merge from develop

src/client/inc/tscUtil.h

@@ -176,8 +176,6 @@ SColumn* tscColumnListInsert(SArray* pColList, SColumnIndex* colIndex);
 SArray* tscColumnListClone(const SArray* src, int16_t tableIndex);
 void tscColumnListDestroy(SArray* pColList);
 
-SColumnFilterInfo* tscFilterInfoClone(const SColumnFilterInfo* src, int32_t numOfFilters);
-
 int32_t tscValidateName(SSQLToken* pToken);
 
 void tscIncStreamExecutionCount(void* pStream);

src/client/inc/tsclient.h

@@ -32,8 +32,8 @@ extern "C" {
 
 #include "qExecutor.h"
 #include "qsqlparser.h"
-#include "qsqltype.h"
 #include "qtsbuf.h"
+#include "tcmdtype.h"
 
 // forward declaration
 struct SSqlInfo;
@@ -395,7 +395,6 @@ TAOS *taos_connect_a(char *ip, char *user, char *pass, char *db, uint16_t port,
                      void *param, void **taos);
 void waitForQueryRsp(void *param, TAOS_RES *tres, int code) ;
 
-int doAsyncParseSql(SSqlObj* pSql);
 void doAsyncQuery(STscObj *pObj, SSqlObj *pSql, void (*fp)(), void *param, const char *sqlstr, size_t sqlLen);
 
 void tscProcessMultiVnodesImportFromFile(SSqlObj *pSql);
@@ -403,13 +402,14 @@ void tscKillSTableQuery(SSqlObj *pSql);
 void tscInitResObjForLocalQuery(SSqlObj *pObj, int32_t numOfRes, int32_t rowLen);
 bool tscIsUpdateQuery(SSqlObj* pSql);
 bool tscHasReachLimitation(SQueryInfo *pQueryInfo, SSqlRes *pRes);
+
+// todo remove this function.
 bool tscResultsetFetchCompleted(TAOS_RES *result);
 
 char *tscGetErrorMsgPayload(SSqlCmd *pCmd);
 
 int32_t tscInvalidSQLErrMsg(char *msg, const char *additionalInfo, const char *sql);
 
-void    tscQueueAsyncFreeResult(SSqlObj *pSql);
 int32_t tscToSQLCmd(SSqlObj *pSql, struct SSqlInfo *pInfo);
 void    tscGetResultColumnChr(SSqlRes *pRes, SFieldInfo* pFieldInfo, int32_t column);
 

src/client/src/tscAsync.c

@@ -213,7 +213,8 @@ void taos_fetch_rows_a(TAOS_RES *taosa, void (*fp)(void *, TAOS_RES *, int), voi
   // handle the sub queries of join query
   if (pCmd->command == TSDB_SQL_TABLE_JOIN_RETRIEVE) {
     tscFetchDatablockFromSubquery(pSql);
-  } else if (pRes->completed && pCmd->command == TSDB_SQL_FETCH) {
+  } else if (pRes->completed) {
+    if(pCmd->command == TSDB_SQL_FETCH) {
       if (hasMoreVnodesToTry(pSql)) {  // sequentially retrieve data from remain vnodes.
         tscTryQueryNextVnode(pSql, tscAsyncQueryRowsForNextVnode);
         return;
@@ -234,6 +235,12 @@ void taos_fetch_rows_a(TAOS_RES *taosa, void (*fp)(void *, TAOS_RES *, int), voi
         (*pSql->fetchFp)(param, pSql, 0);
       }
       return;
+    } else if (pCmd->command == TSDB_SQL_RETRIEVE) {
+      // in case of show command, return no data
+      (*pSql->fetchFp)(param, pSql, 0);
+    } else {
+      assert(0);
+    }
   } else { // current query is not completed, continue retrieve from node
     if (pCmd->command != TSDB_SQL_RETRIEVE_LOCALMERGE && pCmd->command < TSDB_SQL_LOCAL) {
       pCmd->command = (pCmd->command > TSDB_SQL_MGMT) ? TSDB_SQL_RETRIEVE : TSDB_SQL_FETCH;
@@ -405,17 +412,6 @@ void tscProcessAsyncFree(SSchedMsg *pMsg) {
   taos_free_result(pSql);
 }
 
-void tscQueueAsyncFreeResult(SSqlObj *pSql) {
-  tscDebug("%p sqlObj put in queue to async free", pSql);
-
-  SSchedMsg schedMsg = { 0 };
-  schedMsg.fp = tscProcessAsyncFree;
-  schedMsg.ahandle = pSql;
-  schedMsg.thandle = (void *)1;
-  schedMsg.msg = NULL;
-  taosScheduleTask(tscQhandle, &schedMsg);
-}
-
 int tscSendMsgToServer(SSqlObj *pSql);
 
 void tscTableMetaCallBack(void *param, TAOS_RES *res, int code) {

src/client/src/tscServer.c

@@ -14,8 +14,8 @@
  */
 
 #include "os.h"
-#include "qsqltype.h"
 #include "tcache.h"
+#include "tcmdtype.h"
 #include "trpc.h"
 #include "tscLocalMerge.h"
 #include "tscLog.h"

src/client/src/tscSystem.c

@@ -148,7 +148,7 @@ void taos_init_imp() {
   refreshTime = refreshTime < 10 ? 10 : refreshTime;
 
   if (tscCacheHandle == NULL) {
-    tscCacheHandle = taosCacheInit(TSDB_DATA_TYPE_BINARY, refreshTime, false, NULL);
+    tscCacheHandle = taosCacheInit(TSDB_DATA_TYPE_BINARY, refreshTime, false, NULL, "client");
   }
 
   tscDebug("client is initialized successfully");

src/client/src/tscUtil.c

@@ -1115,31 +1115,6 @@ SColumn* tscColumnListInsert(SArray* pColumnList, SColumnIndex* pColIndex) {
   return taosArrayGetP(pColumnList, i);
 }
 
-SColumnFilterInfo* tscFilterInfoClone(const SColumnFilterInfo* src, int32_t numOfFilters) {
-  if (numOfFilters == 0) {
-    assert(src == NULL);
-    return NULL;
-  }
-  
-  SColumnFilterInfo* pFilter = calloc(1, numOfFilters * sizeof(SColumnFilterInfo));
-  
-  memcpy(pFilter, src, sizeof(SColumnFilterInfo) * numOfFilters);
-  for (int32_t j = 0; j < numOfFilters; ++j) {
-    
-    if (pFilter[j].filterstr) {
-      size_t len = (size_t) pFilter[j].len + 1 * TSDB_NCHAR_SIZE;
-      pFilter[j].pz = (int64_t) calloc(1, len);
-      
-      memcpy((char*)pFilter[j].pz, (char*)src[j].pz, (size_t)len);
-    }
-  }
-  
-  assert(src->filterstr == 0 || src->filterstr == 1);
-  assert(!(src->lowerRelOptr == TSDB_RELATION_INVALID && src->upperRelOptr == TSDB_RELATION_INVALID));
-  
-  return pFilter;
-}
-
 static void destroyFilterInfo(SColumnFilterInfo* pFilterInfo, int32_t numOfFilters) {
   for(int32_t i = 0; i < numOfFilters; ++i) {
     if (pFilterInfo[i].filterstr) {

src/common/inc/tcmdtype.h

@@ -13,8 +13,8 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef TDENGINE_QSQLCMD_H
+#ifndef TDENGINE_TSQLMSGTYPE_H
-#define TDENGINE_QSQLCMD_H
+#define TDENGINE_TSQLMSGTYPE_H
 
 #ifdef __cplusplus
 extern "C" {
@@ -109,4 +109,4 @@ extern char *sqlCmd[];
 }
 #endif
 
-#endif  // TDENGINE_QSQLCMD_H
+#endif  // TDENGINE_TSQLMSGTYPE_H

src/common/inc/tdataformat.h

@@ -50,8 +50,8 @@ extern "C" {
 typedef struct {
   int8_t  type;    // Column type
   int16_t colId;   // column ID
-  int32_t bytes;   // column bytes
+  int16_t bytes;   // column bytes
-  int32_t offset;  // point offset in SDataRow after the header part
+  int16_t offset;  // point offset in SDataRow after the header part
 } STColumn;
 
 #define colType(col) ((col)->type)
@@ -116,7 +116,7 @@ typedef struct {
 int       tdInitTSchemaBuilder(STSchemaBuilder *pBuilder, int32_t version);
 void      tdDestroyTSchemaBuilder(STSchemaBuilder *pBuilder);
 void      tdResetTSchemaBuilder(STSchemaBuilder *pBuilder, int32_t version);
-int       tdAddColToSchema(STSchemaBuilder *pBuilder, int8_t type, int16_t colId, int32_t bytes);
+int       tdAddColToSchema(STSchemaBuilder *pBuilder, int8_t type, int16_t colId, int16_t bytes);
 STSchema *tdGetSchemaFromBuilder(STSchemaBuilder *pBuilder);
 
 // ----------------- Data row structure

src/common/inc/tname.h

@@ -27,4 +27,6 @@ SSchema tGetTableNameColumnSchema();
 
 bool tscValidateTableNameLength(size_t len);
 
+SColumnFilterInfo* tscFilterInfoClone(const SColumnFilterInfo* src, int32_t numOfFilters);
+
 #endif  // TDENGINE_NAME_H

src/common/src/sqlcmdstr.c

@@ -15,4 +15,4 @@
 
 #define TSDB_SQL_C
 
-#include "qsqltype.h"
+#include "tcmdtype.h"

src/common/src/tdataformat.c

@@ -43,7 +43,7 @@ int tdEncodeSchema(void **buf, STSchema *pSchema) {
     STColumn *pCol = schemaColAt(pSchema, i);
     tlen += taosEncodeFixedI8(buf, colType(pCol));
     tlen += taosEncodeFixedI16(buf, colColId(pCol));
-    tlen += taosEncodeFixedI32(buf, colBytes(pCol));
+    tlen += taosEncodeFixedI16(buf, colBytes(pCol));
   }
 
   return tlen;
@@ -65,10 +65,10 @@ void *tdDecodeSchema(void *buf, STSchema **pRSchema) {
   for (int i = 0; i < numOfCols; i++) {
     int8_t  type = 0;
     int16_t colId = 0;
-    int32_t bytes = 0;
+    int16_t bytes = 0;
     buf = taosDecodeFixedI8(buf, &type);
     buf = taosDecodeFixedI16(buf, &colId);
-    buf = taosDecodeFixedI32(buf, &bytes);
+    buf = taosDecodeFixedI16(buf, &bytes);
     if (tdAddColToSchema(&schemaBuilder, type, colId, bytes) < 0) {
       tdDestroyTSchemaBuilder(&schemaBuilder);
       return NULL;
@@ -105,7 +105,7 @@ void tdResetTSchemaBuilder(STSchemaBuilder *pBuilder, int32_t version) {
   pBuilder->version = version;
 }
 
