30,6 @@ typedef struct SCompareParam {
   int32_t            groupOrderType;
 } SCompareParam;
 
-static void doArithmeticCalculate(SQueryInfo* pQueryInfo, tFilePage* pOutput, int32_t rowSize, int32_t finalRowSize);
-
 int32_t treeComparator(const void *pLeft, const void *pRight, void *param) {
   int32_t pLeftIdx = *(int32_t *)pLeft;
   int32_t pRightIdx = *(int32_t *)pRight;
@@ -174,14 +172,14 @@ void tscCreateLocalReducer(tExtMemBuffer **pMemBuffer, int32_t numOfBuffer, tOrd
   SSqlRes* pRes = &pSql->res;
   
   if (pMemBuffer == NULL) {
-    tscLocalReducerEnvDestroy(pMemBuffer, pDesc, finalmodel, numOfBuffer);
+    tscLocalReducerEnvDestroy(pMemBuffer, pDesc, finalmodel, pFFModel, numOfBuffer);
     tscError("%p pMemBuffer is NULL", pMemBuffer);
     pRes->code = TSDB_CODE_TSC_APP_ERROR;
     return;
   }
  
   if (pDesc->pColumnModel == NULL) {
-    tscLocalReducerEnvDestroy(pMemBuffer, pDesc, finalmodel, numOfBuffer);
+    tscLocalReducerEnvDestroy(pMemBuffer, pDesc, finalmodel, pFFModel, numOfBuffer);
     tscError("%p no local buffer or intermediate result format model", pSql);
     pRes->code = TSDB_CODE_TSC_APP_ERROR;
     return;
@@ -199,7 +197,7 @@ void tscCreateLocalReducer(tExtMemBuffer **pMemBuffer, int32_t numOfBuffer, tOrd
   }
 
   if (numOfFlush == 0 || numOfBuffer == 0) {
-    tscLocalReducerEnvDestroy(pMemBuffer, pDesc, finalmodel, numOfBuffer);
+    tscLocalReducerEnvDestroy(pMemBuffer, pDesc, finalmodel, pFFModel, numOfBuffer);
     tscDebug("%p retrieved no data", pSql);
     return;
   }
@@ -208,7 +206,7 @@ void tscCreateLocalReducer(tExtMemBuffer **pMemBuffer, int32_t numOfBuffer, tOrd
     tscError("%p Invalid value of buffer capacity %d and page size %d ", pSql, pDesc->pColumnModel->capacity,
              pMemBuffer[0]->pageSize);
 
-    tscLocalReducerEnvDestroy(pMemBuffer, pDesc, finalmodel, numOfBuffer);
+    tscLocalReducerEnvDestroy(pMemBuffer, pDesc, finalmodel, pFFModel, numOfBuffer);
     pRes->code = TSDB_CODE_TSC_APP_ERROR;
     return;
   }
@@ -219,7 +217,7 @@ void tscCreateLocalReducer(tExtMemBuffer **pMemBuffer, int32_t numOfBuffer, tOrd
   if (pReducer == NULL) {
     tscError("%p failed to create local merge structure, out of memory", pSql);
 
-    tscLocalReducerEnvDestroy(pMemBuffer, pDesc, finalmodel, numOfBuffer);
+    tscLocalReducerEnvDestroy(pMemBuffer, pDesc, finalmodel, pFFModel, numOfBuffer);
     pRes->code = TSDB_CODE_TSC_OUT_OF_MEMORY;
     return;
   }
@@ -336,6 +334,8 @@ void tscCreateLocalReducer(tExtMemBuffer **pMemBuffer, int32_t numOfBuffer, tOrd
   pReducer->resColModel = finalmodel;
   pReducer->resColModel->capacity = pReducer->nResultBufSize;
 
+  pReducer->finalModel = pFFModel;
+
   assert(pReducer->finalRowSize > 0);
   if (pReducer->finalRowSize > 0) {
     pReducer->resColModel->capacity /= pReducer->finalRowSize;
@@ -533,7 +533,7 @@ void tscDestroyLocalReducer(SSqlObj *pSql) {
     tfree(pLocalReducer->pFinalRes);
     tfree(pLocalReducer->discardData);
 
-    tscLocalReducerEnvDestroy(pLocalReducer->pExtMemBuffer, pLocalReducer->pDesc, pLocalReducer->resColModel,
+    tscLocalReducerEnvDestroy(pLocalReducer->pExtMemBuffer, pLocalReducer->pDesc, pLocalReducer->resColModel, pLocalReducer->finalModel,
                               pLocalReducer->numOfVnode);
     for (int32_t i = 0; i < pLocalReducer->numOfBuffer; ++i) {
       tfree(pLocalReducer->pLocalDataSrc[i]);
@@ -657,7 +657,7 @@ bool isSameGroup(SSqlCmd *pCmd, SLocalReducer *pReducer, char *pPrev, tFilePage
 }
 
 int32_t tscLocalReducerEnvCreate(SSqlObj *pSql, tExtMemBuffer ***pMemBuffer, tOrderDescriptor **pOrderDesc,
-                                 SColumnModel **pFinalModel, uint32_t nBufferSizes) {
+                                 SColumnModel **pFinalModel, SColumnModel** pFFModel, uint32_t nBufferSizes) {
   SSqlCmd *pCmd = &pSql->cmd;
   SSqlRes *pRes = &pSql->res;
 
@@ -755,6 +755,18 @@ int32_t tscLocalReducerEnvCreate(SSqlObj *pSql, tExtMemBuffer ***pMemBuffer, tOr
   
   *pFinalModel = createColumnModel(pSchema, (int32_t)size, capacity);
 
+  memset(pSchema, 0, sizeof(SSchema) * size);
+  size = tscNumOfFields(pQueryInfo);
+
+  for(int32_t i = 0; i < size; ++i) {
+    SInternalField* pField = tscFieldInfoGetInternalField(&pQueryInfo->fieldsInfo, i);
+    pSchema[i].bytes = pField->field.bytes;
+    pSchema[i].type = pField->field.type;
+    tstrncpy(pSchema[i].name, pField->field.name, tListLen(pSchema[i].name));
+  }
+
+  *pFFModel = createColumnModel(pSchema, (int32_t) size, capacity);
+
    tfree(pSchema);
   return TSDB_CODE_SUCCESS;
 }
@@ -765,9 +777,11 @@ int32_t tscLocalReducerEnvCreate(SSqlObj *pSql, tExtMemBuffer ***pMemBuffer, tOr
  * @param pFinalModel
  * @param numOfVnodes
  */
-void tscLocalReducerEnvDestroy(tExtMemBuffer **pMemBuffer, tOrderDescriptor *pDesc, SColumnModel *pFinalModel,
+void tscLocalReducerEnvDestroy(tExtMemBuffer **pMemBuffer, tOrderDescriptor *pDesc, SColumnModel *pFinalModel, SColumnModel *pFFModel,
                                int32_t numOfVnodes) {
   destroyColumnModel(pFinalModel);
+  destroyColumnModel(pFFModel);
+
   tOrderDescDestroy(pDesc);
 
   for (int32_t i = 0; i < numOfVnodes; ++i) {
@@ -875,10 +889,10 @@ static void genFinalResWithoutFill(SSqlRes* pRes, SLocalReducer *pLocalReducer,
   if (pQueryInfo->limit.offset > 0) {
     if (pQueryInfo->limit.offset < pRes->numOfRows) {
       int32_t prevSize = (int32_t)pBeforeFillData->num;
-      tColModelErase(pLocalReducer->resColModel, pBeforeFillData, prevSize, 0, (int32_t)pQueryInfo->limit.offset - 1);
+      tColModelErase(pLocalReducer->finalModel, pBeforeFillData, prevSize, 0, (int32_t)pQueryInfo->limit.offset - 1);
 
       /* remove the hole in column model */
-      tColModelCompact(pLocalReducer->resColModel, pBeforeFillData, prevSize);
+      tColModelCompact(pLocalReducer->finalModel, pBeforeFillData, prevSize);
 
       pRes->numOfRows -= pQueryInfo->limit.offset;
       pQueryInfo->limit.offset = 0;
@@ -900,7 +914,7 @@ static void genFinalResWithoutFill(SSqlRes* pRes, SLocalReducer *pLocalReducer,
     pRes->numOfRows -= overflow;
     pBeforeFillData->num -= overflow;
 
-    tColModelCompact(pLocalReducer->resColModel, pBeforeFillData, prevSize);
+    tColModelCompact(pLocalReducer->finalModel, pBeforeFillData, prevSize);
 
     // set remain data to be discarded, and reset the interpolation information
     savePrevRecordAndSetupFillInfo(pLocalReducer, pQueryInfo, pLocalReducer->pFillInfo);
@@ -1242,7 +1256,7 @@ bool genFinalResults(SSqlObj *pSql, SLocalReducer *pLocalReducer, bool noMoreCur
   tColModelCompact(pModel, pResBuf, pModel->capacity);
 
   if (tscIsSecondStageQuery(pQueryInfo)) {
-    doArithmeticCalculate(pQueryInfo, pResBuf, pModel->rowSize, pLocalReducer->finalRowSize);
+    pLocalReducer->finalRowSize = doArithmeticCalculate(pQueryInfo, pResBuf, pModel->rowSize, pLocalReducer->finalRowSize);
   }
 
 #ifdef _DEBUG_VIEW
@@ -1612,7 +1626,7 @@ void tscInitResObjForLocalQuery(SSqlObj *pObj, int32_t numOfRes, int32_t rowLen)
   pRes->data = pRes->pLocalReducer->pResultBuf->data;
 }
 
-void doArithmeticCalculate(SQueryInfo* pQueryInfo, tFilePage* pOutput, int32_t rowSize, int32_t finalRowSize) {
+int32_t doArithmeticCalculate(SQueryInfo* pQueryInfo, tFilePage* pOutput, int32_t rowSize, int32_t finalRowSize) {
   char* pbuf = calloc(1, pOutput->num * rowSize);
 
   size_t size = tscNumOfFields(pQueryInfo);
@@ -1647,8 +1661,10 @@ void doArithmeticCalculate(SQueryInfo* pQueryInfo, tFilePage* pOutput, int32_t r
   }
 
   assert(finalRowSize <= rowSize);
-  memcpy(pOutput->data, pbuf, pOutput->num * finalRowSize);
+  memcpy(pOutput->data, pbuf, pOutput->num * offset);
 
   tfree(pbuf);
   tfree(arithSup.data);
+
+  return offset;
 }

src/client/src/tscServer.c

@@ -547,7 +547,7 @@ static int32_t tscEstimateQueryMsgSize(SSqlCmd *pCmd, int32_t clauseIndex) {
   int32_t srcColListSize = (int32_t)(taosArrayGetSize(pQueryInfo->colList) * sizeof(SColumnInfo));
 
   size_t  numOfExprs = tscSqlExprNumOfExprs(pQueryInfo);
-  int32_t exprSize = (int32_t)(sizeof(SSqlFuncMsg) * numOfExprs);
+  int32_t exprSize = (int32_t)(sizeof(SSqlFuncMsg) * numOfExprs * 2);
 
   int32_t tsBufSize = (pQueryInfo->tsBuf != NULL) ? pQueryInfo->tsBuf->fileSize : 0;
 
@@ -787,8 +787,10 @@ int tscBuildQueryMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
     pSqlFuncExpr = (SSqlFuncMsg *)pMsg;
   }
 
-  if(tscIsSecondStageQuery(pQueryInfo)) {
+  size_t output = tscNumOfFields(pQueryInfo);
-    size_t output = tscNumOfFields(pQueryInfo);
+
+  if ((tscIsSecondStageQuery(pQueryInfo) || UTIL_TABLE_IS_NORMAL_TABLE(pTableMetaInfo) ||
+      UTIL_TABLE_IS_CHILD_TABLE(pTableMetaInfo)) && (output != tscSqlExprNumOfExprs(pQueryInfo))) {
     pQueryMsg->secondStageOutput = htonl((int32_t) output);
 
     SSqlFuncMsg *pSqlFuncExpr1 = (SSqlFuncMsg *)pMsg;

src/client/src/tscSubquery.c

@@ -1644,6 +1644,7 @@ int32_t tscHandleMasterSTableQuery(SSqlObj *pSql) {
   tExtMemBuffer **  pMemoryBuf = NULL;
   tOrderDescriptor *pDesc  = NULL;
   SColumnModel     *pModel = NULL;
+  SColumnModel     *pFinalModel = NULL;
 
   pRes->qhandle = 0x1;  // hack the qhandle check
   
@@ -1662,7 +1663,7 @@ int32_t tscHandleMasterSTableQuery(SSqlObj *pSql) {
 
   assert(pState->numOfSub > 0);
   
-  int32_t ret = tscLocalReducerEnvCreate(pSql, &pMemoryBuf, &pDesc, &pModel, nBufferSize);
+  int32_t ret = tscLocalReducerEnvCreate(pSql, &pMemoryBuf, &pDesc, &pModel, &pFinalModel, nBufferSize);
   if (ret != 0) {
     pRes->code = TSDB_CODE_TSC_OUT_OF_MEMORY;
     tscQueueAsyncRes(pSql);
@@ -1677,7 +1678,7 @@ int32_t tscHandleMasterSTableQuery(SSqlObj *pSql) {
   if (pSql->pSubs == NULL) {
     tfree(pSql->pSubs);
     pRes->code = TSDB_CODE_TSC_OUT_OF_MEMORY;
-    tscLocalReducerEnvDestroy(pMemoryBuf, pDesc, pModel, pState->numOfSub);
+    tscLocalReducerEnvDestroy(pMemoryBuf, pDesc, pModel, pFinalModel,pState->numOfSub);
 
     tscQueueAsyncRes(pSql);
     return ret;
@@ -1707,6 +1708,7 @@ int32_t tscHandleMasterSTableQuery(SSqlObj *pSql) {
     trs->subqueryIndex  = i;
     trs->pParentSql     = pSql;
     trs->pFinalColModel = pModel;
+    trs->pFFColModel    = pFinalModel;
 
     SSqlObj *pNew = tscCreateSTableSubquery(pSql, trs, NULL);
     if (pNew == NULL) {
@@ -1730,13 +1732,13 @@ int32_t tscHandleMasterSTableQuery(SSqlObj *pSql) {
     tscError("%p failed to prepare subquery structure and launch subqueries", pSql);
     pRes->code = TSDB_CODE_TSC_OUT_OF_MEMORY;
     
-    tscLocalReducerEnvDestroy(pMemoryBuf, pDesc, pModel, pState->numOfSub);
+    tscLocalReducerEnvDestroy(pMemoryBuf, pDesc, pModel, pFinalModel, pState->numOfSub);
     doCleanupSubqueries(pSql, i);
     return pRes->code;   // free all allocated resource
   }
   
   if (pRes->code == TSDB_CODE_TSC_QUERY_CANCELLED) {
-    tscLocalReducerEnvDestroy(pMemoryBuf, pDesc, pModel, pState->numOfSub);
+    tscLocalReducerEnvDestroy(pMemoryBuf, pDesc, pModel, pFinalModel, pState->numOfSub);
     doCleanupSubqueries(pSql, i);
     return pRes->code;
   }
@@ -1876,7 +1878,7 @@ void tscHandleSubqueryError(SRetrieveSupport *trsupport, SSqlObj *pSql, int numO
       tstrerror(pParentSql->res.code));
 
   // release allocated resource
-  tscLocalReducerEnvDestroy(trsupport->pExtMemBuffer, trsupport->pOrderDescriptor, trsupport->pFinalColModel,
+  tscLocalReducerEnvDestroy(trsupport->pExtMemBuffer, trsupport->pOrderDescriptor, trsupport->pFinalColModel, trsupport->pFFColModel,
                             pState->numOfSub);
   
   tscFreeRetrieveSup(pSql);
@@ -2312,10 +2314,10 @@ static void doBuildResFromSubqueries(SSqlObj* pSql) {
     return;
   }
 
-  int32_t totalSize = tscGetResRowLength(pQueryInfo->exprList);
+  int32_t rowSize = tscGetResRowLength(pQueryInfo->exprList);
 
-  assert(numOfRes * totalSize > 0);
+  assert(numOfRes * rowSize > 0);
-  char* tmp = realloc(pRes->pRsp, numOfRes * totalSize);
+  char* tmp = realloc(pRes->pRsp, numOfRes * rowSize + sizeof(tFilePage));
   if (tmp == NULL) {
     pRes->code = TSDB_CODE_TSC_OUT_OF_MEMORY;
     return;
@@ -2323,9 +2325,12 @@ static void doBuildResFromSubqueries(SSqlObj* pSql) {
     pRes->pRsp = tmp;
   }
 
-  pRes->data = pRes->pRsp;
+  tFilePage* pFilePage = (tFilePage*) pRes->pRsp;
+  pFilePage->num = numOfRes;
 
+  pRes->data = pFilePage->data;
   char* data = pRes->data;
+
   int16_t bytes = 0;
 
   size_t numOfExprs = tscSqlExprNumOfExprs(pQueryInfo);
@@ -2352,6 +2357,16 @@ static void doBuildResFromSubqueries(SSqlObj* pSql) {
 
   pRes->numOfRows = numOfRes;
   pRes->numOfClauseTotal += numOfRes;
+
+  int32_t finalRowSize = 0;
+  for(int32_t i = 0; i < tscNumOfFields(pQueryInfo); ++i) {
+    TAOS_FIELD* pField = tscFieldInfoGetField(&pQueryInfo->fieldsInfo, i);
+    finalRowSize += pField->bytes;
+  }
+
+  doArithmeticCalculate(pQueryInfo, pFilePage, rowSize, finalRowSize);
+
+  pRes->data = pFilePage->data;
 }
 
 void tscBuildResFromSubqueries(SSqlObj *pSql) {

src/connector/jdbc/pom.xml

@@ -56,6 +56,23 @@
             <scope>test</scope>
         </dependency>
 
+        <!-- for restful -->
+        <dependency>
+            <groupId>org.apache.httpcomponents</groupId>
+            <artifactId>httpclient</artifactId>
+            <version>4.5.8</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>3.9</version>
+        </dependency>
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>fastjson</artifactId>
+            <version>1.2.58</version>
+        </dependency>
+
     </dependencies>
     <build>
         <plugins>