-int tdAddColToSchema(STSchemaBuilder *pBuilder, int8_t type, int16_t colId, int32_t bytes) {
+int tdAddColToSchema(STSchemaBuilder *pBuilder, int8_t type, int16_t colId, int16_t bytes) {
   if (!isValidDataType(type)) return -1;
 
   if (pBuilder->nCols >= pBuilder->tCols) {

src/common/src/tname.c

@@ -50,3 +50,28 @@ SSchema tGetTableNameColumnSchema() {
 bool tscValidateTableNameLength(size_t len) {
   return len < TSDB_TABLE_NAME_LEN;
 }
+
+SColumnFilterInfo* tscFilterInfoClone(const SColumnFilterInfo* src, int32_t numOfFilters) {
+  if (numOfFilters == 0) {
+    assert(src == NULL);
+    return NULL;
+  }
+
+  SColumnFilterInfo* pFilter = calloc(1, numOfFilters * sizeof(SColumnFilterInfo));
+
+  memcpy(pFilter, src, sizeof(SColumnFilterInfo) * numOfFilters);
+  for (int32_t j = 0; j < numOfFilters; ++j) {
+
+    if (pFilter[j].filterstr) {
+      size_t len = (size_t) pFilter[j].len + 1 * TSDB_NCHAR_SIZE;
+      pFilter[j].pz = (int64_t) calloc(1, len);
+
+      memcpy((char*)pFilter[j].pz, (char*)src[j].pz, (size_t)len);
+    }
+  }
+
+  assert(src->filterstr == 0 || src->filterstr == 1);
+  assert(!(src->lowerRelOptr == TSDB_RELATION_INVALID && src->upperRelOptr == TSDB_RELATION_INVALID));
+
+  return pFilter;
+}

src/cq/src/cqMain.c

@@ -213,6 +213,8 @@ void cqDrop(void *handle) {
   pObj->pStream = NULL;
 
   cTrace("vgId:%d, id:%d CQ:%s is dropped", pContext->vgId, pObj->tid, pObj->sqlStr); 
+  tdFreeSchema(pObj->pSchema);
+  free(pObj->sqlStr);
   free(pObj);
 
   pthread_mutex_unlock(&pContext->mutex);

src/inc/query.h

@@ -44,7 +44,7 @@ void qDestroyQueryInfo(qinfo_t qinfo);
  * @param qinfo
  * @return
  */
-void qTableQuery(qinfo_t qinfo, void (*fp)(void*), void* param);
+void qTableQuery(qinfo_t qinfo);
 
 /**
  * Retrieve the produced results information, if current query is not paused or completed,

src/inc/taosmsg.h

@@ -285,9 +285,9 @@ typedef struct {
   int32_t   tid;
   int16_t   tversion;
   int16_t   colId;
-  int16_t   type;
-  int16_t   bytes;
   int32_t   tagValLen;
+  int16_t   numOfTags;
+  int32_t   schemaLen;
   char      data[];
 } SUpdateTableTagValMsg;
 

src/mnode/inc/mnodeProfile.h

@@ -41,7 +41,7 @@ int32_t mnodeInitProfile();
 void    mnodeCleanupProfile();
 
 SConnObj *mnodeCreateConn(char *user, uint32_t ip, uint16_t port);
-SConnObj *mnodeAccquireConn(uint32_t connId, char *user, uint32_t ip, uint16_t port);
+SConnObj *mnodeAccquireConn(int32_t connId, char *user, uint32_t ip, uint16_t port);
 void      mnodeReleaseConn(SConnObj *pConn);
 int32_t   mnodeSaveQueryStreamList(SConnObj *pConn, SCMHeartBeatMsg *pHBMsg);
 

src/mnode/src/mnodeProfile.c

@@ -43,7 +43,7 @@
 
 extern void *tsMnodeTmr;
 static SCacheObj *tsMnodeConnCache = NULL;
-static uint32_t tsConnIndex = 0;
+static int32_t tsConnIndex = 0;
 
 static int32_t mnodeGetQueryMeta(STableMetaMsg *pMeta, SShowObj *pShow, void *pConn);
 static int32_t mnodeRetrieveQueries(SShowObj *pShow, char *data, int32_t rows, void *pConn);
@@ -68,7 +68,7 @@ int32_t mnodeInitProfile() {
   mnodeAddWriteMsgHandle(TSDB_MSG_TYPE_CM_KILL_STREAM, mnodeProcessKillStreamMsg);
   mnodeAddWriteMsgHandle(TSDB_MSG_TYPE_CM_KILL_CONN, mnodeProcessKillConnectionMsg);
 
-  tsMnodeConnCache = taosCacheInitWithCb(TSDB_DATA_TYPE_BINARY, CONN_CHECK_TIME,false, mnodeFreeConn);
+  tsMnodeConnCache = taosCacheInitWithCb(TSDB_DATA_TYPE_INT, CONN_CHECK_TIME, false, mnodeFreeConn, "conn");
   return 0;
 }
 
@@ -89,7 +89,7 @@ SConnObj *mnodeCreateConn(char *user, uint32_t ip, uint16_t port) {
     return NULL;
   }
 
-  uint32_t connId = atomic_add_fetch_32(&tsConnIndex, 1);
+  int32_t connId = atomic_add_fetch_32(&tsConnIndex, 1);
   if (connId == 0) atomic_add_fetch_32(&tsConnIndex, 1);
 
   SConnObj connObj = {
@@ -100,9 +100,7 @@ SConnObj *mnodeCreateConn(char *user, uint32_t ip, uint16_t port) {
   };
   tstrncpy(connObj.user, user, sizeof(connObj.user));
   
-  char key[10];
+  SConnObj *pConn = taosCachePut(tsMnodeConnCache, &connId, sizeof(int32_t), &connObj, sizeof(connObj), CONN_KEEP_TIME);
-  int32_t len = sprintf(key, "%u", connId);
-  SConnObj *pConn = taosCachePut(tsMnodeConnCache, key, len, &connObj, sizeof(connObj), CONN_KEEP_TIME);
   
   mDebug("connId:%d, is created, user:%s ip:%s:%u", connId, user, taosIpStr(ip), port);
   return pConn;
@@ -113,12 +111,9 @@ void mnodeReleaseConn(SConnObj *pConn) {
   taosCacheRelease(tsMnodeConnCache, (void **)&pConn, false);
 }
 
-SConnObj *mnodeAccquireConn(uint32_t connId, char *user, uint32_t ip, uint16_t port) {
+SConnObj *mnodeAccquireConn(int32_t connId, char *user, uint32_t ip, uint16_t port) {
-  char key[10];
-  int32_t len = sprintf(key, "%u", connId);
   uint64_t expireTime = CONN_KEEP_TIME * 1000 + (uint64_t)taosGetTimestampMs();
-
+  SConnObj *pConn = taosCacheUpdateExpireTimeByName(tsMnodeConnCache, &connId, sizeof(int32_t), expireTime);
-  SConnObj *pConn = taosCacheUpdateExpireTimeByName(tsMnodeConnCache, key, len, expireTime);
   if (pConn == NULL) {
     mError("connId:%d, is already destroyed, user:%s ip:%s:%u", connId, user, taosIpStr(ip), port);
     return NULL;
@@ -547,7 +542,8 @@ static int32_t mnodeProcessKillQueryMsg(SMnodeMsg *pMsg) {
 
   int32_t queryId = (int32_t)strtol(queryIdStr, NULL, 10);
 
-  SConnObj *pConn = taosCacheAcquireByKey(tsMnodeConnCache, connIdStr, strlen(connIdStr));
+  int32_t connId = atoi(connIdStr);
+  SConnObj *pConn = taosCacheAcquireByKey(tsMnodeConnCache, &connId, sizeof(int32_t));
   if (pConn == NULL) {
     mError("connId:%s, failed to kill queryId:%d, conn not exist", connIdStr, queryId);
     return TSDB_CODE_MND_INVALID_CONN_ID;
@@ -576,8 +572,9 @@ static int32_t mnodeProcessKillStreamMsg(SMnodeMsg *pMsg) {
   }
 
   int32_t streamId = (int32_t)strtol(streamIdStr, NULL, 10);
+  int32_t connId = atoi(connIdStr);
 
-  SConnObj *pConn = taosCacheAcquireByKey(tsMnodeConnCache, connIdStr, strlen(connIdStr));
+  SConnObj *pConn = taosCacheAcquireByKey(tsMnodeConnCache, &connId, sizeof(int32_t));
   if (pConn == NULL) {
     mError("connId:%s, failed to kill streamId:%d, conn not exist", connIdStr, streamId);
     return TSDB_CODE_MND_INVALID_CONN_ID;
@@ -594,7 +591,8 @@ static int32_t mnodeProcessKillConnectionMsg(SMnodeMsg *pMsg) {
   if (strcmp(pUser->user, TSDB_DEFAULT_USER) != 0) return TSDB_CODE_MND_NO_RIGHTS;
 
   SCMKillConnMsg *pKill = pMsg->rpcMsg.pCont;
-  SConnObj *      pConn = taosCacheAcquireByKey(tsMnodeConnCache, pKill->queryId, strlen(pKill->queryId));
+  int32_t connId = atoi(pKill->queryId);
+  SConnObj *      pConn = taosCacheAcquireByKey(tsMnodeConnCache, &connId, sizeof(int32_t));
   if (pConn == NULL) {
     mError("connId:%s, failed to kill, conn not exist", pKill->queryId);
     return TSDB_CODE_MND_INVALID_CONN_ID;

src/mnode/src/mnodeShow.c

@@ -65,7 +65,7 @@ int32_t mnodeInitShow() {
   mnodeAddReadMsgHandle(TSDB_MSG_TYPE_CM_CONNECT, mnodeProcessConnectMsg);
   mnodeAddReadMsgHandle(TSDB_MSG_TYPE_CM_USE_DB, mnodeProcessUseMsg);
   
-  tsMnodeShowCache = taosCacheInitWithCb(TSDB_DATA_TYPE_BINARY, 5, false, mnodeFreeShowObj);
+  tsMnodeShowCache = taosCacheInitWithCb(TSDB_DATA_TYPE_INT, 5, false, mnodeFreeShowObj, "show");
   return 0;
 }
 
@@ -364,10 +364,7 @@ static bool mnodeCheckShowFinished(SShowObj *pShow) {
 }
 
 static bool mnodeAccquireShowObj(SShowObj *pShow) {
-  char key[10];
+  SShowObj *pSaved = taosCacheAcquireByKey(tsMnodeShowCache, &pShow->index, sizeof(int32_t));
-  int32_t len = sprintf(key, "%d", pShow->index);
-
-  SShowObj *pSaved = taosCacheAcquireByKey(tsMnodeShowCache, key, len);
   if (pSaved == pShow) {
     mDebug("%p, show is accquired from cache", pShow);
     return true;
@@ -378,14 +375,11 @@ static bool mnodeAccquireShowObj(SShowObj *pShow) {
 
 static void *mnodePutShowObj(SShowObj *pShow, int32_t size) {
   if (tsMnodeShowCache != NULL) {
-    char key[10];
     pShow->index = atomic_add_fetch_32(&tsShowObjIndex, 1);
-    int32_t len = sprintf(key, "%d", pShow->index);
+    SShowObj *newQhandle = taosCachePut(tsMnodeShowCache, &pShow->index, sizeof(int32_t), pShow, size, 6);
-
+    mDebug("%p, show is put into cache, index:%d", newQhandle, pShow->index);
-    SShowObj *newQhandle = taosCachePut(tsMnodeShowCache, key, len, pShow, size, 6);
     free(pShow);
 
-    mDebug("%p, show is put into cache, index:%s", newQhandle, key);
     return newQhandle;
   }
 

src/plugins/http/src/httpContext.c

@@ -53,12 +53,12 @@ static void httpDestroyContext(void *data) {
   httpFreeJsonBuf(pContext);
   httpFreeMultiCmds(pContext);
   
-  httpDebug("context:%p, is destroyed, refCount:%d", pContext, pContext->refCount);
+  httpDebug("context:%p, is destroyed, refCount:%d data:%p", pContext, pContext->refCount, data);
   tfree(pContext);
 }
 
 bool httpInitContexts() {
-  tsHttpServer.contextCache = taosCacheInitWithCb(TSDB_DATA_TYPE_BINARY, 2, false, httpDestroyContext);
+  tsHttpServer.contextCache = taosCacheInitWithCb(TSDB_DATA_TYPE_BIGINT, 2, false, httpDestroyContext, "restc");
   if (tsHttpServer.contextCache == NULL) {
     httpError("failed to init context cache");
     return false;
@@ -103,17 +103,14 @@ HttpContext *httpCreateContext(int32_t fd) {
   HttpContext *pContext = calloc(1, sizeof(HttpContext));
   if (pContext == NULL) return NULL;
 
-  char contextStr[16] = {0};
-  int32_t keySize = snprintf(contextStr, sizeof(contextStr), "%p", pContext);
-  
   pContext->fd = fd;
   pContext->httpVersion = HTTP_VERSION_10;
   pContext->lastAccessTime = taosGetTimestampSec();
   pContext->state = HTTP_CONTEXT_STATE_READY;
 
-  HttpContext **ppContext = taosCachePut(tsHttpServer.contextCache, contextStr, keySize, &pContext, sizeof(HttpContext *), 3);
+  HttpContext **ppContext = taosCachePut(tsHttpServer.contextCache, &pContext, sizeof(void *), &pContext, sizeof(void *), 3);
   pContext->ppContext = ppContext;
-  httpDebug("context:%p, fd:%d, is created, item:%p", pContext, fd, ppContext);
+  httpDebug("context:%p, fd:%d, is created, data:%p", pContext, fd, ppContext);
 
   // set the ref to 0 
   taosCacheRelease(tsHttpServer.contextCache, (void**)&ppContext, false);
@@ -122,16 +119,13 @@ HttpContext *httpCreateContext(int32_t fd) {
 }
 
 HttpContext *httpGetContext(void *ptr) {
-  char contextStr[16] = {0};
+  HttpContext **ppContext = taosCacheAcquireByKey(tsHttpServer.contextCache, &ptr, sizeof(HttpContext *));
-  int32_t len = snprintf(contextStr, sizeof(contextStr), "%p", ptr);
-  
-  HttpContext **ppContext = taosCacheAcquireByKey(tsHttpServer.contextCache, contextStr, len);
 
   if (ppContext) {
     HttpContext *pContext = *ppContext;
     if (pContext) {
       int32_t refCount = atomic_add_fetch_32(&pContext->refCount, 1);
-      httpDebug("context:%p, fd:%d, is accquired, refCount:%d", pContext, pContext->fd, refCount);
+      httpDebug("context:%p, fd:%d, is accquired, data:%p refCount:%d", pContext, pContext->fd, ppContext, refCount);
       return pContext;
     }
   }
@@ -141,9 +135,10 @@ HttpContext *httpGetContext(void *ptr) {
 void httpReleaseContext(HttpContext *pContext) {
   int32_t refCount = atomic_sub_fetch_32(&pContext->refCount, 1);
   assert(refCount >= 0);
-  httpDebug("context:%p, is releasd, refCount:%d", pContext, refCount);
 
   HttpContext **ppContext = pContext->ppContext;
+  httpDebug("context:%p, is releasd, data:%p refCount:%d", pContext, ppContext, refCount);
+
   if (tsHttpServer.contextCache != NULL) {
     taosCacheRelease(tsHttpServer.contextCache, (void **)(&ppContext), false);
   } else {

src/plugins/http/src/httpSession.c

@@ -115,7 +115,7 @@ void httpCleanUpSessions() {
 }
 
 bool httpInitSessions() {
-  tsHttpServer.sessionCache = taosCacheInitWithCb(TSDB_DATA_TYPE_BINARY, 5, false, httpDestroySession);
+  tsHttpServer.sessionCache = taosCacheInitWithCb(TSDB_DATA_TYPE_BINARY, 5, false, httpDestroySession, "rests");
   if (tsHttpServer.sessionCache == NULL) {
     httpError("failed to init session cache");
     return false;

src/query/inc/qExecutor.h

@@ -95,16 +95,13 @@ typedef struct SSingleColumnFilterInfo {
 } SSingleColumnFilterInfo;
 
 typedef struct STableQueryInfo {  // todo merge with the STableQueryInfo struct
-  int32_t     tableIndex;
-  int32_t     groupIndex;  // group id in table list
   TSKEY       lastKey;
-  int32_t     numOfRes;
+  int32_t     groupIndex;     // group id in table list
   int16_t     queryRangeSet;  // denote if the query range is set, only available for interval query
   int64_t     tag;
   STimeWindow win;
   STSCursor   cur;
   void*       pTable;         // for retrieve the page id list
-
   SWindowResInfo windowResInfo;
 } STableQueryInfo;
 
@@ -127,11 +124,6 @@ typedef struct SQueryCostInfo {
   uint64_t computTime;
 } SQueryCostInfo;
 
-//typedef struct SGroupItem {
-//  void            *pTable;
-//  STableQueryInfo *info;
-//} SGroupItem;
-
 typedef struct SQuery {
   int16_t          numOfCols;
   int16_t          numOfTags;
@@ -173,12 +165,12 @@ typedef struct SQueryRuntimeEnv {
   STSBuf*              pTSBuf;
   STSCursor            cur;
   SQueryCostInfo       summary;
-  bool                 stableQuery;      // super table query or not
   void*                pQueryHandle;
   void*                pSecQueryHandle;  // another thread for
-  SDiskbasedResultBuf* pResultBuf;       // query result buffer based on blocked-wised disk file
+  bool                 stableQuery;      // super table query or not
   bool                 topBotQuery;      // false
   int32_t              prevGroupId;      // previous executed group id
+  SDiskbasedResultBuf* pResultBuf;       // query result buffer based on blocked-wised disk file
 } SQueryRuntimeEnv;
 
 typedef struct SQInfo {
@@ -205,7 +197,8 @@ typedef struct SQInfo {
    */
   int32_t          tableIndex;
   int32_t          numOfGroupResultPages;
-  _qinfo_free_fn_t fn;
+  _qinfo_free_fn_t freeFn;
+  jmp_buf          env;
 } SQInfo;
 
 #endif  // TDENGINE_QUERYEXECUTOR_H

src/query/src/qExecutor.c

@@ -13,6 +13,7 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 #include "os.h"
+#include "taosmsg.h"
 #include "qfill.h"
 
 #include "hash.h"
@@ -22,9 +23,8 @@
 #include "qresultBuf.h"
 #include "query.h"
 #include "queryLog.h"
-#include "taosmsg.h"
 #include "tlosertree.h"
-#include "tscUtil.h"  // todo move the function to common module
+#include "exception.h"
 #include "tscompression.h"
 #include "ttime.h"
 
@@ -87,6 +87,17 @@ typedef struct {
   STSCursor   cur;
 } SQueryStatusInfo;
 
+static UNUSED_FUNC void *u_malloc (size_t __size) {
+//  uint32_t v = rand();
+//  if (v % 5 <= 1) {
+//    return NULL;
+//  } else {
+    return malloc(__size);
+//  }
+}
+
+#define malloc  u_malloc
+
 #define CLEAR_QUERY_STATUS(q, st)   ((q)->status &= (~(st)))
 #define GET_NUM_OF_TABLEGROUP(q)    taosArrayGetSize((q)->tableqinfoGroupInfo.pGroupList)
 #define GET_TABLEGROUP(q, _index)   ((SArray*) taosArrayGetP((q)->tableqinfoGroupInfo.pGroupList, (_index)))
@@ -2586,7 +2597,6 @@ void copyResToQueryResultBuf(SQInfo *pQInfo, SQuery *pQuery) {
 }
 
 int64_t getNumOfResultWindowRes(SQuery *pQuery, SWindowResult *pWindowRes) {
-//  int64_t maxOutput = 0;
   for (int32_t j = 0; j < pQuery->numOfOutput; ++j) {
     int32_t functionId = pQuery->pSelectExpr[j].base.functionId;
 
@@ -2604,15 +2614,6 @@ int64_t getNumOfResultWindowRes(SQuery *pQuery, SWindowResult *pWindowRes) {
     if (pResultInfo->numOfRes > 0) {
       return pResultInfo->numOfRes;
     }
-//    if (pResultInfo != NULL && maxOutput < pResultInfo->numOfRes) {
-//      maxOutput = pResultInfo->numOfRes;
-//
-//      if (maxOutput > 0) {
-//        break;
-//      }
-//    }
-//
-//    assert(pResultInfo != NULL);
   }
 
   return 0;
@@ -2623,12 +2624,19 @@ int32_t mergeIntoGroupResultImpl(SQInfo *pQInfo, SArray *pGroup) {
   SQuery *          pQuery = pRuntimeEnv->pQuery;
 
   size_t size = taosArrayGetSize(pGroup);
-
   tFilePage **buffer = pQuery->sdata;
-  int32_t *   posList = calloc(size, sizeof(int32_t));
 
+  int32_t*   posList = calloc(size, sizeof(int32_t));
   STableQueryInfo **pTableList = malloc(POINTER_BYTES * size);
 
+  if (pTableList == NULL || posList == NULL) {
+    tfree(posList);
+    tfree(pTableList);
+
+    qError("QInfo:%p failed alloc memory", pQInfo);
+    longjmp(pQInfo->env, TSDB_CODE_QRY_OUT_OF_MEMORY);
+  }
+
   // todo opt for the case of one table per group
   int32_t numOfTables = 0;
   for (int32_t i = 0; i < size; ++i) {
@@ -4069,7 +4077,7 @@ static SFillColInfo* taosCreateFillColInfo(SQuery* pQuery) {
   return pFillCol;
 }
 
-int32_t doInitQInfo(SQInfo *pQInfo, STSBuf *pTsBuf, void *tsdb, int32_t vgId, bool isSTableQuery, void* freeParam, _qinfo_free_fn_t fn) {
+int32_t doInitQInfo(SQInfo *pQInfo, STSBuf *pTsBuf, void *tsdb, int32_t vgId, bool isSTableQuery) {
   int32_t code = TSDB_CODE_SUCCESS;
   
   SQueryRuntimeEnv *pRuntimeEnv = &pQInfo->runtimeEnv;
@@ -4083,8 +4091,6 @@ int32_t doInitQInfo(SQInfo *pQInfo, STSBuf *pTsBuf, void *tsdb, int32_t vgId, bo
   
   pQInfo->tsdb = tsdb;
   pQInfo->vgId = vgId;
-  pQInfo->param = freeParam;
-  pQInfo->fn = fn;
 
   pRuntimeEnv->pQuery = pQuery;
   pRuntimeEnv->pTSBuf = pTsBuf;
@@ -4333,7 +4339,9 @@ static void sequentialTableProcess(SQInfo *pQInfo) {
       taosArrayDestroy(s);
 
       // here we simply set the first table as current table
-      pQuery->current = (STableQueryInfo*) GET_TABLEGROUP(pQInfo, 0);
+      SArray* first = GET_TABLEGROUP(pQInfo, pQInfo->groupIndex);
+      pQuery->current = taosArrayGetP(first, 0);
+
       scanOneTableDataBlocks(pRuntimeEnv, pQuery->current->lastKey);
       
       int64_t numOfRes = getNumOfResult(pRuntimeEnv);
@@ -4932,14 +4940,6 @@ static void tableQueryImpl(SQInfo *pQInfo) {
   // record the total elapsed time
   pRuntimeEnv->summary.elapsedTime += (taosGetTimestampUs() - st);
   assert(pQInfo->tableqinfoGroupInfo.numOfTables == 1);
-
-  /* check if query is killed or not */
-  if (isQueryKilled(pQInfo)) {
-    qDebug("QInfo:%p query is killed", pQInfo);
-  } else {
-    qDebug("QInfo:%p query paused, %" PRId64 " rows returned, numOfTotal:%" PRId64 " rows",
-        pQInfo, pQuery->rec.rows, pQuery->rec.total + pQuery->rec.rows);
-  }
 }
 
 static void stableQueryImpl(SQInfo *pQInfo) {
@@ -4961,10 +4961,6 @@ static void stableQueryImpl(SQInfo *pQInfo) {
 