src/connector/jdbc/src/main/java/com/taosdata/jdbc/AbstractTaosDriver.java

@@ -0,0 +1,161 @@
+package com.taosdata.jdbc;
+
+import java.io.*;
+import java.sql.Driver;
+import java.sql.DriverPropertyInfo;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Properties;
+import java.util.StringTokenizer;
+
+public abstract class AbstractTaosDriver implements Driver {
+
+    private static final String TAOS_CFG_FILENAME = "taos.cfg";
+
+    /**
+     * @param cfgDirPath
+     * @return return the config dir
+     **/
+    protected File loadConfigDir(String cfgDirPath) {
+        if (cfgDirPath == null)
+            return loadDefaultConfigDir();
+        File cfgDir = new File(cfgDirPath);
+        if (!cfgDir.exists())
+            return loadDefaultConfigDir();
+        return cfgDir;
+    }
+
+    /**
+     * @return search the default config dir, if the config dir is not exist will return null
+     */
+    protected File loadDefaultConfigDir() {
+        File cfgDir;
+        File cfgDir_linux = new File("/etc/taos");
+        cfgDir = cfgDir_linux.exists() ? cfgDir_linux : null;
+        File cfgDir_windows = new File("C:\\TDengine\\cfg");
+        cfgDir = (cfgDir == null && cfgDir_windows.exists()) ? cfgDir_windows : cfgDir;
+        return cfgDir;
+    }
+
+    protected List<String> loadConfigEndpoints(File cfgFile) {
+        List<String> endpoints = new ArrayList<>();
+        try (BufferedReader reader = new BufferedReader(new FileReader(cfgFile))) {
+            String line = null;
+            while ((line = reader.readLine()) != null) {
+                if (line.trim().startsWith("firstEp") || line.trim().startsWith("secondEp")) {
+                    endpoints.add(line.substring(line.indexOf('p') + 1).trim());
+                }
+                if (endpoints.size() > 1)
+                    break;
+            }
+        } catch (FileNotFoundException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return endpoints;
+    }
+
+    protected void loadTaosConfig(Properties info) {
+        if ((info.getProperty(TSDBDriver.PROPERTY_KEY_HOST) == null ||
+                info.getProperty(TSDBDriver.PROPERTY_KEY_HOST).isEmpty()) && (
+                info.getProperty(TSDBDriver.PROPERTY_KEY_PORT) == null ||
+                        info.getProperty(TSDBDriver.PROPERTY_KEY_PORT).isEmpty())) {
+            File cfgDir = loadConfigDir(info.getProperty(TSDBDriver.PROPERTY_KEY_CONFIG_DIR));
+            File cfgFile = cfgDir.listFiles((dir, name) -> TAOS_CFG_FILENAME.equalsIgnoreCase(name))[0];
+            List<String> endpoints = loadConfigEndpoints(cfgFile);
+            if (!endpoints.isEmpty()) {
+                info.setProperty(TSDBDriver.PROPERTY_KEY_HOST, endpoints.get(0).split(":")[0]);
+                info.setProperty(TSDBDriver.PROPERTY_KEY_PORT, endpoints.get(0).split(":")[1]);
+            }
+        }
+    }
+
+    protected DriverPropertyInfo[] getPropertyInfo(Properties info) {
+        DriverPropertyInfo hostProp = new DriverPropertyInfo(TSDBDriver.PROPERTY_KEY_HOST, info.getProperty(TSDBDriver.PROPERTY_KEY_HOST));
+        hostProp.required = false;
+        hostProp.description = "Hostname";
+
+        DriverPropertyInfo portProp = new DriverPropertyInfo(TSDBDriver.PROPERTY_KEY_PORT, info.getProperty(TSDBDriver.PROPERTY_KEY_PORT, TSDBConstants.DEFAULT_PORT));
+        portProp.required = false;
+        portProp.description = "Port";
+
+        DriverPropertyInfo dbProp = new DriverPropertyInfo(TSDBDriver.PROPERTY_KEY_DBNAME, info.getProperty(TSDBDriver.PROPERTY_KEY_DBNAME));
+        dbProp.required = false;
+        dbProp.description = "Database name";
+
+        DriverPropertyInfo userProp = new DriverPropertyInfo(TSDBDriver.PROPERTY_KEY_USER, info.getProperty(TSDBDriver.PROPERTY_KEY_USER));
+        userProp.required = true;
+        userProp.description = "User";
+
+        DriverPropertyInfo passwordProp = new DriverPropertyInfo(TSDBDriver.PROPERTY_KEY_PASSWORD, info.getProperty(TSDBDriver.PROPERTY_KEY_PASSWORD));
+        passwordProp.required = true;
+        passwordProp.description = "Password";
+
+        DriverPropertyInfo[] propertyInfo = new DriverPropertyInfo[5];
+        propertyInfo[0] = hostProp;
+        propertyInfo[1] = portProp;
+        propertyInfo[2] = dbProp;
+        propertyInfo[3] = userProp;
+        propertyInfo[4] = passwordProp;
+        return propertyInfo;
+    }
+
+    protected Properties parseURL(String url, Properties defaults) {
+        Properties urlProps = (defaults != null) ? defaults : new Properties();
+
+        // parse properties
+        int beginningOfSlashes = url.indexOf("//");
+        int index = url.indexOf("?");
+        if (index != -1) {
+            String paramString = url.substring(index + 1, url.length());
+            url = url.substring(0, index);
+            StringTokenizer queryParams = new StringTokenizer(paramString, "&");
+            while (queryParams.hasMoreElements()) {
+                String parameterValuePair = queryParams.nextToken();
+                int indexOfEqual = parameterValuePair.indexOf("=");
+                String parameter = null;
+                String value = null;
+                if (indexOfEqual != -1) {
+                    parameter = parameterValuePair.substring(0, indexOfEqual);
+                    if (indexOfEqual + 1 < parameterValuePair.length()) {
+                        value = parameterValuePair.substring(indexOfEqual + 1);
+                    }
+                }
+                if ((value != null && value.length() > 0) && (parameter != null && parameter.length() > 0)) {
+                    urlProps.setProperty(parameter, value);
+                }
+            }
+        }
+
+        // parse Product Name
+        String dbProductName = url.substring(0, beginningOfSlashes);
+        dbProductName = dbProductName.substring(dbProductName.indexOf(":") + 1);
+        dbProductName = dbProductName.substring(0, dbProductName.indexOf(":"));
+        // parse dbname
+        url = url.substring(beginningOfSlashes + 2);
+        int indexOfSlash = url.indexOf("/");
+        if (indexOfSlash != -1) {
+            if (indexOfSlash + 1 < url.length()) {
+                urlProps.setProperty(TSDBDriver.PROPERTY_KEY_DBNAME, url.substring(indexOfSlash + 1));
+            }
+            url = url.substring(0, indexOfSlash);
+        }
+        // parse port
+        int indexOfColon = url.indexOf(":");
+        if (indexOfColon != -1) {
+            if (indexOfColon + 1 < url.length()) {
+                urlProps.setProperty(TSDBDriver.PROPERTY_KEY_PORT, url.substring(indexOfColon + 1));
+            }
+            url = url.substring(0, indexOfColon);
+        }
+        // parse host
+        if (url != null && url.length() > 0 && url.trim().length() > 0) {
+            urlProps.setProperty(TSDBDriver.PROPERTY_KEY_HOST, url);
+        }
+        return urlProps;
+    }
+
+
+
+}

src/connector/jdbc/src/main/java/com/taosdata/jdbc/TSDBDriver.java

@@ -14,7 +14,6 @@
  *****************************************************************************/
 package com.taosdata.jdbc;
 
-import java.io.*;
 import java.sql.*;
 import java.util.*;
 import java.util.logging.Logger;
@@ -38,7 +37,7 @@ import java.util.logging.Logger;
  * register it with the DriverManager. This means that a user can load and
  * register a driver by doing Class.forName("foo.bah.Driver")
  */
-public class TSDBDriver implements java.sql.Driver {
+public class TSDBDriver extends AbstractTaosDriver {
 
     @Deprecated
     private static final String URL_PREFIX1 = "jdbc:TSDB://";
@@ -97,50 +96,6 @@ public class TSDBDriver implements java.sql.Driver {
         }
     }
 
-    private List<String> loadConfigEndpoints(File cfgFile) {
-        List<String> endpoints = new ArrayList<>();
-        try (BufferedReader reader = new BufferedReader(new FileReader(cfgFile))) {
-            String line = null;
-            while ((line = reader.readLine()) != null) {
-                if (line.trim().startsWith("firstEp") || line.trim().startsWith("secondEp")) {
-                    endpoints.add(line.substring(line.indexOf('p') + 1).trim());
-                }
-                if (endpoints.size() > 1)
-                    break;
-            }
-        } catch (FileNotFoundException e) {
-            e.printStackTrace();
-        } catch (IOException e) {
-            e.printStackTrace();
-        }
-        return endpoints;
-    }
-
-    /**
-     * @param cfgDirPath
-     * @return return the config dir
-     **/
-    private File loadConfigDir(String cfgDirPath) {
-        if (cfgDirPath == null)
-            return loadDefaultConfigDir();
-        File cfgDir = new File(cfgDirPath);
-        if (!cfgDir.exists())
-            return loadDefaultConfigDir();
-        return cfgDir;
-    }
-
-    /**
-     * @return search the default config dir, if the config dir is not exist will return null
-     */
-    private File loadDefaultConfigDir() {
-        File cfgDir;
-        File cfgDir_linux = new File("/etc/taos");
-        cfgDir = cfgDir_linux.exists() ? cfgDir_linux : null;
-        File cfgDir_windows = new File("C:\\TDengine\\cfg");
-        cfgDir = (cfgDir == null && cfgDir_windows.exists()) ? cfgDir_windows : cfgDir;
-        return cfgDir;
-    }
-
     public Connection connect(String url, Properties info) throws SQLException {
         if (url == null)
             throw new SQLException(TSDBConstants.WrapErrMsg("url is not set!"));
@@ -152,26 +107,12 @@ public class TSDBDriver implements java.sql.Driver {
         if ((props = parseURL(url, info)) == null) {
             return null;
         }
-
         //load taos.cfg start
-        if ((info.getProperty(TSDBDriver.PROPERTY_KEY_HOST) == null ||
+        loadTaosConfig(info);
-                info.getProperty(TSDBDriver.PROPERTY_KEY_HOST).isEmpty()) && (
-                info.getProperty(TSDBDriver.PROPERTY_KEY_PORT) == null ||
-                        info.getProperty(TSDBDriver.PROPERTY_KEY_PORT).isEmpty())) {
-            File cfgDir = loadConfigDir(info.getProperty(TSDBDriver.PROPERTY_KEY_CONFIG_DIR));
-            File cfgFile = cfgDir.listFiles((dir, name) -> "taos.cfg".equalsIgnoreCase(name))[0];
-            List<String> endpoints = loadConfigEndpoints(cfgFile);
-            if (!endpoints.isEmpty()) {
-                info.setProperty(TSDBDriver.PROPERTY_KEY_HOST, endpoints.get(0).split(":")[0]);
-                info.setProperty(TSDBDriver.PROPERTY_KEY_PORT, endpoints.get(0).split(":")[1]);
-            }
-        }
 
         try {
-            TSDBJNIConnector.init((String) props.get(PROPERTY_KEY_CONFIG_DIR),
+            TSDBJNIConnector.init((String) props.get(PROPERTY_KEY_CONFIG_DIR), (String) props.get(PROPERTY_KEY_LOCALE),
-                    (String) props.get(PROPERTY_KEY_LOCALE),
+                    (String) props.get(PROPERTY_KEY_CHARSET), (String) props.get(PROPERTY_KEY_TIME_ZONE));
-                    (String) props.get(PROPERTY_KEY_CHARSET),
-                    (String) props.get(PROPERTY_KEY_TIME_ZONE));
             Connection newConn = new TSDBConnection(props, this.dbMetaData);
             return newConn;
         } catch (SQLWarning sqlWarning) {
@@ -208,39 +149,13 @@ public class TSDBDriver implements java.sql.Driver {
             info = parseURL(url, info);
         }
 