   // record the total elapsed time
   pQInfo->runtimeEnv.summary.elapsedTime += (taosGetTimestampUs() - st);
-  
-  if (pQuery->rec.rows == 0) {
-    qDebug("QInfo:%p over, %zu tables queried, %"PRId64" rows are returned", pQInfo, pQInfo->tableqinfoGroupInfo.numOfTables, pQuery->rec.total);
-  }
 }
 
 static int32_t getColumnIndexInSource(SQueryTableMsg *pQueryMsg, SSqlFuncMsg *pExprMsg, SColumnInfo* pTagCols) {
@@ -5076,6 +5072,8 @@ static char *createTableIdList(SQueryTableMsg *pQueryMsg, char *pMsg, SArray **p
  */
 static int32_t convertQueryMsg(SQueryTableMsg *pQueryMsg, SArray **pTableIdList, SSqlFuncMsg ***pExpr,
                                char **tagCond, char** tbnameCond, SColIndex **groupbyCols, SColumnInfo** tagCols) {
+  int32_t code = TSDB_CODE_SUCCESS;
+
   pQueryMsg->numOfTables = htonl(pQueryMsg->numOfTables);
 
   pQueryMsg->window.skey = htobe64(pQueryMsg->window.skey);
@@ -5102,7 +5100,8 @@ static int32_t convertQueryMsg(SQueryTableMsg *pQueryMsg, SArray **pTableIdList,
 
   // query msg safety check
   if (!validateQueryMsg(pQueryMsg)) {
-    return TSDB_CODE_QRY_INVALID_MSG;
+    code = TSDB_CODE_QRY_INVALID_MSG;
+    goto _cleanup;
   }
 
   char *pMsg = (char *)(pQueryMsg->colList) + sizeof(SColumnInfo) * pQueryMsg->numOfCols;
@@ -5174,7 +5173,8 @@ static int32_t convertQueryMsg(SQueryTableMsg *pQueryMsg, SArray **pTableIdList,
     int16_t functionId = pExprMsg->functionId;
     if (functionId == TSDB_FUNC_TAG || functionId == TSDB_FUNC_TAGPRJ || functionId == TSDB_FUNC_TAG_DUMMY) {
       if (pExprMsg->colInfo.flag != TSDB_COL_TAG) {  // ignore the column  index check for arithmetic expression.
-        return TSDB_CODE_QRY_INVALID_MSG;
+        code = TSDB_CODE_QRY_INVALID_MSG;
+        goto _cleanup;
       }
     } else {
 //      if (!validateExprColumnInfo(pQueryMsg, pExprMsg)) {
@@ -5186,6 +5186,7 @@ static int32_t convertQueryMsg(SQueryTableMsg *pQueryMsg, SArray **pTableIdList,
   }
 
   if (!validateQuerySourceCols(pQueryMsg, *pExpr)) {
+    code = TSDB_CODE_QRY_INVALID_MSG;
     goto _cleanup;
   }
 
@@ -5193,6 +5194,10 @@ static int32_t convertQueryMsg(SQueryTableMsg *pQueryMsg, SArray **pTableIdList,
 
   if (pQueryMsg->numOfGroupCols > 0) {  // group by tag columns
     *groupbyCols = malloc(pQueryMsg->numOfGroupCols * sizeof(SColIndex));
+    if (*groupbyCols == NULL) {
+      code = TSDB_CODE_QRY_OUT_OF_MEMORY;
+      goto _cleanup;
+    }
 
     for (int32_t i = 0; i < pQueryMsg->numOfGroupCols; ++i) {
       (*groupbyCols)[i].colId = *(int16_t *)pMsg;
@@ -5248,7 +5253,13 @@ static int32_t convertQueryMsg(SQueryTableMsg *pQueryMsg, SArray **pTableIdList,
 
   if (*pMsg != 0) {
     size_t len = strlen(pMsg) + 1;
+
     *tbnameCond = malloc(len);
+    if (*tbnameCond == NULL) {
+      code = TSDB_CODE_QRY_OUT_OF_MEMORY;
+      goto _cleanup;
+    }
+
     strcpy(*tbnameCond, pMsg);
     pMsg += len;
   }
@@ -5258,7 +5269,8 @@ static int32_t convertQueryMsg(SQueryTableMsg *pQueryMsg, SArray **pTableIdList,
          pQueryMsg, pQueryMsg->numOfTables, pQueryMsg->queryType, pQueryMsg->window.skey, pQueryMsg->window.ekey, pQueryMsg->numOfGroupCols,
          pQueryMsg->order, pQueryMsg->numOfOutput, pQueryMsg->numOfCols, pQueryMsg->intervalTime,
          pQueryMsg->fillType, pQueryMsg->tsLen, pQueryMsg->tsNumOfBlocks, pQueryMsg->limit, pQueryMsg->offset);
-  return 0;
+
+  return TSDB_CODE_SUCCESS;
 
 _cleanup:
   tfree(*pExpr);
@@ -5268,7 +5280,8 @@ _cleanup:
   tfree(*groupbyCols);
   tfree(*tagCols);
   tfree(*tagCond);
-  return TSDB_CODE_QRY_INVALID_MSG; 
+
+  return code;
 }
 
 static int32_t buildAirthmeticExprFromMsg(SExprInfo *pArithExprInfo, SQueryTableMsg *pQueryMsg) {
@@ -5656,7 +5669,6 @@ static SQInfo *createQInfoImpl(SQueryTableMsg *pQueryMsg, SArray* pTableIdList,
 
       STableQueryInfo* item = createTableQueryInfo(&pQInfo->runtimeEnv, pTable, window);
       item->groupIndex = i;
-      item->tableIndex = tableIndex++;
       taosArrayPush(p1, &item);
       taosHashPut(pQInfo->tableqinfoGroupInfo.map, &id.tid, sizeof(id.tid), &item, POINTER_BYTES);
     }
@@ -5670,7 +5682,8 @@ static SQInfo *createQInfoImpl(SQueryTableMsg *pQueryMsg, SArray* pTableIdList,
   pQuery->window = pQueryMsg->window;
 
   if (sem_init(&pQInfo->dataReady, 0, 0) != 0) {
-    qError("QInfo:%p init dataReady sem failed, reason:%s", pQInfo, strerror(errno));
+    int32_t code = TAOS_SYSTEM_ERROR(errno);
+    qError("QInfo:%p init dataReady sem failed, reason:%s", pQInfo, tstrerror(code));
     goto _cleanup;
   }
 
@@ -5681,7 +5694,6 @@ static SQInfo *createQInfoImpl(SQueryTableMsg *pQueryMsg, SArray* pTableIdList,
 
 _cleanup:
   freeQInfo(pQInfo);
-
   return NULL;
 }
 
@@ -5723,6 +5735,9 @@ static int32_t initQInfo(SQueryTableMsg *pQueryMsg, void *tsdb, int32_t vgId, SQ
     return TSDB_CODE_SUCCESS;
   }
 
+  pQInfo->param = param;
+  pQInfo->freeFn = fn;
+
   if (pQInfo->tableqinfoGroupInfo.numOfTables == 0) {
     qDebug("QInfo:%p no table qualified for tag filter, abort query", pQInfo);
     setQueryStatus(pQuery, QUERY_COMPLETED);
@@ -5732,7 +5747,7 @@ static int32_t initQInfo(SQueryTableMsg *pQueryMsg, void *tsdb, int32_t vgId, SQ
   }
 
   // filter the qualified
-  if ((code = doInitQInfo(pQInfo, pTSBuf, tsdb, vgId, isSTable, param, fn)) != TSDB_CODE_SUCCESS) {
+  if ((code = doInitQInfo(pQInfo, pTSBuf, tsdb, vgId, isSTable)) != TSDB_CODE_SUCCESS) {
     goto _error;
   }
   
@@ -5786,7 +5801,7 @@ static void freeQInfo(SQInfo *pQInfo) {
   // todo refactor, extract method to destroytableDataInfo
   int32_t numOfGroups = GET_NUM_OF_TABLEGROUP(pQInfo);
   for (int32_t i = 0; i < numOfGroups; ++i) {
-    SArray *p = GET_TABLEGROUP(pQInfo, i);;
+    SArray *p = GET_TABLEGROUP(pQInfo, i);
 
     size_t num = taosArrayGetSize(p);
     for(int32_t j = 0; j < num; ++j) {
@@ -6032,19 +6047,19 @@ void qDestroyQueryInfo(qinfo_t qHandle) {
   qDebug("QInfo:%p dec refCount, value:%d", pQInfo, ref);
 
   if (ref == 0) {
-    _qinfo_free_fn_t fn = pQInfo->fn;
+    _qinfo_free_fn_t freeFp = pQInfo->freeFn;
     void* param = pQInfo->param;
 
     doDestoryQueryInfo(pQInfo);
-    if (fn != NULL) {
+    if (freeFp != NULL) {
       assert(param != NULL);
-      fn(param);
+      freeFp(param);
     }
 
   }
 }
 
-void qTableQuery(qinfo_t qinfo, void (*fp)(void*), void* param) {
+void qTableQuery(qinfo_t qinfo) {
   SQInfo *pQInfo = (SQInfo *)qinfo;
 
   if (pQInfo == NULL || pQInfo->signature != pQInfo) {
@@ -6054,17 +6069,34 @@ void qTableQuery(qinfo_t qinfo, void (*fp)(void*), void* param) {
 
   if (isQueryKilled(pQInfo)) {
     qDebug("QInfo:%p it is already killed, abort", pQInfo);
+
+    sem_post(&pQInfo->dataReady);
     qDestroyQueryInfo(pQInfo);
     return;
   }
 
   if (pQInfo->tableqinfoGroupInfo.numOfTables == 0) {
     qDebug("QInfo:%p no table exists for query, abort", pQInfo);
+
+    sem_post(&pQInfo->dataReady);
+    qDestroyQueryInfo(pQInfo);
+    return;
+  }
+
+  int32_t ret = setjmp(pQInfo->env);
+  // error occurs, record the error code and return to client
+  if (ret != TSDB_CODE_SUCCESS) {
+    pQInfo->code = ret;
+    qDebug("QInfo:%p query abort due to error occurs, code:%s", pQInfo, tstrerror(pQInfo->code));
+    sem_post(&pQInfo->dataReady);
+    qDestroyQueryInfo(pQInfo);
+
     return;
   }
 
   qDebug("QInfo:%p query task is launched", pQInfo);
 
+  SQueryRuntimeEnv* pRuntimeEnv = &pQInfo->runtimeEnv;
   if (onlyQueryTags(pQInfo->runtimeEnv.pQuery)) {
     assert(pQInfo->runtimeEnv.pQueryHandle == NULL);
     buildTagQueryResult(pQInfo);   // todo support the limit/offset
@@ -6074,6 +6106,16 @@ void qTableQuery(qinfo_t qinfo, void (*fp)(void*), void* param) {
     tableQueryImpl(pQInfo);
   }
 
+  SQuery* pQuery = pRuntimeEnv->pQuery;
+  if (isQueryKilled(pQInfo)) {
+    qDebug("QInfo:%p query is killed", pQInfo);
+  } else if (pQuery->rec.rows == 0) {
+    qDebug("QInfo:%p over, %zu tables queried, %"PRId64" rows are returned", pQInfo, pQInfo->tableqinfoGroupInfo.numOfTables, pQuery->rec.total);
+  } else {
+    qDebug("QInfo:%p query paused, %" PRId64 " rows returned, numOfTotal:%" PRId64 " rows",
+           pQInfo, pQuery->rec.rows, pQuery->rec.total + pQuery->rec.rows);
+  }
+
   sem_post(&pQInfo->dataReady);
   qDestroyQueryInfo(pQInfo);
 }

src/query/src/qast.c

@@ -1173,9 +1173,7 @@ tExprNode* exprTreeFromTableName(const char* tbnameCond) {
       size_t len = strlen(cond) + VARSTR_HEADER_SIZE;
       
       char* p = exception_malloc(len);
-      varDataSetLen(p, len - VARSTR_HEADER_SIZE);
+      STR_WITH_SIZE_TO_VARSTR(p, cond, len - VARSTR_HEADER_SIZE);
-      memcpy(varDataVal(p), cond, len);
-      
       taosArrayPush(pVal->arr, &p);
     }
 

src/query/src/qparserImpl.c

@@ -15,16 +15,16 @@
 
 #include "os.h"
 #include "qsqlparser.h"
+#include "queryLog.h"
 #include "taosdef.h"
 #include "taosmsg.h"
+#include "tcmdtype.h"
 #include "tglobal.h"
 #include "tstoken.h"
+#include "tstrbuild.h"
 #include "ttime.h"
 #include "ttokendef.h"
 #include "tutil.h"
-#include "qsqltype.h"
-#include "tstrbuild.h"
-#include "queryLog.h"
 
 SSqlInfo qSQLParse(const char *pStr) {
   void *pParser = ParseAlloc(malloc);

src/query/src/sql.c

@@ -25,17 +25,17 @@
 #include <stdio.h>
 /************ Begin %include sections from the grammar ************************/
 
+#include <assert.h>
+#include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
-#include <assert.h>
-#include <stdbool.h>
-#include "tutil.h"
 #include "qsqlparser.h"
+#include "tcmdtype.h"
 #include "tstoken.h"
-#include "tvariant.h"
 #include "ttokendef.h"
-#include "qsqltype.h"
+#include "tutil.h"
+#include "tvariant.h"
 /**************** End of %include directives **********************************/
 /* These constants specify the various numeric values for terminal symbols
 ** in a format understandable to "makeheaders".  This section is blank unless

src/tsdb/src/tsdbMeta.c

@@ -255,17 +255,46 @@ _err:
   return NULL;
 }
 
+static int32_t colIdCompar(const void* left, const void* right) {
+  int16_t colId = *(int16_t*) left;
+  STColumn* p2 = (STColumn*) right;
+
+  if (colId == p2->colId) {
+    return 0;
+  }
+
+  return (colId < p2->colId)? -1:1;
+}
+
 int tsdbUpdateTagValue(TSDB_REPO_T *repo, SUpdateTableTagValMsg *pMsg) {
   STsdbRepo *pRepo = (STsdbRepo *)repo;
   STsdbMeta *pMeta = pRepo->tsdbMeta;
-  int16_t    tversion = htons(pMsg->tversion);
 
-  STable *pTable = tsdbGetTableByUid(pMeta, htobe64(pMsg->uid));
+  pMsg->uid = htobe64(pMsg->uid);
+  pMsg->tid = htonl(pMsg->tid);
+  pMsg->tversion  = htons(pMsg->tversion);
+  pMsg->colId     = htons(pMsg->colId);
+  pMsg->tagValLen = htonl(pMsg->tagValLen);
+  pMsg->numOfTags = htons(pMsg->numOfTags);
+  pMsg->schemaLen = htonl(pMsg->schemaLen);
+  assert(pMsg->schemaLen == sizeof(STColumn) * pMsg->numOfTags);
+
+  char* d = pMsg->data;
+  for(int32_t i = 0; i < pMsg->numOfTags; ++i) {
+    STColumn* pCol = (STColumn*) d;
+    pCol->colId = htons(pCol->colId);
+    pCol->bytes = htons(pCol->bytes);
+    pCol->offset = 0;
+
+    d += sizeof(STColumn);
+  }
+
+  STable *pTable = tsdbGetTableByUid(pMeta, pMsg->uid);
   if (pTable == NULL) {
     terrno = TSDB_CODE_TDB_INVALID_TABLE_ID;
     return -1;
   }
-  if (TABLE_TID(pTable) != htonl(pMsg->tid)) {
+  if (TABLE_TID(pTable) != pMsg->tid) {
     terrno = TSDB_CODE_TDB_INVALID_TABLE_ID;
     return -1;
   }
@@ -277,10 +306,10 @@ int tsdbUpdateTagValue(TSDB_REPO_T *repo, SUpdateTableTagValMsg *pMsg) {
     return -1;
   }
 
-  if (schemaVersion(tsdbGetTableTagSchema(pTable)) < tversion) {
+  if (schemaVersion(tsdbGetTableTagSchema(pTable)) < pMsg->tversion) {
     tsdbDebug("vgId:%d server tag version %d is older than client tag version %d, try to config", REPO_ID(pRepo),
-              schemaVersion(tsdbGetTableTagSchema(pTable)), tversion);
+              schemaVersion(tsdbGetTableTagSchema(pTable)), pMsg->tversion);
-    void *msg = (*pRepo->appH.configFunc)(pRepo->config.tsdbId, htonl(pMsg->tid));
+    void *msg = (*pRepo->appH.configFunc)(pRepo->config.tsdbId, pMsg->tid);
     if (msg == NULL) return -1;
 
     // Deal with error her
@@ -299,19 +328,24 @@ int tsdbUpdateTagValue(TSDB_REPO_T *repo, SUpdateTableTagValMsg *pMsg) {
 
   STSchema *pTagSchema = tsdbGetTableTagSchema(pTable);
 
-  if (schemaVersion(pTagSchema) > tversion) {
+  if (schemaVersion(pTagSchema) > pMsg->tversion) {
     tsdbError(
         "vgId:%d failed to update tag value of table %s since version out of date, client tag version %d server tag "
         "version %d",
-        REPO_ID(pRepo), TABLE_CHAR_NAME(pTable), tversion, schemaVersion(pTable->tagSchema));
+        REPO_ID(pRepo), TABLE_CHAR_NAME(pTable), pMsg->tversion, schemaVersion(pTable->tagSchema));
     return TSDB_CODE_TDB_TAG_VER_OUT_OF_DATE;
   }
-  if (schemaColAt(pTagSchema, DEFAULT_TAG_INDEX_COLUMN)->colId == htons(pMsg->colId)) {
+  if (schemaColAt(pTagSchema, DEFAULT_TAG_INDEX_COLUMN)->colId == pMsg->colId) {
     tsdbRemoveTableFromIndex(pMeta, pTable);
   }
   // TODO: remove table from index if it is the first column of tag
-  tdSetKVRowDataOfCol(&pTable->tagVal, htons(pMsg->colId), htons(pMsg->type), pMsg->data);
+
-  if (schemaColAt(pTagSchema, DEFAULT_TAG_INDEX_COLUMN)->colId == htons(pMsg->colId)) {
+  // TODO: convert the tag schema from client, and then extract the type and bytes from schema according to colId
+  STColumn* res = bsearch(&pMsg->colId, pMsg->data, pMsg->numOfTags, sizeof(STColumn), colIdCompar);
+  assert(res != NULL);
+
+  tdSetKVRowDataOfCol(&pTable->tagVal, pMsg->colId, res->type, pMsg->data + pMsg->schemaLen);
+  if (schemaColAt(pTagSchema, DEFAULT_TAG_INDEX_COLUMN)->colId == pMsg->colId) {
     tsdbAddTableIntoIndex(pMeta, pTable);
   }
   return TSDB_CODE_SUCCESS;

src/tsdb/src/tsdbRead.c

@@ -74,9 +74,6 @@ typedef struct STableCheckInfo {
   SDataCols*    pDataCols;
   int32_t       chosen;         // indicate which iterator should move forward
   bool          initBuf;        // whether to initialize the in-memory skip list iterator or not
-  SMemTable*    mem;            // in-mem buffer, hold the ref count
-  SMemTable*    imem;           // imem buffer, hold the ref count to avoid release
-
   SSkipListIterator* iter;      // mem buffer skip list iterator
   SSkipListIterator* iiter;     // imem buffer skip list iterator
 } STableCheckInfo;
@@ -113,6 +110,8 @@ typedef struct STsdbQueryHandle {
   SFileGroupIter fileIter;
   SRWHelper      rhelper;
   STableBlockInfo* pDataBlockInfo;
+  SMemTable*     mem;              // mem-table
+  SMemTable*     imem;             // imem-table, acquired from snapshot
   
   SDataBlockLoadInfo dataBlockLoadInfo; /* record current block load information */
   SLoadCompBlockInfo compBlockLoadInfo; /* record current compblock information in SQuery */
@@ -138,9 +137,6 @@ static void tsdbInitCompBlockLoadInfo(SLoadCompBlockInfo* pCompBlockLoadInfo) {
 }
 
 TsdbQueryHandleT* tsdbQueryTables(TSDB_REPO_T* tsdb, STsdbQueryCond* pCond, STableGroupInfo* groupList, void* qinfo) {
-  // todo 1. filter not exist table
-  // todo 2. add the reference count for each table that is involved in query
-
   STsdbQueryHandle* pQueryHandle = calloc(1, sizeof(STsdbQueryHandle));
   pQueryHandle->order       = pCond->order;
   pQueryHandle->window      = pCond->twindow;
@@ -154,6 +150,7 @@ TsdbQueryHandleT* tsdbQueryTables(TSDB_REPO_T* tsdb, STsdbQueryCond* pCond, STab
   pQueryHandle->outputCapacity = ((STsdbRepo*)tsdb)->config.maxRowsPerFileBlock;
   
   tsdbInitReadHelper(&pQueryHandle->rhelper, (STsdbRepo*) tsdb);
+  tsdbTakeMemSnapshot(pQueryHandle->pTsdb, &pQueryHandle->mem, &pQueryHandle->imem);
 
   size_t sizeOfGroup = taosArrayGetSize(groupList->pGroupList);
   assert(sizeOfGroup >= 1 && pCond != NULL && pCond->numOfCols > 0);
@@ -252,22 +249,22 @@ static bool initTableMemIterator(STsdbQueryHandle* pHandle, STableCheckInfo* pCh
   pCheckInfo->initBuf = true;
   int32_t order = pHandle->order;
 
-  tsdbTakeMemSnapshot(pHandle->pTsdb, &pCheckInfo->mem, &pCheckInfo->imem);
+//  tsdbTakeMemSnapshot(pHandle->pTsdb, &pCheckInfo->mem, &pCheckInfo->imem);
 
   // no data in buffer, abort
-  if (pCheckInfo->mem == NULL && pCheckInfo->imem == NULL) {
+  if (pHandle->mem == NULL && pHandle->imem == NULL) {
     return false;
   }
   
   assert(pCheckInfo->iter == NULL && pCheckInfo->iiter == NULL);
   
-  if (pCheckInfo->mem && pCheckInfo->mem->tData[pCheckInfo->tableId.tid] != NULL) {
+  if (pHandle->mem && pHandle->mem->tData[pCheckInfo->tableId.tid] != NULL) {
-    pCheckInfo->iter = tSkipListCreateIterFromVal(pCheckInfo->mem->tData[pCheckInfo->tableId.tid]->pData,
+    pCheckInfo->iter = tSkipListCreateIterFromVal(pHandle->mem->tData[pCheckInfo->tableId.tid]->pData,
         (const char*) &pCheckInfo->lastKey, TSDB_DATA_TYPE_TIMESTAMP, order);
   }
   
-  if (pCheckInfo->imem && pCheckInfo->imem->tData[pCheckInfo->tableId.tid] != NULL) {
+  if (pHandle->imem && pHandle->imem->tData[pCheckInfo->tableId.tid] != NULL) {
-    pCheckInfo->iiter = tSkipListCreateIterFromVal(pCheckInfo->imem->tData[pCheckInfo->tableId.tid]->pData,
+    pCheckInfo->iiter = tSkipListCreateIterFromVal(pHandle->imem->tData[pCheckInfo->tableId.tid]->pData,
         (const char*) &pCheckInfo->lastKey, TSDB_DATA_TYPE_TIMESTAMP, order);
   }
   