-        DriverPropertyInfo hostProp = new DriverPropertyInfo(PROPERTY_KEY_HOST, info.getProperty(PROPERTY_KEY_HOST));
+        return getPropertyInfo(info);
-        hostProp.required = false;
-        hostProp.description = "Hostname";
-
-        DriverPropertyInfo portProp = new DriverPropertyInfo(PROPERTY_KEY_PORT, info.getProperty(PROPERTY_KEY_PORT, TSDBConstants.DEFAULT_PORT));
-        portProp.required = false;
-        portProp.description = "Port";
-
-        DriverPropertyInfo dbProp = new DriverPropertyInfo(PROPERTY_KEY_DBNAME, info.getProperty(PROPERTY_KEY_DBNAME));
-        dbProp.required = false;
-        dbProp.description = "Database name";
-
-        DriverPropertyInfo userProp = new DriverPropertyInfo(PROPERTY_KEY_USER, info.getProperty(PROPERTY_KEY_USER));
-        userProp.required = true;
-        userProp.description = "User";
-
-        DriverPropertyInfo passwordProp = new DriverPropertyInfo(PROPERTY_KEY_PASSWORD, info.getProperty(PROPERTY_KEY_PASSWORD));
-        passwordProp.required = true;
-        passwordProp.description = "Password";
-
-        DriverPropertyInfo[] propertyInfo = new DriverPropertyInfo[5];
-        propertyInfo[0] = hostProp;
-        propertyInfo[1] = portProp;
-        propertyInfo[2] = dbProp;
-        propertyInfo[3] = userProp;
-        propertyInfo[4] = passwordProp;
-
-        return propertyInfo;
     }
 
     /**
      * example: jdbc:TAOS://127.0.0.1:0/db?user=root&password=your_password
      */
+    @Override
     public Properties parseURL(String url, Properties defaults) {
         Properties urlProps = (defaults != null) ? defaults : new Properties();
         if (url == null || url.length() <= 0 || url.trim().length() <= 0)
@@ -296,86 +211,10 @@ public class TSDBDriver implements java.sql.Driver {
         if (url != null && url.length() > 0 && url.trim().length() > 0) {
             urlProps.setProperty(TSDBDriver.PROPERTY_KEY_HOST, url);
         }
-
         this.dbMetaData = new TSDBDatabaseMetaData(dbProductName, urlForMeta, urlProps.getProperty(TSDBDriver.PROPERTY_KEY_USER));
-
-        /*
-        String urlForMeta = url;
-        String dbProductName = url.substring(url.indexOf(":") + 1);
-        dbProductName = dbProductName.substring(0, dbProductName.indexOf(":"));
-        int beginningOfSlashes = url.indexOf("//");
-        url = url.substring(beginningOfSlashes + 2);
-
-        String host = url.substring(0, url.indexOf(":"));
-        url = url.substring(url.indexOf(":") + 1);
-        urlProps.setProperty(PROPERTY_KEY_HOST, host);
-
-        String port = url.substring(0, url.indexOf("/"));
-        urlProps.setProperty(PROPERTY_KEY_PORT, port);
-        url = url.substring(url.indexOf("/") + 1);
-
-        if (url.indexOf("?") != -1) {
-            String dbName = url.substring(0, url.indexOf("?"));
-            urlProps.setProperty(PROPERTY_KEY_DBNAME, dbName);
-            url = url.trim().substring(url.indexOf("?") + 1);
-        } else {
-            // without user & password so return
-            if (!url.trim().isEmpty()) {
-                String dbName = url.trim();
-                urlProps.setProperty(PROPERTY_KEY_DBNAME, dbName);
-            }
-            this.dbMetaData = new TSDBDatabaseMetaData(dbProductName, urlForMeta, urlProps.getProperty("user"));
-            return urlProps;
-        }
-
-        String user = "";
-
-        if (url.indexOf("&") == -1) {
-            String[] kvPair = url.trim().split("=");
-            if (kvPair.length == 2) {
-                setPropertyValue(urlProps, kvPair);
-                return urlProps;
-            }
-        }
-
-        String[] queryStrings = url.trim().split("&");
-        for (String queryStr : queryStrings) {
-            String[] kvPair = queryStr.trim().split("=");
-            if (kvPair.length < 2) {
-                continue;
-            }
-            setPropertyValue(urlProps, kvPair);
-        }
-
-        user = urlProps.getProperty(PROPERTY_KEY_USER).toString();
-        this.dbMetaData = new TSDBDatabaseMetaData(dbProductName, urlForMeta, user);
-*/
         return urlProps;
     }
 
-    private void setPropertyValue(Properties property, String[] keyValuePair) {
-        switch (keyValuePair[0].toLowerCase()) {
-            case PROPERTY_KEY_USER:
-                property.setProperty(PROPERTY_KEY_USER, keyValuePair[1]);
-                break;
-            case PROPERTY_KEY_PASSWORD:
-                property.setProperty(PROPERTY_KEY_PASSWORD, keyValuePair[1]);
-                break;
-            case PROPERTY_KEY_TIME_ZONE:
-                property.setProperty(PROPERTY_KEY_TIME_ZONE, keyValuePair[1]);
-                break;
-            case PROPERTY_KEY_LOCALE:
-                property.setProperty(PROPERTY_KEY_LOCALE, keyValuePair[1]);
-                break;
-            case PROPERTY_KEY_CHARSET:
-                property.setProperty(PROPERTY_KEY_CHARSET, keyValuePair[1]);
-                break;
-            case PROPERTY_KEY_CONFIG_DIR:
-                property.setProperty(PROPERTY_KEY_CONFIG_DIR, keyValuePair[1]);
-                break;
-        }
-    }
-
     public int getMajorVersion() {
         return 2;
     }

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulConnection.java

@@ -0,0 +1,319 @@
+package com.taosdata.jdbc.rs;
+
+import com.taosdata.jdbc.TSDBConstants;
+
+import java.sql.*;
+import java.util.Map;
+import java.util.Properties;
+import java.util.concurrent.Executor;
+
+public class RestfulConnection implements Connection {
+
+    private final String host;
+    private final int port;
+    private final Properties props;
+    private final String database;
+    private final String url;
+
+
+    public RestfulConnection(String host, String port, Properties props, String database, String url) {
+        this.host = host;
+        this.port = Integer.parseInt(port);
+        this.props = props;
+        this.database = database;
+        this.url = url;
+    }
+
+    @Override
+    public Statement createStatement() throws SQLException {
+        if (isClosed())
+            throw new SQLException(TSDBConstants.WrapErrMsg("restful TDengine connection is closed."));
+        return new RestfulStatement(this, this.database);
+    }
+
+    @Override
+    public PreparedStatement prepareStatement(String sql) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public CallableStatement prepareCall(String sql) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String nativeSQL(String sql) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void setAutoCommit(boolean autoCommit) throws SQLException {
+
+    }
+
+    @Override
+    public boolean getAutoCommit() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public void commit() throws SQLException {
+
+    }
+
+    @Override
+    public void rollback() throws SQLException {
+
+    }
+
+    @Override
+    public void close() throws SQLException {
+
+    }
+
+    @Override
+    public boolean isClosed() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public DatabaseMetaData getMetaData() throws SQLException {
+        //TODO: RestfulDatabaseMetaData is not implemented
+        return new RestfulDatabaseMetaData();
+    }
+
+    @Override
+    public void setReadOnly(boolean readOnly) throws SQLException {
+
+    }
+
+    @Override
+    public boolean isReadOnly() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public void setCatalog(String catalog) throws SQLException {
+
+    }
+
+    @Override
+    public String getCatalog() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void setTransactionIsolation(int level) throws SQLException {
+
+    }
+
+    @Override
+    public int getTransactionIsolation() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public SQLWarning getWarnings() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void clearWarnings() throws SQLException {
+
+    }
+
+    @Override
+    public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Map<String, Class<?>> getTypeMap() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void setTypeMap(Map<String, Class<?>> map) throws SQLException {
+
+    }
+
+    @Override
+    public void setHoldability(int holdability) throws SQLException {
+
+    }
+
+    @Override
+    public int getHoldability() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public Savepoint setSavepoint() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Savepoint setSavepoint(String name) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void rollback(Savepoint savepoint) throws SQLException {
+
+    }
+
+    @Override
+    public void releaseSavepoint(Savepoint savepoint) throws SQLException {
+
+    }
+
+    @Override
+    public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Clob createClob() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Blob createBlob() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public NClob createNClob() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public SQLXML createSQLXML() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean isValid(int timeout) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public void setClientInfo(String name, String value) throws SQLClientInfoException {
+
+    }
+
+    @Override
+    public void setClientInfo(Properties properties) throws SQLClientInfoException {
+
+    }
+
+    @Override
+    public String getClientInfo(String name) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Properties getClientInfo() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Array createArrayOf(String typeName, Object[] elements) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Struct createStruct(String typeName, Object[] attributes) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void setSchema(String schema) throws SQLException {
+
+    }
+
+    @Override
+    public String getSchema() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void abort(Executor executor) throws SQLException {
+
+    }
+
+    @Override
+    public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException {
+
+    }
+
+    @Override
+    public int getNetworkTimeout() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public <T> T unwrap(Class<T> iface) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean isWrapperFor(Class<?> iface) throws SQLException {
+        return false;
+    }
+
+    public String getHost() {
+        return host;
+    }
+
+    public int getPort() {
+        return port;
+    }
+
+    public Properties getProps() {
+        return props;
+    }
+
+    public String getDatabase() {
+        return database;
+    }
+
+    public String getUrl() {
+        return url;
+    }
+}