@@ -1518,6 +1515,7 @@ bool tsdbNextDataBlock(TsdbQueryHandleT* pHandle) {
       pSecQueryHandle->outputCapacity = ((STsdbRepo*)pSecQueryHandle->pTsdb)->config.maxRowsPerFileBlock;
   
       tsdbInitReadHelper(&pSecQueryHandle->rhelper, (STsdbRepo*) pSecQueryHandle->pTsdb);
+      tsdbTakeMemSnapshot(pSecQueryHandle->pTsdb, &pSecQueryHandle->mem, &pSecQueryHandle->imem);
 
       // allocate buffer in order to load data blocks from file
       int32_t numOfCols = QH_GET_NUM_OF_COLS(pQueryHandle);
@@ -2319,9 +2317,6 @@ void tsdbCleanupQueryHandle(TsdbQueryHandleT queryHandle) {
     STableCheckInfo* pTableCheckInfo = taosArrayGet(pQueryHandle->pTableCheckInfo, i);
     tSkipListDestroyIter(pTableCheckInfo->iter);
 
-    tsdbUnRefMemTable(pQueryHandle->pTsdb, pTableCheckInfo->mem);
-    tsdbUnRefMemTable(pQueryHandle->pTsdb, pTableCheckInfo->imem);
-
     if (pTableCheckInfo->pDataCols != NULL) {
       tfree(pTableCheckInfo->pDataCols->buf);
     }
@@ -2342,8 +2337,11 @@ void tsdbCleanupQueryHandle(TsdbQueryHandleT queryHandle) {
   tfree(pQueryHandle->pDataBlockInfo);
   tfree(pQueryHandle->statis);
 
-  tsdbDestroyHelper(&pQueryHandle->rhelper);
+  // todo check error
+  tsdbUnRefMemTable(pQueryHandle->pTsdb, pQueryHandle->mem);
+  tsdbUnRefMemTable(pQueryHandle->pTsdb, pQueryHandle->imem);
 
+  tsdbDestroyHelper(&pQueryHandle->rhelper);
   tfree(pQueryHandle);
 }
 

src/util/inc/tcache.h

@@ -65,6 +65,7 @@ typedef struct {
   int64_t         totalSize;          // total allocated buffer in this hash table, SCacheObj is not included.
   int64_t         refreshTime;
   STrashElem *    pTrash;
+  const char *    cacheName;
 //  void *          tmrCtrl;
 //  void *          pTimer;
   SCacheStatis    statistics;
@@ -90,7 +91,7 @@ typedef struct {
  * @param fn                   free resource callback function
  * @return
  */
-SCacheObj *taosCacheInit(int32_t keyType, int64_t refreshTimeInSeconds, bool extendLifespan, __cache_freeres_fn_t fn);
+SCacheObj *taosCacheInit(int32_t keyType, int64_t refreshTimeInSeconds, bool extendLifespan, __cache_freeres_fn_t fn, const char *cacheName);
 
 /**
  * initialize the cache object and set the free object callback function
@@ -98,7 +99,7 @@ SCacheObj *taosCacheInit(int32_t keyType, int64_t refreshTimeInSeconds, bool ext
  * @param freeCb
  * @return
  */
-SCacheObj *taosCacheInitWithCb(int32_t keyType, int64_t refreshTimeInSeconds, bool extendLifespan, __cache_freeres_fn_t fn);
+SCacheObj *taosCacheInitWithCb(int32_t keyType, int64_t refreshTimeInSeconds, bool extendLifespan, __cache_freeres_fn_t fn, const char *cacheName);
 
 /**
  * add data into cache
@@ -128,7 +129,7 @@ void *taosCacheAcquireByKey(SCacheObj *pCacheObj, const void *key, size_t keyLen
  * @param expireTime    new expire time of data
  * @return
  */ 
-void* taosCacheUpdateExpireTimeByName(SCacheObj *pCacheObj, const char *key, size_t keyLen, uint64_t expireTime);
+void* taosCacheUpdateExpireTimeByName(SCacheObj *pCacheObj, void *key, size_t keyLen, uint64_t expireTime);
 
 /**
  * Add one reference count for the exist data, and assign this data for a new owner.

src/util/src/tcache.c

@@ -119,7 +119,9 @@ static FORCE_INLINE void taosCacheReleaseNode(SCacheObj *pCacheObj, SCacheDataNo
   int32_t size = pNode->size;
   taosHashRemove(pCacheObj->pHashTable, pNode->key, pNode->keySize);
 
-  uDebug("key:%p, is removed from cache,total:%" PRId64 ",size:%dbytes", pNode->key, pCacheObj->totalSize, size);
+  uDebug("key:%p, %p is destroyed from cache, totalNum:%d totalSize:%" PRId64 "bytes size:%dbytes, cacheName:%s",
+         pNode->key, pNode->data, (int32_t)taosHashGetSize(pCacheObj->pHashTable), pCacheObj->totalSize, size,
+         pCacheObj->cacheName);
   if (pCacheObj->freeFp) pCacheObj->freeFp(pNode->data);
   free(pNode);
 }
@@ -224,7 +226,7 @@ static void doCleanupDataCache(SCacheObj *pCacheObj);
  */
 static void* taosCacheRefresh(void *handle);
 
-SCacheObj *taosCacheInitWithCb(int32_t keyType, int64_t refreshTimeInSeconds, bool extendLifespan, __cache_freeres_fn_t fn) {
+SCacheObj *taosCacheInitWithCb(int32_t keyType, int64_t refreshTimeInSeconds, bool extendLifespan, __cache_freeres_fn_t fn, const char* cacheName) {
   if (refreshTimeInSeconds <= 0) {
     return NULL;
   }
@@ -236,6 +238,7 @@ SCacheObj *taosCacheInitWithCb(int32_t keyType, int64_t refreshTimeInSeconds, bo
   }
   
   pCacheObj->pHashTable = taosHashInit(128, taosGetDefaultHashFunction(keyType), false);
+  pCacheObj->cacheName = cacheName;
   if (pCacheObj->pHashTable == NULL) {
     free(pCacheObj);
     uError("failed to allocate memory, reason:%s", strerror(errno));
@@ -265,8 +268,8 @@ SCacheObj *taosCacheInitWithCb(int32_t keyType, int64_t refreshTimeInSeconds, bo
   return pCacheObj;
 }
 
-SCacheObj *taosCacheInit(int32_t keyType, int64_t refreshTimeInSeconds, bool extendLifespan, __cache_freeres_fn_t fn) {
+SCacheObj *taosCacheInit(int32_t keyType, int64_t refreshTimeInSeconds, bool extendLifespan, __cache_freeres_fn_t fn, const char* cacheName) {
-  return taosCacheInitWithCb(keyType, refreshTimeInSeconds, extendLifespan, fn);
+  return taosCacheInitWithCb(keyType, refreshTimeInSeconds, extendLifespan, fn, cacheName);
 }
 
 void *taosCachePut(SCacheObj *pCacheObj, const void *key, size_t keyLen, const void *pData, size_t dataSize, int duration) {
@@ -285,14 +288,16 @@ void *taosCachePut(SCacheObj *pCacheObj, const void *key, size_t keyLen, const v
     if (NULL != pNode) {
       pCacheObj->totalSize += pNode->size;
 
-      uDebug("key:%p, %p added into cache, added:%" PRIu64 ", expire:%" PRIu64 ", total:%" PRId64 ", size:%" PRId64 " bytes",
+      uDebug("key:%p, %p added into cache, added:%" PRIu64 ", expire:%" PRIu64 ", totalNum:%d totalSize:%" PRId64
-             key, pNode, pNode->addedTime, (pNode->lifespan * pNode->extendFactor + pNode->addedTime), pCacheObj->totalSize, dataSize);
+             "bytes size:%" PRId64 "bytes, cacheName:%s",
+             key, pNode->data, pNode->addedTime, (pNode->lifespan * pNode->extendFactor + pNode->addedTime),
+             (int32_t)taosHashGetSize(pCacheObj->pHashTable), pCacheObj->totalSize, dataSize, pCacheObj->cacheName);
     } else {
-      uError("key:%p, failed to added into cache, out of memory", key);
+      uError("key:%p, failed to added into cache, out of memory, cacheName:%s", key, pCacheObj->cacheName);
     }
   } else {  // old data exists, update the node
     pNode = taosUpdateCacheImpl(pCacheObj, pOld, key, keyLen, pData, dataSize, duration * 1000L);
-    uDebug("key:%p, %p exist in cache, updated", key, pNode);
+    uDebug("key:%p, %p exist in cache, updated, cacheName:%s", key, pNode->data, pCacheObj->cacheName);
   }
 
   __cache_unlock(pCacheObj);
@@ -327,17 +332,17 @@ void *taosCacheAcquireByKey(SCacheObj *pCacheObj, const void *key, size_t keyLen
   
   if (ptNode != NULL) {
     atomic_add_fetch_32(&pCacheObj->statistics.hitCount, 1);
-    uDebug("key:%p, is retrieved from cache, %p refcnt:%d", key, (*ptNode), ref);
+    uDebug("key:%p, %p is retrieved from cache, refcnt:%d, cacheName:%s", key, (*ptNode)->data, ref, pCacheObj->cacheName);
   } else {
     atomic_add_fetch_32(&pCacheObj->statistics.missCount, 1);
-    uDebug("key:%p, not in cache, retrieved failed", key);
+    uDebug("key:%p, not in cache, retrieved failed, cacheName:%s", key, pCacheObj->cacheName);
   }
   
   atomic_add_fetch_32(&pCacheObj->statistics.totalAccess, 1);
   return (ptNode != NULL) ? (*ptNode)->data : NULL;
 }
 
-void* taosCacheUpdateExpireTimeByName(SCacheObj *pCacheObj, const char *key, size_t keyLen, uint64_t expireTime) {
+void* taosCacheUpdateExpireTimeByName(SCacheObj *pCacheObj, void *key, size_t keyLen, uint64_t expireTime) {
   if (pCacheObj == NULL || taosHashGetSize(pCacheObj->pHashTable) == 0) {
     return NULL;
   }
@@ -355,10 +360,11 @@ void* taosCacheUpdateExpireTimeByName(SCacheObj *pCacheObj, const char *key, siz
 
   if (ptNode != NULL) {
     atomic_add_fetch_32(&pCacheObj->statistics.hitCount, 1);
-    uDebug("key:%p, expireTime is updated in cache, %p refcnt:%d", key, (*ptNode), T_REF_VAL_GET(*ptNode));
+    uDebug("key:%p, %p expireTime is updated in cache, refcnt:%d, cacheName:%s", key, (*ptNode)->data,
+           T_REF_VAL_GET(*ptNode), pCacheObj->cacheName);
   } else {
     atomic_add_fetch_32(&pCacheObj->statistics.missCount, 1);
-    uDebug("key:%p, not in cache, retrieved failed", key);
+    uDebug("key:%p, not in cache, retrieved failed, cacheName:%s", key, pCacheObj->cacheName);
   }
 
   atomic_add_fetch_32(&pCacheObj->statistics.totalAccess, 1);
@@ -377,7 +383,7 @@ void *taosCacheAcquireByData(SCacheObj *pCacheObj, void *data) {
   }
 
   int32_t ref = T_REF_INC(ptNode);
-  uDebug("%p acquired by data in cache, refcnt:%d", ptNode, ref)
+  uDebug("%p acquired by data in cache, refcnt:%d, cacheName:%s", ptNode->data, ref, pCacheObj->cacheName);
 