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulDatabaseMetaData.java

@@ -0,0 +1,886 @@
+package com.taosdata.jdbc.rs;
+
+import java.sql.*;
+
+public class RestfulDatabaseMetaData implements DatabaseMetaData {
+
+    @Override
+    public boolean allProceduresAreCallable() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean allTablesAreSelectable() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public String getURL() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getUserName() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean isReadOnly() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean nullsAreSortedHigh() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean nullsAreSortedLow() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean nullsAreSortedAtStart() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean nullsAreSortedAtEnd() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public String getDatabaseProductName() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getDatabaseProductVersion() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getDriverName() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getDriverVersion() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public int getDriverMajorVersion() {
+        return 0;
+    }
+
+    @Override
+    public int getDriverMinorVersion() {
+        return 0;
+    }
+
+    @Override
+    public boolean usesLocalFiles() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean usesLocalFilePerTable() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsMixedCaseIdentifiers() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean storesUpperCaseIdentifiers() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean storesLowerCaseIdentifiers() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean storesMixedCaseIdentifiers() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsMixedCaseQuotedIdentifiers() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean storesUpperCaseQuotedIdentifiers() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean storesLowerCaseQuotedIdentifiers() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean storesMixedCaseQuotedIdentifiers() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public String getIdentifierQuoteString() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getSQLKeywords() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getNumericFunctions() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getStringFunctions() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getSystemFunctions() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getTimeDateFunctions() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getSearchStringEscape() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getExtraNameCharacters() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean supportsAlterTableWithAddColumn() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsAlterTableWithDropColumn() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsColumnAliasing() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean nullPlusNonNullIsNull() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsConvert() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsConvert(int fromType, int toType) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsTableCorrelationNames() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsDifferentTableCorrelationNames() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsExpressionsInOrderBy() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsOrderByUnrelated() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsGroupBy() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsGroupByUnrelated() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsGroupByBeyondSelect() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsLikeEscapeClause() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsMultipleResultSets() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsMultipleTransactions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsNonNullableColumns() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsMinimumSQLGrammar() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsCoreSQLGrammar() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsExtendedSQLGrammar() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsANSI92EntryLevelSQL() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsANSI92IntermediateSQL() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsANSI92FullSQL() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsIntegrityEnhancementFacility() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsOuterJoins() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsFullOuterJoins() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsLimitedOuterJoins() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public String getSchemaTerm() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getProcedureTerm() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getCatalogTerm() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean isCatalogAtStart() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public String getCatalogSeparator() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean supportsSchemasInDataManipulation() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSchemasInProcedureCalls() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSchemasInTableDefinitions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSchemasInIndexDefinitions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSchemasInPrivilegeDefinitions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsCatalogsInDataManipulation() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsCatalogsInProcedureCalls() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsCatalogsInTableDefinitions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsCatalogsInIndexDefinitions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsCatalogsInPrivilegeDefinitions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsPositionedDelete() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsPositionedUpdate() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSelectForUpdate() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsStoredProcedures() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSubqueriesInComparisons() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSubqueriesInExists() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSubqueriesInIns() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSubqueriesInQuantifieds() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsCorrelatedSubqueries() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsUnion() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsUnionAll() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsOpenCursorsAcrossCommit() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsOpenCursorsAcrossRollback() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsOpenStatementsAcrossCommit() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsOpenStatementsAcrossRollback() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public int getMaxBinaryLiteralLength() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxCharLiteralLength() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxColumnNameLength() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxColumnsInGroupBy() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxColumnsInIndex() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxColumnsInOrderBy() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxColumnsInSelect() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxColumnsInTable() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxConnections() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxCursorNameLength() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxIndexLength() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxSchemaNameLength() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxProcedureNameLength() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxCatalogNameLength() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxRowSize() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public boolean doesMaxRowSizeIncludeBlobs() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public int getMaxStatementLength() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxStatements() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxTableNameLength() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxTablesInSelect() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getMaxUserNameLength() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getDefaultTransactionIsolation() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public boolean supportsTransactions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsTransactionIsolationLevel(int level) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsDataManipulationTransactionsOnly() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean dataDefinitionCausesTransactionCommit() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean dataDefinitionIgnoredInTransactions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public ResultSet getProcedures(String catalog, String schemaPattern, String procedureNamePattern) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getProcedureColumns(String catalog, String schemaPattern, String procedureNamePattern, String columnNamePattern) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getSchemas() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getCatalogs() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getTableTypes() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getColumnPrivileges(String catalog, String schema, String table, String columnNamePattern) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getBestRowIdentifier(String catalog, String schema, String table, int scope, boolean nullable) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getVersionColumns(String catalog, String schema, String table) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getImportedKeys(String catalog, String schema, String table) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getExportedKeys(String catalog, String schema, String table) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getCrossReference(String parentCatalog, String parentSchema, String parentTable, String foreignCatalog, String foreignSchema, String foreignTable) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getTypeInfo() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getIndexInfo(String catalog, String schema, String table, boolean unique, boolean approximate) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean supportsResultSetType(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsResultSetConcurrency(int type, int concurrency) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean ownUpdatesAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean ownDeletesAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean ownInsertsAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean othersUpdatesAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean othersDeletesAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean othersInsertsAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean updatesAreDetected(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean deletesAreDetected(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean insertsAreDetected(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsBatchUpdates() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public ResultSet getUDTs(String catalog, String schemaPattern, String typeNamePattern, int[] types) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Connection getConnection() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean supportsSavepoints() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsNamedParameters() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsMultipleOpenResults() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsGetGeneratedKeys() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public ResultSet getSuperTypes(String catalog, String schemaPattern, String typeNamePattern) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getAttributes(String catalog, String schemaPattern, String typeNamePattern, String attributeNamePattern) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean supportsResultSetHoldability(int holdability) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public int getResultSetHoldability() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getDatabaseMajorVersion() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getDatabaseMinorVersion() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getJDBCMajorVersion() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getJDBCMinorVersion() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getSQLStateType() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public boolean locatorsUpdateCopy() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsStatementPooling() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public RowIdLifetime getRowIdLifetime() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getSchemas(String catalog, String schemaPattern) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean supportsStoredFunctionsUsingCallSyntax() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean autoCommitFailureClosesAllResultSets() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public ResultSet getClientInfoProperties() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getFunctions(String catalog, String schemaPattern, String functionNamePattern) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getFunctionColumns(String catalog, String schemaPattern, String functionNamePattern, String columnNamePattern) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public ResultSet getPseudoColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean generatedKeyAlwaysReturned() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public <T> T unwrap(Class<T> iface) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean isWrapperFor(Class<?> iface) throws SQLException {
+        return false;
+    }
+}

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulDriver.java

@@ -0,0 +1,91 @@
+package com.taosdata.jdbc.rs;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONObject;
+import com.taosdata.jdbc.AbstractTaosDriver;
+import com.taosdata.jdbc.TSDBConstants;
+import com.taosdata.jdbc.TSDBDriver;
+import com.taosdata.jdbc.rs.util.HttpClientPoolUtil;
+
+import java.sql.*;
+import java.util.Properties;
+import java.util.logging.Logger;
+
+public class RestfulDriver extends AbstractTaosDriver {
+
+    private static final String URL_PREFIX = "jdbc:TAOS-RS://";
+
+    static {
+        try {
+            DriverManager.registerDriver(new RestfulDriver());
+        } catch (SQLException e) {
+            throw new RuntimeException(TSDBConstants.WrapErrMsg("can not register Restful JDBC driver"), e);
+        }
+    }
+
+    @Override
+    public Connection connect(String url, Properties info) throws SQLException {
+        // throw SQLException if url is null
+        if (url == null)
+            throw new SQLException(TSDBConstants.WrapErrMsg("url is not set!"));
+        // return null if url is not be accepted
+        if (!acceptsURL(url))
+            return null;
+
+        Properties props = parseURL(url, info);
+        String host = props.getProperty(TSDBDriver.PROPERTY_KEY_HOST, "localhost");
+        String port = props.getProperty(TSDBDriver.PROPERTY_KEY_PORT, "6041");
+        String database = props.getProperty(TSDBDriver.PROPERTY_KEY_DBNAME);
+
+        String loginUrl = "http://" + props.getProperty(TSDBDriver.PROPERTY_KEY_HOST) + ":"
+                + props.getProperty(TSDBDriver.PROPERTY_KEY_PORT) + "/rest/login/"
+                + props.getProperty(TSDBDriver.PROPERTY_KEY_USER) + "/"
+                + props.getProperty(TSDBDriver.PROPERTY_KEY_PASSWORD) + "";
+        String result = HttpClientPoolUtil.execute(loginUrl);
+        JSONObject jsonResult = JSON.parseObject(result);
+        String status = jsonResult.getString("status");
+        if (!status.equals("succ")) {
+            throw new SQLException(jsonResult.getString("desc"));
+        }
+
+        return new RestfulConnection(host, port, props, database, url);
+    }
+
+    @Override
+    public boolean acceptsURL(String url) throws SQLException {
+        if (url == null)
+            throw new SQLException(TSDBConstants.WrapErrMsg("url is null"));
+        return (url != null && url.length() > 0 && url.trim().length() > 0) && url.startsWith(URL_PREFIX);
+    }
+
+    @Override
+    public DriverPropertyInfo[] getPropertyInfo(String url, Properties info) throws SQLException {
+        if (info == null) {
+            info = new Properties();
+        }
+        if (acceptsURL(url)) {
+            info = parseURL(url, info);
+        }
+        return getPropertyInfo(info);
+    }
+
+    @Override
+    public int getMajorVersion() {
+        return 2;
+    }
+
+    @Override
+    public int getMinorVersion() {
+        return 0;
+    }
+
+    @Override
+    public boolean jdbcCompliant() {
+        return false;
+    }
+
+    @Override
+    public Logger getParentLogger() throws SQLFeatureNotSupportedException {
+        return null;
+    }
+}

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulResultSetMetaData.java

@@ -0,0 +1,129 @@
+package com.taosdata.jdbc.rs;
+
+import java.sql.ResultSetMetaData;
+import java.sql.SQLException;
+import java.util.List;
+
+public class RestfulResultSetMetaData implements ResultSetMetaData {
+
+    private List<String> fields;
+
+    public RestfulResultSetMetaData(List<String> fields) {
+        this.fields = fields;
+    }
+
+    @Override
+    public int getColumnCount() throws SQLException {
+        return fields.size();
+    }
+
+    @Override
+    public boolean isAutoIncrement(int column) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean isCaseSensitive(int column) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean isSearchable(int column) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean isCurrency(int column) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public int isNullable(int column) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public boolean isSigned(int column) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public int getColumnDisplaySize(int column) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public String getColumnLabel(int column) throws SQLException {
+        return fields.get(column - 1);
+    }
+
+    @Override
+    public String getColumnName(int column) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getSchemaName(int column) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public int getPrecision(int column) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getScale(int column) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public String getTableName(int column) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public String getCatalogName(int column) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public int getColumnType(int column) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public String getColumnTypeName(int column) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean isReadOnly(int column) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean isWritable(int column) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean isDefinitelyWritable(int column) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public String getColumnClassName(int column) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public <T> T unwrap(Class<T> iface) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean isWrapperFor(Class<?> iface) throws SQLException {
+        return false;
+    }
+}

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/RestfulStatement.java

@@ -0,0 +1,280 @@
+package com.taosdata.jdbc.rs;
+
+import com.alibaba.fastjson.JSON;
+import com.alibaba.fastjson.JSONObject;
+import com.taosdata.jdbc.TSDBConstants;
+import com.taosdata.jdbc.rs.util.HttpClientPoolUtil;
+
+import java.sql.*;
+import java.util.Arrays;
+import java.util.List;
+
+public class RestfulStatement implements Statement {
+
+    private final String catalog;
+    private final RestfulConnection conn;
+
+    public RestfulStatement(RestfulConnection c, String catalog) {
+        this.conn = c;
+        this.catalog = catalog;
+    }
+
+    @Override
+    public ResultSet executeQuery(String sql) throws SQLException {
+
+        final String url = "http://" + conn.getHost() + ":"+conn.getPort()+"/rest/sql";
+
+        String result = HttpClientPoolUtil.execute(url, sql);
+        String fields = "";
+        List<String> words = Arrays.asList(sql.split(" "));
+        if (words.get(0).equalsIgnoreCase("select")) {
+            int index = 0;
+            if (words.contains("from")) {
+                index = words.indexOf("from");
+            }
+            if (words.contains("FROM")) {
+                index = words.indexOf("FROM");
+            }
+            fields = HttpClientPoolUtil.execute(url, "DESCRIBE " + words.get(index + 1));
+        }
+
+        JSONObject jsonObject = JSON.parseObject(result);
+        if (jsonObject.getString("status").equals("error")) {
+            throw new SQLException(TSDBConstants.WrapErrMsg("SQL execution error: " +
+                    jsonObject.getString("desc") + "\n" +
+                    "error code: " + jsonObject.getString("code")));
+        }
+        String dataStr = jsonObject.getString("data");
+        if ("use".equalsIgnoreCase(fields.split(" ")[0])) {
+            return new RestfulResultSet(dataStr, "");
+        }
+
+        JSONObject jsonField = JSON.parseObject(fields);
+        if (jsonField == null) {
+            return new RestfulResultSet(dataStr, "");
+        }
+        if (jsonField.getString("status").equals("error")) {
+            throw new SQLException(TSDBConstants.WrapErrMsg("SQL execution error: " +
+                    jsonField.getString("desc") + "\n" +
+                    "error code: " + jsonField.getString("code")));
+        }
+        String fieldData = jsonField.getString("data");
+
+        return new RestfulResultSet(dataStr, fieldData);
+    }
+
+    @Override
+    public int executeUpdate(String sql) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public void close() throws SQLException {
+
+    }
+
+    @Override
+    public int getMaxFieldSize() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public void setMaxFieldSize(int max) throws SQLException {
+
+    }
+
+    @Override
+    public int getMaxRows() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public void setMaxRows(int max) throws SQLException {
+
+    }
+
+    @Override
+    public void setEscapeProcessing(boolean enable) throws SQLException {
+
+    }
+
+    @Override
+    public int getQueryTimeout() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public void setQueryTimeout(int seconds) throws SQLException {
+
+    }
+
+    @Override
+    public void cancel() throws SQLException {
+
+    }
+
+    @Override
+    public SQLWarning getWarnings() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public void clearWarnings() throws SQLException {
+
+    }
+
+    @Override
+    public void setCursorName(String name) throws SQLException {
+
+    }
+
+    @Override
+    public boolean execute(String sql) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public ResultSet getResultSet() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public int getUpdateCount() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public boolean getMoreResults() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public void setFetchDirection(int direction) throws SQLException {
+
+    }
+
+    @Override
+    public int getFetchDirection() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public void setFetchSize(int rows) throws SQLException {
+
+    }
+
+    @Override
+    public int getFetchSize() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getResultSetConcurrency() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getResultSetType() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public void addBatch(String sql) throws SQLException {
+
+    }
+
+    @Override
+    public void clearBatch() throws SQLException {
+
+    }
+
+    @Override
+    public int[] executeBatch() throws SQLException {
+        return new int[0];
+    }
+
+    @Override
+    public Connection getConnection() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean getMoreResults(int current) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public ResultSet getGeneratedKeys() throws SQLException {
+        return null;
+    }
+
+    @Override
+    public int executeUpdate(String sql, int autoGeneratedKeys) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int executeUpdate(String sql, int[] columnIndexes) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int executeUpdate(String sql, String[] columnNames) throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public boolean execute(String sql, int autoGeneratedKeys) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean execute(String sql, int[] columnIndexes) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean execute(String sql, String[] columnNames) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public int getResultSetHoldability() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public boolean isClosed() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public void setPoolable(boolean poolable) throws SQLException {
+
+    }
+
+    @Override
+    public boolean isPoolable() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public void closeOnCompletion() throws SQLException {
+
+    }
+
+    @Override
+    public boolean isCloseOnCompletion() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public <T> T unwrap(Class<T> iface) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public boolean isWrapperFor(Class<?> iface) throws SQLException {
+        return false;
+    }
+}

src/connector/jdbc/src/main/java/com/taosdata/jdbc/rs/util/HttpClientPoolUtil.java