   // if the remained life span is less then the (*ptNode)->lifeSpan, add up one lifespan
   if (pCacheObj->extendLifespan) {
@@ -385,7 +391,8 @@ void *taosCacheAcquireByData(SCacheObj *pCacheObj, void *data) {
 
     if ((now - ptNode->addedTime) < ptNode->lifespan * ptNode->extendFactor) {
       ptNode->extendFactor += 1;
-      uDebug("key:%p extend life time to %"PRId64, ptNode, ptNode->lifespan * ptNode->extendFactor + ptNode->addedTime);
+      uDebug("%p extend life time to %" PRId64, ptNode->data,
+             ptNode->lifespan * ptNode->extendFactor + ptNode->addedTime);
     }
   }
 
@@ -424,13 +431,13 @@ void taosCacheRelease(SCacheObj *pCacheObj, void **data, bool _remove) {
   
   SCacheDataNode *pNode = (SCacheDataNode *)((char *)(*data) - offset);
   if (pNode->signature != (uint64_t)pNode) {
-    uError("key:%p, release invalid cache data", pNode);
+    uError("%p, release invalid cache data", pNode);
     return;
   }
 
   *data = NULL;
   int16_t ref = T_REF_DEC(pNode);
-  uDebug("%p data released, refcnt:%d", pNode, ref);
+  uDebug("key:%p, %p is released, refcnt:%d, cacheName:%s", pNode->key, pNode->data, ref, pCacheObj->cacheName);
 
   if (_remove && (!pNode->inTrashCan)) {
     __cache_wr_lock(pCacheObj);
@@ -474,6 +481,7 @@ void taosCacheCleanup(SCacheObj *pCacheObj) {
   pCacheObj->deleting = 1;
   pthread_join(pCacheObj->refreshWorker, NULL);
 
+  uInfo("cacheName:%p, will be cleanuped", pCacheObj->cacheName);
   doCleanupDataCache(pCacheObj);
 }
 
@@ -522,7 +530,7 @@ void taosAddToTrash(SCacheObj *pCacheObj, SCacheDataNode *pNode) {
   pNode->inTrashCan = true;
   pCacheObj->numOfElemsInTrash++;
 
-  uDebug("key:%p, %p move to trash, numOfElem in trash:%d", pNode->key, pNode, pCacheObj->numOfElemsInTrash);
+  uDebug("key:%p, %p move to trash, numOfElem in trash:%d", pNode->key, pNode->data, pCacheObj->numOfElemsInTrash);
 }
 
 void taosRemoveFromTrashCan(SCacheObj *pCacheObj, STrashElem *pElem) {
@@ -547,7 +555,6 @@ void taosRemoveFromTrashCan(SCacheObj *pCacheObj, STrashElem *pElem) {
     pCacheObj->freeFp(pElem->pData->data);
   }
 
-  uError("-------------------free obj:%p", pElem->pData);
   free(pElem->pData);
   free(pElem);
 }
@@ -574,7 +581,7 @@ void taosTrashCanEmpty(SCacheObj *pCacheObj, bool force) {
     }
 
     if (force || (T_REF_VAL_GET(pElem->pData) == 0)) {
-      uDebug("key:%p, %p removed from trash. numOfElem in trash:%d", pElem->pData->key, pElem->pData,
+      uDebug("key:%p, %p removed from trash. numOfElem in trash:%d", pElem->pData->key, pElem->pData->data,
              pCacheObj->numOfElemsInTrash - 1);
       STrashElem *p = pElem;
 
@@ -598,7 +605,8 @@ void doCleanupDataCache(SCacheObj *pCacheObj) {
     if (T_REF_VAL_GET(pNode) <= 0) {
       taosCacheReleaseNode(pCacheObj, pNode);
     } else {
-      uDebug("key:%p, will not remove from cache, refcnt:%d", pNode->key, T_REF_VAL_GET(pNode));
+      uDebug("key:%p, %p will not remove from cache, refcnt:%d, cacheName:%s", pNode->key, pNode->data,
+             T_REF_VAL_GET(pNode), pCacheObj->cacheName);
     }
   }
   taosHashDestroyIter(pIter);

src/util/tests/cacheTest.cpp

@@ -19,7 +19,7 @@ int32_t tsMaxMeterConnections = 200;
 // test cache
 TEST(testCase, client_cache_test) {
   const int32_t REFRESH_TIME_IN_SEC = 2;
-  SCacheObj* tscCacheHandle = taosCacheInit(TSDB_DATA_TYPE_BINARY, REFRESH_TIME_IN_SEC, 0, NULL);
+  SCacheObj* tscCacheHandle = taosCacheInit(TSDB_DATA_TYPE_BINARY, REFRESH_TIME_IN_SEC, 0, NULL, "test");
 
   const char* key1 = "test1";
   char data1[] = "test11";
@@ -105,7 +105,7 @@ TEST(testCase, client_cache_test) {
 
 TEST(testCase, cache_resize_test) {
   const int32_t REFRESH_TIME_IN_SEC = 2;
-  auto* pCache = taosCacheInit(TSDB_DATA_TYPE_BINARY, REFRESH_TIME_IN_SEC, false, NULL);
+  auto* pCache = taosCacheInit(TSDB_DATA_TYPE_BINARY, REFRESH_TIME_IN_SEC, false, NULL, "test");
 
   char key[256] = {0};
   char data[1024] = "abcdefghijk";

src/vnode/src/vnodeMain.c

@@ -284,7 +284,7 @@ int32_t vnodeOpen(int32_t vnode, char *rootDir) {
     cqStart(pVnode->cq);
 
   const int32_t REFRESH_HANDLE_INTERVAL = 2; // every 2 seconds, rfresh handle pool
-  pVnode->qHandlePool = taosCacheInit(TSDB_DATA_TYPE_BIGINT, REFRESH_HANDLE_INTERVAL, true,  vnodeFreeqHandle);
+  pVnode->qHandlePool = taosCacheInit(TSDB_DATA_TYPE_BIGINT, REFRESH_HANDLE_INTERVAL, true,  vnodeFreeqHandle, "qhandle");
 
   pVnode->events = NULL;
   pVnode->status = TAOS_VN_STATUS_READY;
@@ -324,7 +324,7 @@ void vnodeRelease(void *pVnodeRaw) {
   assert(refCount >= 0);
 
   if (refCount > 0) {
-    vTrace("vgId:%d, release vnode, refCount:%d", vgId, refCount);
+    vDebug("vgId:%d, release vnode, refCount:%d", vgId, refCount);
     return;
   }
 
@@ -388,7 +388,7 @@ void *vnodeAccquireVnode(int32_t vgId) {
   if (pVnode == NULL) return pVnode;
 
   atomic_add_fetch_32(&pVnode->refCount, 1);
-  vTrace("vgId:%d, get vnode, refCount:%d", pVnode->vgId, pVnode->refCount);
+  vDebug("vgId:%d, get vnode, refCount:%d", pVnode->vgId, pVnode->refCount);
 
   return pVnode;
 }
@@ -466,6 +466,7 @@ static void vnodeCleanUp(SVnodeObj *pVnode) {
   vTrace("vgId:%d, vnode will cleanup, refCount:%d", pVnode->vgId, pVnode->refCount);
 
   // release local resources only after cutting off outside connections
+  taosCacheCleanup(pVnode->qHandlePool);
   vnodeRelease(pVnode);
 }
 

src/vnode/src/vnodeRead.c

@@ -78,15 +78,14 @@ static int32_t vnodeProcessQueryMsg(SVnodeObj *pVnode, SReadMsg *pReadMsg) {
 
     // this message arrived here by means of the *query* message, so release the vnode is necessary
     void** qhandle = taosCacheAcquireByKey(pVnode->qHandlePool, (void*) &killQueryMsg->qhandle, sizeof(killQueryMsg->qhandle));
-    if (qhandle == NULL || *qhandle == NULL) {  // todo handle invalid qhandle error
+    if (qhandle == NULL || *qhandle == NULL) {
-
+      vWarn("QInfo:%p invalid qhandle, no matched query handle, conn:%p", (void*) killQueryMsg->qhandle, pReadMsg->rpcMsg.handle);
     } else {
-//      qKillQuery((qinfo_t) killQueryMsg->qhandle);
       taosCacheRelease(pVnode->qHandlePool, (void**) &qhandle, true);
     }
 
     vnodeRelease(pVnode);
-    return TSDB_CODE_TSC_QUERY_CANCELLED; // todo change the error code
+    return TSDB_CODE_TSC_QUERY_CANCELLED;
   }
 
   int32_t code = TSDB_CODE_SUCCESS;
@@ -97,8 +96,8 @@ static int32_t vnodeProcessQueryMsg(SVnodeObj *pVnode, SReadMsg *pReadMsg) {
     code = qCreateQueryInfo(pVnode->tsdb, pVnode->vgId, pQueryTableMsg, pVnode, vnodeRelease, &pQInfo);
 
     SQueryTableRsp *pRsp = (SQueryTableRsp *) rpcMallocCont(sizeof(SQueryTableRsp));
-    pRsp->qhandle = htobe64((uint64_t) (pQInfo));
     pRsp->code    = code;
+    pRsp->qhandle = 0;
 
     pRet->len = sizeof(SQueryTableRsp);
     pRet->rsp = pRsp;
@@ -120,6 +119,7 @@ static int32_t vnodeProcessQueryMsg(SVnodeObj *pVnode, SReadMsg *pReadMsg) {
 
       handle = taosCachePut(pVnode->qHandlePool, pQInfo, sizeof(pQInfo), &pQInfo, sizeof(pQInfo), tsShellActivityTimer * 2);
       assert(*handle == pQInfo);
+      pRsp->qhandle = htobe64((uint64_t) (handle));
     } else {
       assert(pQInfo == NULL);
       vnodeRelease(pVnode);
@@ -128,13 +128,17 @@ static int32_t vnodeProcessQueryMsg(SVnodeObj *pVnode, SReadMsg *pReadMsg) {
     vDebug("vgId:%d, QInfo:%p, dnode query msg disposed", pVnode->vgId, pQInfo);
   } else {
     assert(pCont != NULL);
-    pQInfo = pCont;
+    pQInfo = *(void**)(pCont);
+    handle = pCont;
     code = TSDB_CODE_VND_ACTION_IN_PROGRESS;
+
     vDebug("vgId:%d, QInfo:%p, dnode query msg in progress", pVnode->vgId, pQInfo);
   }
 
   if (pQInfo != NULL) {
-    qTableQuery(pQInfo, vnodeRelease, pVnode); // do execute query
+    qTableQuery(pQInfo); // do execute query
+
+    assert(handle != NULL);
     taosCacheRelease(pVnode->qHandlePool, (void**) &handle, false);
   }
 
@@ -146,23 +150,24 @@ static int32_t vnodeProcessFetchMsg(SVnodeObj *pVnode, SReadMsg *pReadMsg) {
   SRspRet *pRet = &pReadMsg->rspRet;
 
   SRetrieveTableMsg *pRetrieve = pCont;
-  void *pQInfo = (void*) htobe64(pRetrieve->qhandle);
+  void **pQInfo = (void*) htobe64(pRetrieve->qhandle);
   pRetrieve->free = htons(pRetrieve->free);
 
+  vDebug("vgId:%d, QInfo:%p, retrieve msg is disposed", pVnode->vgId, *pQInfo);
+
   memset(pRet, 0, sizeof(SRspRet));
   int32_t ret = 0;
 