@@ -0,0 +1,222 @@
+package com.taosdata.jdbc.rs.util;
+
+import org.apache.commons.lang3.StringUtils;
+import org.apache.http.HeaderElement;
+import org.apache.http.HeaderElementIterator;
+import org.apache.http.HttpEntity;
+import org.apache.http.client.config.RequestConfig;
+import org.apache.http.client.methods.*;
+import org.apache.http.client.protocol.HttpClientContext;
+import org.apache.http.conn.ConnectionKeepAliveStrategy;
+import org.apache.http.entity.StringEntity;
+import org.apache.http.impl.client.CloseableHttpClient;
+import org.apache.http.impl.client.HttpClients;
+import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
+import org.apache.http.message.BasicHeaderElementIterator;
+import org.apache.http.protocol.HTTP;
+import org.apache.http.protocol.HttpContext;
+import org.apache.http.util.EntityUtils;
+
+
+public class HttpClientPoolUtil {
+    public static PoolingHttpClientConnectionManager cm = null;
+    public static CloseableHttpClient httpClient = null;
+    /**
+     * 默认content 类型
+     */
+    private static final String DEFAULT_CONTENT_TYPE = "application/json";
+    /**
+     * 默认请求超时时间30s
+     */
+    private static final int DEFAULT_TIME_OUT = 15000;
+    private static final int count = 32;
+    private static final int totalCount = 1000;
+    private static final int Http_Default_Keep_Time = 15000;
+
+    /**
+     * 初始化连接池
+     */
+    public static synchronized void initPools() {
+        if (httpClient == null) {
+            cm = new PoolingHttpClientConnectionManager();
+            cm.setDefaultMaxPerRoute(count);
+            cm.setMaxTotal(totalCount);
+            httpClient = HttpClients.custom().setKeepAliveStrategy(defaultStrategy).setConnectionManager(cm).build();
+        }
+    }
+
+    /**
+     * Http connection keepAlive 设置
+     */
+    public static ConnectionKeepAliveStrategy defaultStrategy = (response, context) -> {
+        HeaderElementIterator it = new BasicHeaderElementIterator(response.headerIterator(HTTP.CONN_KEEP_ALIVE));
+        int keepTime = Http_Default_Keep_Time * 1000;
+        while (it.hasNext()) {
+            HeaderElement headerElement = it.nextElement();
+            String param = headerElement.getName();
+            String value = headerElement.getValue();
+            if (value != null && param.equalsIgnoreCase("timeout")) {
+                try {
+                    return Long.parseLong(value) * 1000;
+                } catch (Exception e) {
+                    new Exception(
+                            "format KeepAlive timeout exception, exception:" + e.toString())
+                            .printStackTrace();
+                }
+            }
+        }
+        return keepTime;
+    };
+
+    public static CloseableHttpClient getHttpClient() {
+        return httpClient;
+    }
+
+    public static PoolingHttpClientConnectionManager getHttpConnectionManager() {
+        return cm;
+    }
+
+    /**
+     * 执行http post请求
+     * 默认采用Content-Type：application/json，Accept：application/json
+     *
+     * @param uri  请求地址
+     * @param data 请求数据
+     * @return responseBody
+     */
+    public static String execute(String uri, String data) {
+        long startTime = System.currentTimeMillis();
+        HttpEntity httpEntity = null;
+        HttpEntityEnclosingRequestBase method = null;
+        String responseBody = "";
+        try {
+            if (httpClient == null) {
+                initPools();
+            }
+            method = (HttpEntityEnclosingRequestBase) getRequest(uri, HttpPost.METHOD_NAME, DEFAULT_CONTENT_TYPE, 0);
+            method.setEntity(new StringEntity(data));
+            HttpContext context = HttpClientContext.create();
+            CloseableHttpResponse httpResponse = httpClient.execute(method, context);
+            httpEntity = httpResponse.getEntity();
+            if (httpEntity != null) {
+                responseBody = EntityUtils.toString(httpEntity, "UTF-8");
+            }
+        } catch (Exception e) {
+            if (method != null) {
+                method.abort();
+            }
+//            e.printStackTrace();
+//            logger.error("execute post request exception, url:" + uri + ", exception:" + e.toString()
+//                    + ", cost time(ms):" + (System.currentTimeMillis() - startTime));
+            new Exception("execute post request exception, url:"
+                    + uri + ", exception:" + e.toString() +
+                    ", cost time(ms):" + (System.currentTimeMillis() - startTime))
+                    .printStackTrace();
+        } finally {
+            if (httpEntity != null) {
+                try {
+                    EntityUtils.consumeQuietly(httpEntity);
+                } catch (Exception e) {
+//                    e.printStackTrace();
+//                    logger.error("close response exception, url:" + uri + ", exception:" + e.toString()
+//                            + ", cost time(ms):" + (System.currentTimeMillis() - startTime));
+                    new Exception(
+                            "close response exception, url:" + uri +
+                                    ", exception:" + e.toString()
+                                    + ", cost time(ms):" + (System.currentTimeMillis() - startTime))
+                            .printStackTrace();
+                }
+            }
+        }
+        return responseBody;
+    }
+
+    /**
+     * * 创建请求
+     *
+     * @param uri         请求url
+     * @param methodName  请求的方法类型
+     * @param contentType contentType类型
+     * @param timeout     超时时间
+     * @return HttpRequestBase    返回类型
+     * @author lisc
+     */
+    public static HttpRequestBase getRequest(String uri, String methodName, String contentType, int timeout) {
+        if (httpClient == null) {
+            initPools();
+        }
+        HttpRequestBase method;
+        if (timeout <= 0) {
+            timeout = DEFAULT_TIME_OUT;
+        }
+        RequestConfig requestConfig = RequestConfig.custom().setSocketTimeout(timeout * 1000)
+                .setConnectTimeout(timeout * 1000).setConnectionRequestTimeout(timeout * 1000)
+                .setExpectContinueEnabled(false).build();
+        if (HttpPut.METHOD_NAME.equalsIgnoreCase(methodName)) {
+            method = new HttpPut(uri);
+        } else if (HttpPost.METHOD_NAME.equalsIgnoreCase(methodName)) {
+            method = new HttpPost(uri);
+        } else if (HttpGet.METHOD_NAME.equalsIgnoreCase(methodName)) {
+            method = new HttpGet(uri);
+        } else {
+            method = new HttpPost(uri);
+        }
+
+        if (StringUtils.isBlank(contentType)) {
+            contentType = DEFAULT_CONTENT_TYPE;
+        }
+        method.addHeader("Content-Type", contentType);
+        method.addHeader("Accept", contentType);
+        method.setConfig(requestConfig);
+        return method;
+    }
+
+    /**
+     * 执行GET 请求
+     *
+     * @param uri 网址
+     * @return responseBody
+     */
+    public static String execute(String uri) {
+        long startTime = System.currentTimeMillis();
+        HttpEntity httpEntity = null;
+        HttpRequestBase method = null;
+        String responseBody = "";
+        try {
+            if (httpClient == null) {
+                initPools();
+            }
+            method = getRequest(uri, HttpGet.METHOD_NAME, DEFAULT_CONTENT_TYPE, 0);
+            HttpContext context = HttpClientContext.create();
+            CloseableHttpResponse httpResponse = httpClient.execute(method, context);
+            httpEntity = httpResponse.getEntity();
+            if (httpEntity != null) {
+                responseBody = EntityUtils.toString(httpEntity, "UTF-8");
+//                logger.info("请求URL: " + uri + "+ 返回状态码：" + httpResponse.getStatusLine().getStatusCode());
+            }
+        } catch (Exception e) {
+            if (method != null) {
+                method.abort();
+            }
+            e.printStackTrace();
+//            logger.error("execute get request exception, url:" + uri + ", exception:" + e.toString() + ",cost time(ms):"
+//                    + (System.currentTimeMillis() - startTime));
+            System.out.println("log:调用 HttpClientPoolUtil execute get request exception, url:" + uri + ", exception:" + e.toString() + ",cost time(ms):"
+                    + (System.currentTimeMillis() - startTime));
+        } finally {
+            if (httpEntity != null) {
+                try {
+                    EntityUtils.consumeQuietly(httpEntity);
+                } catch (Exception e) {
+//                    e.printStackTrace();
+//                    logger.error("close response exception, url:" + uri + ", exception:" + e.toString()
+//                            + ",cost time(ms):" + (System.currentTimeMillis() - startTime));
+                    new Exception("close response exception, url:" + uri + ", exception:" + e.toString()
+                            + ",cost time(ms):" + (System.currentTimeMillis() - startTime))
+                            .printStackTrace();
+                }
+            }
+        }
+        return responseBody;
+    }
+}

src/connector/jdbc/src/test/java/com/taosdata/jdbc/rs/RestfulDriverTest.java

@@ -0,0 +1,40 @@
+package com.taosdata.jdbc.rs;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.sql.*;
+
+public class RestfulDriverTest {
+
+    @Test
+    public void testCase001() {
+        try {
+            Class.forName("com.taosdata.jdbc.rs.RestfulDriver");
+            Connection connection = DriverManager.getConnection("jdbc:TAOS-RS://master:6041/?user=root&password=taosdata");
+            Statement statement = connection.createStatement();
+            ResultSet resultSet = statement.executeQuery("select * from log.log");
+            ResultSetMetaData metaData = resultSet.getMetaData();
+            while (resultSet.next()) {
+                for (int i = 1; i <= metaData.getColumnCount(); i++) {
+                    String column = metaData.getColumnLabel(i);
+                    String value = resultSet.getString(i);
+                    System.out.print(column + ":" + value + "\t");
+                }
+                System.out.println();
+            }
+            statement.close();
+            connection.close();
+        } catch (SQLException | ClassNotFoundException e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Test
+    public void testAcceptUrl() throws SQLException {
+        Driver driver = new RestfulDriver();
+        boolean isAccept = driver.acceptsURL("jdbc:TAOS-RS://master:6041");
+        Assert.assertTrue(isAccept);
+    }
+
+}

src/plugins/monitor/src/monitorMain.c

@@ -148,10 +148,12 @@ static void *monitorThreadFunc(void *param) {
     }
 
     if (tsMonitor.state == MON_STATE_NOT_INIT) {
+      int code = 0;
+
       for (; tsMonitor.cmdIndex < MON_CMD_MAX; ++tsMonitor.cmdIndex) {
         monitorBuildMonitorSql(tsMonitor.sql, tsMonitor.cmdIndex);
         void *res = taos_query(tsMonitor.conn, tsMonitor.sql);
-        int   code = taos_errno(res);
+        code = taos_errno(res);
         taos_free_result(res);
 
         if (code != 0) {
@@ -162,7 +164,7 @@ static void *monitorThreadFunc(void *param) {
         }
       }
 
-      if (tsMonitor.start) {
+      if (tsMonitor.start && code == 0) {
         tsMonitor.state = MON_STATE_INITED;
       }
     }

src/query/src/qFill.c

@@ -332,7 +332,7 @@ static void doFillOneRowResult(SFillInfo* pFillInfo, tFilePage** data, char** sr
 
         point1 = (SPoint){.key = *(TSKEY*)(prev), .val = prev + pCol->col.offset};
         point2 = (SPoint){.key = ts, .val = srcData[i] + pFillInfo->index * bytes};
-        point  = (SPoint){.key = pFillInfo->start, .val = val1};
+        point  = (SPoint){.key = pFillInfo->currentKey, .val = val1};
         taosGetLinearInterpolationVal(type, &point1, &point2, &point);
       }
     } else {

src/sync/inc/syncInt.h

@@ -106,7 +106,7 @@ typedef struct {
   int8_t    nacks;
   int8_t    confirmed;
   int32_t   code;
-  uint64_t  time;
+  int64_t   time;
 } SFwdInfo;
 
 typedef struct {

src/sync/src/syncMain.c

@@ -1204,14 +1204,17 @@ static void syncMonitorFwdInfos(void *param, void *tmrId) {
 
   SSyncFwds *pSyncFwds = pNode->pSyncFwds;
 
-  if (pSyncFwds) {;
+  if (pSyncFwds) {
-    uint64_t   time = taosGetTimestampMs();
+    int64_t time = taosGetTimestampMs();
 
     if (pSyncFwds->fwds > 0) {
       pthread_mutex_lock(&(pNode->mutex));
       for (int32_t i = 0; i < pSyncFwds->fwds; ++i) {
         SFwdInfo *pFwdInfo = pSyncFwds->fwdInfo + (pSyncFwds->first + i) % tsMaxFwdInfo;
-        if (time - pFwdInfo->time < 2000) break;
+        if (ABS(time - pFwdInfo->time) < 2000) break;
+
+        sDebug("vgId:%d, forward info expired, hver:%" PRIu64 " curtime:%" PRIu64 " savetime:%" PRIu64, pNode->vgId,
+               pFwdInfo->version, time, pFwdInfo->time);
         syncProcessFwdAck(pNode, pFwdInfo, TSDB_CODE_RPC_NETWORK_UNAVAIL);
       }
 

tests/pytest/query/queryFillTest.py

@@ -31,35 +31,33 @@ class TDTestCase:
         print("==============step1")
         tdSql.execute(
             "create table if not exists stb (ts timestamp, col1 int, col2 int, col3 int) tags(loc nchar(20), id int)")
-        tdSql.execute(
+                
-            "insert into tb0 using stb tags('beijing', 1) values(%s, 1, 1, 1)(%s, 2, 2, 2)(%s, 3, 3, 3)(%s, 4, 4, 4)" % (self.ts, self.ts + 1000000, self.ts + 2000000, self.ts + 3000000))
+        currTs = self.ts
-        tdSql.execute(
-            "insert into tb1 using stb tags('beijing', 2) values(%s, 1, 1, 1)(%s, 2, 2, 2)(%s, 3, 3, 3)(%s, 4, 4, 4)" % (self.ts + 4000000, self.ts + 5000000, self.ts + 6000000, self.ts + 7000000))
-        tdSql.execute(
-            "insert into tb2 using stb tags('shanghai', 1) values(%s, 1, 1, 1)(%s, 2, 2, 2)(%s, 3, 3, 3)(%s, 4, 4, 4)" % (self.ts + 8000000, self.ts + 9000000, self.ts + 10000000, self.ts + 11000000))
-        tdSql.execute(
-            "insert into tb3 using stb tags('shanghai', 2) values(%s, 1, 1, 1)(%s, 2, 2, 2)(%s, 3, 3, 3)(%s, 4, 4, 4)" % (self.ts + 12000000, self.ts + 13000000, self.ts + 14000000, self.ts + 15000000))
-        tdSql.execute(
-            "insert into tb4 using stb tags('shanghai', 3) values(%s, null, null, null)(%s, null, null, null)(%s, null, null, null)(%s, null, null, null)" % (self.ts + 16000000, self.ts + 17000000, self.ts + 18000000, self.ts + 19000000))
-        
-        tdSql.query("select first(col1) - avg(col1) from stb where ts > '2018-09-17 08:00:00.000' and ts < '2018-09-17 14:16:41.000' interval(1h)")
-        tdSql.checkRows(5)
-        tdSql.checkData(0, 1, -1.5)
-        tdSql.checkData(1, 1, -1.5)
-        tdSql.checkData(2, 1, -1.0)
-        tdSql.checkData(3, 1, 1.5)
-        tdSql.checkData(4, 1, 0)
 
-        tdSql.query("select first(col1) - avg(col1) from stb where ts > '2018-09-17 08:00:00.000' and ts < '2018-09-17 14:16:41.000' interval(1h) fill(null)")
+        for i in range(100):
-        tdSql.checkRows(7)
+            sql = "create table tb%d using stb tags('city%d', 1)" % (i, i)
+            tdSql.execute(sql)
+
+            sql = "insert into tb%d values" % i            
+            for j in range(5):
+                val = 1 + j
+                sql += "(%d, %d, %d, %d)" % (currTs, val, val, val)
+                currTs += 1000000
+            tdSql.execute(sql)    
+
+        tdSql.query("select first(col1) - avg(col1) from stb where ts > '2018-09-17 08:00:00.000' and ts < '2018-09-23 04:36:40.000' interval(1h)")
+        tdSql.checkRows(139)        
+
+        tdSql.query("select first(col1) - avg(col1) from stb where ts > '2018-09-17 08:00:00.000' and ts < '2018-09-23 04:36:40.000' interval(1h) fill(null)")
+        tdSql.checkRows(141)
         tdSql.checkData(0, 1, None)
-        tdSql.checkData(6, 1, None)       
+        tdSql.checkData(140, 1, None)       
 
-        tdSql.query("select max(col1) - min(col1) from stb where ts > '2018-09-17 08:00:00.000' and ts < '2018-09-17 14:16:41.000' and id = 1 group by loc, id")
+        tdSql.query("select max(col1) - min(col1) from stb where ts > '2018-09-17 08:00:00.000' and ts < '2018-09-23 04:36:40.000' and id = 1 group by loc, id")
-        tdSql.checkRows(2)
+        rows = tdSql.queryRows
 
-        tdSql.query("select spread(col1) from stb where ts > '2018-09-17 08:00:00.000' and ts < '2018-09-17 14:16:41.000' and id = 1 group by loc, id")
+        tdSql.query("select spread(col1) from stb where ts > '2018-09-17 08:00:00.000' and ts < '2018-09-23 04:36:40.000' and id = 1 group by loc, id")
-        tdSql.checkRows(2)
+        tdSql.checkRows(rows)
         
     def stop(self):
         tdSql.close()

tests/script/general/parser/join_multivnode.sim

@@ -136,9 +136,8 @@ sql select join_mt0.ts, join_mt1.t1, join_mt0.t1, join_mt1.tbname, join_mt0.tbna
 #1970-01-01 08:01:40.790 |                    10 |             945.000000000 |        90 |     true |      true |           0 |
 sql_error select count(join_mt0.c1), sum(join_mt1.c2), first(join_mt0.c5), last(join_mt1.c7), first(join_mt1.c7) from join_mt0, join_mt1 where join_mt0.t1=join_mt1.t1 and join_mt0.ts=join_mt1.ts interval(10a) group by join_mt0.t1 order by join_mt0.ts desc limit 20 offset 19;
 
-
 sql select count(join_mt0.c1), sum(join_mt0.c2)/count(*), avg(c2), first(join_mt0.c5), last(c7) from join_mt0  interval(10a) group by join_mt0.t1 order by join_mt0.ts desc;
-if $rows != 100 then
+if $rows != 300 then
   return -1
 endi
 
@@ -147,7 +146,7 @@ if $data00 != @70-01-01 08:01:40.990@ then
   return -1
 endi
 
-if $data01 != 30 then
+if $data01 != 10 then
   return -1
 endi
 
@@ -168,7 +167,7 @@ if $data05 != 1 then
   return -1
 endi
 
-if $data06 != 2 then
+if $data06 != 0 then
   return -1
 endi
 
@@ -177,7 +176,7 @@ if $data10 != @70-01-01 08:01:40.980@ then
   return -1
 endi
 
-if $data11 != 30 then
+if $data11 != 10 then
   return -1
 endi
 
@@ -198,7 +197,7 @@ if $data15 != 1 then
   return -1
 endi
 
-if $data16 != 2 then
+if $data16 != 0 then
   return -1
 endi
 

tests/script/jenkins/basic.txt

@@ -277,6 +277,8 @@ cd ../../../debug; make
 ./test.sh -f unique/db/replica_part.sim
 
 ./test.sh -f unique/dnode/alternativeRole.sim
+./test.sh -f unique/dnode/monitor.sim
+./test.sh -f unique/dnode/monitor_bug.sim
 ./test.sh -f unique/dnode/simple.sim
 ./test.sh -f unique/dnode/balance1.sim
 ./test.sh -f unique/dnode/balance2.sim

tests/script/unique/dnode/monitor.sim

@@ -0,0 +1,92 @@
+system sh/stop_dnodes.sh
+
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+
+system sh/cfg.sh -n dnode1 -c role -v 1
+system sh/cfg.sh -n dnode2 -c role -v 2
+
+system sh/cfg.sh -n dnode1 -c wallevel -v 1
+system sh/cfg.sh -n dnode2 -c wallevel -v 1
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 3
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 3
+
+system sh/cfg.sh -n dnode1 -c minTablesPerVnode -v 10
+system sh/cfg.sh -n dnode2 -c minTablesPerVnode -v 10
+system sh/cfg.sh -n dnode1 -c maxTablesPerVnode -v 10
+system sh/cfg.sh -n dnode2 -c maxTablesPerVnode -v 10
+
+system sh/cfg.sh -n dnode1 -c monitor -v 1
+system sh/cfg.sh -n dnode2 -c monitor -v 1
+
+print ========== step1
+system sh/exec.sh -n dnode1 -s start
+sql connect
+sleep 5000
+
+sql show dnodes
+print dnode1 openVnodes $data3_1
+if $data2_1 != 0 then
+	return -1
+endi
+
+print ========== step2
+sql create dnode $hostname2
+system sh/exec.sh -n dnode2 -s start
+
+sleep 10000
+sql show dnodes
+print dnode1 openVnodes $data2_1
+print dnode2 openVnodes $data2_2
+if $data2_1 != 0 then
+	return -1
+endi
+if $data2_2 != 1 then
+	return -1
+endi
+
+print ========== step3
+sql show log.tables
+
+print $data00
+print $data10
+print $data20
+print $data30
+print $data40
+print $data50
+
+if $rows != 5 then
+	return -1
+endi
+
+print ========== step4
+sql select * from log.dn1
+print $rows
+$rows1 = $rows
+
+sleep 3000
+sql select * from log.dn1
+print $rows
+$rows2 = $rows
+
+if $rows2 <= $rows1 then
+	return -1
+endi
+
+print ========== step5
+sql select * from log.dn2
+print $rows
+$rows1 = $rows
+
+sleep 3000
+sql select * from log.dn2
+print $rows
+$rows2 = $rows
+
+if $rows2 <= $rows1 then
+	return -1
+endi
+
+system sh/exec.sh -n dnode1 -s stop  -x SIGINT
+system sh/exec.sh -n dnode2 -s stop  -x SIGINT

tests/script/unique/dnode/monitor_bug.sim

@@ -18,8 +18,8 @@ sql connect
 sleep 5000
 
 sql show dnodes
-print dnode1 openVnodes $data3_1
+print dnode1 openVnodes $data2_1
-if $data3_1 != 3 then
+if $data2_1 != 1 then
 	return -1
 endi
 
@@ -31,22 +31,21 @@ $x = 0
 show2: 
 	$x = $x + 1
 	sleep 2000
-	if $x == 30 then
+	if $x == 10 then
 		return -1
 	endi
 	
 sql show dnodes
-print dnode1 openVnodes $data3_1
+print dnode1 openVnodes $data2_1
-print dnode2 openVnodes $data3_2
+print dnode2 openVnodes $data2_2
-if $data3_1 != 4 then
+if $data2_1 != 0 then
 	goto show2
 endi
-if $data3_2 != 3 then
+if $data2_2 != 1 then
 	goto show2
 endi
 
 print ========== step3
-sleep 3000
 sql show log.tables
 
 print $data00
@@ -56,6 +55,23 @@ print $data30
 print $data40
 print $data50
 
-if $rows != 5 then
+if $rows != 4 then
 	return -1
 endi
+
+print ========== step4
+sql select * from log.dn1
+print $rows
+$rows1 = $rows
+
+sleep 3000
+sql select * from log.dn1
+print $rows
+$rows2 = $rows
+
+if $rows2 <= $rows1 then
+	return -1
+endi
+
+system sh/exec.sh -n dnode1 -s stop  -x SIGINT
+system sh/exec.sh -n dnode2 -s stop  -x SIGINT