-  void** handle = taosCacheAcquireByKey(pVnode->qHandlePool, &pQInfo, sizeof(pQInfo));
+  void** handle = taosCacheAcquireByKey(pVnode->qHandlePool, pQInfo, sizeof(pQInfo));
-  if (handle == NULL || *handle != pQInfo) {
+  if (handle == NULL || handle != pQInfo) {
     ret = TSDB_CODE_QRY_INVALID_QHANDLE;
   }
 
   if (pRetrieve->free == 1) {
+    if (ret == TSDB_CODE_SUCCESS) {
       vDebug("vgId:%d, QInfo:%p, retrieve msg received to kill query and free qhandle", pVnode->vgId, pQInfo);
 
-    taosCacheRelease(pVnode->qHandlePool, handle, true);
+      taosCacheRelease(pVnode->qHandlePool, (void**) &handle, true);
-//    int32_t ret = qKillQuery(pQInfo);
-
       pRet->rsp = (SRetrieveTableRsp *)rpcMallocCont(sizeof(SRetrieveTableRsp));
       pRet->len = sizeof(SRetrieveTableRsp);
 
@@ -171,27 +176,28 @@ static int32_t vnodeProcessFetchMsg(SVnodeObj *pVnode, SReadMsg *pReadMsg) {
       pRsp->numOfRows = 0;
       pRsp->completed = true;
       pRsp->useconds  = 0;
+    } else { // todo handle error
 
+    }
     return ret;
   }
 
-  vDebug("vgId:%d, QInfo:%p, retrieve msg is received", pVnode->vgId, pQInfo);
+  vDebug("vgId:%d, QInfo:%p, retrieve msg is received", pVnode->vgId, *pQInfo);
 
-  int32_t code = qRetrieveQueryResultInfo(pQInfo);
+  int32_t code = qRetrieveQueryResultInfo(*pQInfo);
   if (code != TSDB_CODE_SUCCESS) {
     //TODO
     pRet->rsp = (SRetrieveTableRsp *)rpcMallocCont(sizeof(SRetrieveTableRsp));
     memset(pRet->rsp, 0, sizeof(SRetrieveTableRsp));
   } else {
     // todo check code and handle error in build result set
-    code = qDumpRetrieveResult(pQInfo, (SRetrieveTableRsp **)&pRet->rsp, &pRet->len);
+    code = qDumpRetrieveResult(*pQInfo, (SRetrieveTableRsp **)&pRet->rsp, &pRet->len);
 
-    if (qHasMoreResultsToRetrieve(pQInfo)) {
+    if (qHasMoreResultsToRetrieve(*pQInfo)) {
-      pRet->qhandle = pQInfo;
+      pRet->qhandle = handle;
       code = TSDB_CODE_VND_ACTION_NEED_REPROCESSED;
     } else { // no further execution invoked, release the ref to vnode
       taosCacheRelease(pVnode->qHandlePool, (void**) &handle, true);
-//      qDestroyQueryInfo(pQInfo);
     }
   }
   

tests/pytest/query/queryMetaPerformace.py

@@ -0,0 +1,149 @@
+
+###################################################################
+#           Copyright (c) 2016 by TAOS Technologies, Inc.
+#                     All rights reserved.
+#
+#  This file is proprietary and confidential to TAOS Technologies.
+#  No part of this file may be reproduced, stored, transmitted,
+#  disclosed or used in any form or by any means other than as
+#  expressly provided by the written permission from Jianhui Tao
+#
+###################################################################
+
+# -*- coding: utf-8 -*-
+
+import sys
+import taos
+import threading
+import time
+from datetime import datetime
+import numpy as np
+
+class MyThread(threading.Thread):
+
+    def __init__(self, func, args=()):
+        super(MyThread, self).__init__()
+        self.func = func
+        self.args = args
+
+    def run(self):
+        self.result = self.func(*self.args)
+
+    def get_result(self):
+        try:
+            return self.result   # 如果子线程不使用join方法，此处可能会报没有self.result的错误
+        except Exception:
+            return None
+
+class MetadataQuery:
+    def initConnection(self):
+        self.tables = 100
+        self.records = 10
+        self.numOfTherads =5 
+        self.ts = 1537146000000
+        self.host = "127.0.0.1"
+        self.user = "root"
+        self.password = "taosdata"
+        self.config = "/etc/taos"
+        self.conn = taos.connect( self.host, self.user, self.password, self.config)
+    def connectDB(self):
+        return self.conn.cursor()
+
+    def createStable(self):
+        print("================= Create stable meters =================")
+        cursor = self.connectDB()
+        cursor.execute("drop database if exists test")
+        cursor.execute("create database test")
+        cursor.execute("use test")
+        cursor.execute('''create table if not exists meters (ts timestamp, speed int) tags(
+                    tgcol1 tinyint, tgcol2 smallint, tgcol3 int, tgcol4 bigint, tgcol5 float, tgcol6 double, tgcol7 bool, tgcol8 binary(20), tgcol9 nchar(20),
+                    tgcol10 tinyint, tgcol11 smallint, tgcol12 int, tgcol13 bigint, tgcol14 float, tgcol15 double, tgcol16 bool, tgcol17 binary(20), tgcol18 nchar(20),
+                    tgcol19 tinyint, tgcol20 smallint, tgcol21 int, tgcol22 bigint, tgcol23 float, tgcol24 double, tgcol25 bool, tgcol26 binary(20), tgcol27 nchar(20),
+                    tgcol28 tinyint, tgcol29 smallint, tgcol30 int, tgcol31 bigint, tgcol32 float, tgcol33 double, tgcol34 bool, tgcol35 binary(20), tgcol36 nchar(20),
+                    tgcol37 tinyint, tgcol38 smallint, tgcol39 int, tgcol40 bigint, tgcol41 float, tgcol42 double, tgcol43 bool, tgcol44 binary(20), tgcol45 nchar(20),
+                    tgcol46 tinyint, tgcol47 smallint, tgcol48 int, tgcol49 bigint, tgcol50 float, tgcol51 double, tgcol52 bool, tgcol53 binary(20), tgcol54 nchar(20))''')
+        cursor.close()
+
+    def createTablesAndInsertData(self, threadID):
+        cursor = self.connectDB()
+        cursor.execute("use test")
+        base = threadID * self.tables
+
+        tablesPerThread = int (self.tables / self.numOfTherads)
+        for i in range(tablesPerThread):
+            cursor.execute(
+                '''create table t%d using meters tags(
+                %d, %d, %d, %d, %f, %f, %d, 'taosdata%d', '涛思数据%d',
+                %d, %d, %d, %d, %f, %f, %d, 'taosdata%d', '涛思数据%d',
+                %d, %d, %d, %d, %f, %f, %d, 'taosdata%d', '涛思数据%d',
+                %d, %d, %d, %d, %f, %f, %d, 'taosdata%d', '涛思数据%d',
+                %d, %d, %d, %d, %f, %f, %d, 'taosdata%d', '涛思数据%d',
+                %d, %d, %d, %d, %f, %f, %d, 'taosdata%d', '涛思数据%d')''' %
+                (base + i + 1, 
+                (base + i) %100, (base + i) %10000, (base + i) %1000000, (base + i) %100000000, (base + i) %100 * 1.1, (base + i) %100 * 2.3, (base + i) %2, (base + i) %100, (base + i) %100, 
+                (base + i) %100, (base + i) %10000, (base + i) %1000000, (base + i) %100000000, (base + i) %100 * 1.1, (base + i) %100 * 2.3, (base + i) %2, (base + i) %100, (base + i) %100, 
+                (base + i) %100, (base + i) %10000, (base + i) %1000000, (base + i) %100000000, (base + i) %100 * 1.1, (base + i) %100 * 2.3, (base + i) %2, (base + i) %100, (base + i) %100, 
+                (base + i) %100, (base + i) %10000, (base + i) %1000000, (base + i) %100000000, (base + i) %100 * 1.1, (base + i) %100 * 2.3, (base + i) %2, (base + i) %100, (base + i) %100, 
+                (base + i) %100, (base + i) %10000, (base + i) %1000000, (base + i) %100000000, (base + i) %100 * 1.1, (base + i) %100 * 2.3, (base + i) %2, (base + i) %100, (base + i) %100, 
+                (base + i) %100, (base + i) %10000, (base + i) %1000000, (base + i) %100000000, (base + i) %100 * 1.1, (base + i) %100 * 2.3, (base + i) %2, (base + i) %100, (base + i) %100))
+            for j in range(self.records):
+                cursor.execute(
+                    "insert into t%d values(%d, %d)" %
+                    (base + i + 1, self.ts + j, j))
+        cursor.close()
+    def queryWithTagId(self, threadId, tagId, queryNum): 
+        print("---------thread%d start-----------"%threadId)
+        query = '''select tgcol1, tgcol2, tgcol3, tgcol4, tgcol5, tgcol6, tgcol7, tgcol8, tgcol9,
+                tgcol10, tgcol11, tgcol12, tgcol13, tgcol14, tgcol15, tgcol16, tgcol17, tgcol18,
+                tgcol19, tgcol20, tgcol21, tgcol22, tgcol23, tgcol24, tgcol25, tgcol26, tgcol27,
+                tgcol28, tgcol29, tgcol30, tgcol31, tgcol32, tgcol33, tgcol34, tgcol35, tgcol36,
+                tgcol37, tgcol38, tgcol39, tgcol40, tgcol41, tgcol42, tgcol43, tgcol44, tgcol45,
+                tgcol46, tgcol47, tgcol48, tgcol49, tgcol50, tgcol51, tgcol52, tgcol53, tgcol54
+                from meters where tgcol{id} > {condition}'''
+        latancy = []
+        cursor = self.connectDB()
+        cursor.execute("use test")
+        for i in range(queryNum): 
+            startTime = time.time()
+            cursor.execute(query.format(id = tagId, condition = i))
+            cursor.fetchall()
+            latancy.append((time.time() - startTime)) 
+        print("---------thread%d end-----------"%threadId)
+        return latancy
+    def queryData(self, query):
+        cursor = self.connectDB()
+        cursor.execute("use test")
+
+        print("================= query tag data =================")    
+        startTime = datetime.now()
+        cursor.execute(query)
+        cursor.fetchall()
+        endTime = datetime.now()
+        print(
+            "Query time for the above query is %d seconds" %
+            (endTime - startTime).seconds)
+
+        cursor.close()
+        #self.conn.close()
+
+
+if __name__ == '__main__':
+
+    t = MetadataQuery()
+    t.initConnection()
+
+    latancys = [] 
+    threads =  []
+    tagId = 1
+    queryNum = 1000 
+    for i in range(t.numOfTherads):
+        thread = MyThread(t.queryWithTagId, args = (i, tagId, queryNum))
+        threads.append(thread) 
+        thread.start()
+    for i in range(t.numOfTherads):  
+        threads[i].join()
+        latancys.extend(threads[i].get_result()) 
+    print("Total query: %d"%(queryNum * t.numOfTherads))    
+    print("statistic(s): mean= %f, P50 = %f, P75 = %f, P95 = %f, P99 = %f"
+            %(sum(latancys)/(queryNum * t.numOfTherads), np.percentile(latancys, 50), np.percentile(latancys, 75), np.percentile(latancys, 95), np.percentile(latancys, 99)))  
+

tests/script/sh/deploy.sh

@@ -114,6 +114,7 @@ echo "mDebugFlag          135"            >> $TAOS_CFG
 echo "sdbDebugFlag        135"            >> $TAOS_CFG
 echo "dDebugFlag          135"            >> $TAOS_CFG
 echo "vDebugFlag          135"            >> $TAOS_CFG
+echo "tsdbDebugFlag       135"            >> $TAOS_CFG
 echo "cDebugFlag          135"            >> $TAOS_CFG
 echo "jnidebugFlag        135"            >> $TAOS_CFG
 echo "odbcdebugFlag       135"            >> $TAOS_CFG