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fix: use slimit to indicate group for tag scan

This commit is contained in:
shenglian zhou 2023-04-24 15:48:20 +08:00
parent 057cc2d30d
commit 758427b3c4
3 changed files with 82 additions and 41 deletions
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1
source/libs/executor/inc/executorimpl.h
View File

@ -366,6 +366,7 @@ typedef struct STagScanInfo {
int32_t curPos;
SReadHandle readHandle;
STableListInfo* pTableListInfo;
SLimitNode* pSlimit;
} STagScanInfo;
typedef enum EStreamScanMode {

93
source/libs/executor/src/scanoperator.c
View File

@ -2512,6 +2512,53 @@ _error:
return NULL;
}
static void doTagScanOneTable(SOperatorInfo* pOperator, const SExecTaskInfo* pTaskInfo, STagScanInfo* pInfo,
const SExprInfo* pExprInfo, const SSDataBlock* pRes, int32_t size, const char* str,
int32_t* count, SMetaReader* mr) {
STableKeyInfo* item = tableListGetInfo(pInfo->pTableListInfo, pInfo->curPos);
int32_t code = metaGetTableEntryByUid(mr, item->uid);
tDecoderClear(&(*mr).coder);
if (code != TSDB_CODE_SUCCESS) {
qError("failed to get table meta, uid:0x%" PRIx64 ", code:%s, %s", item->uid, tstrerror(terrno),
GET_TASKID(pTaskInfo));
metaReaderClear(mr);
T_LONG_JMP(pTaskInfo->env, terrno);
}
for (int32_t j = 0; j < pOperator->exprSupp.numOfExprs; ++j) {
SColumnInfoData* pDst = taosArrayGet(pRes->pDataBlock, pExprInfo[j].base.resSchema.slotId);
// refactor later
if (fmIsScanPseudoColumnFunc(pExprInfo[j].pExpr->_function.functionId)) {
STR_TO_VARSTR(str, (*mr).me.name);
colDataSetVal(pDst, (*count), str, false);
} else { // it is a tag value
STagVal val = {0};
val.cid = pExprInfo[j].base.pParam[0].pCol->colId;
const char* p = metaGetTableTagVal((*mr).me.ctbEntry.pTags, pDst->info.type, &val);
char* data = NULL;
if (pDst->info.type != TSDB_DATA_TYPE_JSON && p != NULL) {
data = tTagValToData((const STagVal*)p, false);
} else {
data = (char*)p;
}
colDataSetVal(pDst, (*count), data,
(data == NULL) || (pDst->info.type == TSDB_DATA_TYPE_JSON && tTagIsJsonNull(data)));
if (pDst->info.type != TSDB_DATA_TYPE_JSON && p != NULL && IS_VAR_DATA_TYPE(((const STagVal*)p)->type) &&
data != NULL) {
taosMemoryFree(data);
}
}
}
(*count) += 1;
if (++pInfo->curPos >= size) {
setOperatorCompleted(pOperator);
}
}
static SSDataBlock* doTagScan(SOperatorInfo* pOperator) {
if (pOperator->status == OP_EXEC_DONE) {
return NULL;
@ -2536,47 +2583,10 @@ static SSDataBlock* doTagScan(SOperatorInfo* pOperator) {
metaReaderInit(&mr, pInfo->readHandle.meta, 0);
while (pInfo->curPos < size && count < pOperator->resultInfo.capacity) {
STableKeyInfo* item = tableListGetInfo(pInfo->pTableListInfo, pInfo->curPos);
int32_t code = metaGetTableEntryByUid(&mr, item->uid);
tDecoderClear(&mr.coder);
if (code != TSDB_CODE_SUCCESS) {
qError("failed to get table meta, uid:0x%" PRIx64 ", code:%s, %s", item->uid, tstrerror(terrno),
GET_TASKID(pTaskInfo));
metaReaderClear(&mr);
T_LONG_JMP(pTaskInfo->env, terrno);
}
for (int32_t j = 0; j < pOperator->exprSupp.numOfExprs; ++j) {
SColumnInfoData* pDst = taosArrayGet(pRes->pDataBlock, pExprInfo[j].base.resSchema.slotId);
// refactor later
if (fmIsScanPseudoColumnFunc(pExprInfo[j].pExpr->_function.functionId)) {
STR_TO_VARSTR(str, mr.me.name);
colDataSetVal(pDst, count, str, false);
} else { // it is a tag value
STagVal val = {0};
val.cid = pExprInfo[j].base.pParam[0].pCol->colId;
const char* p = metaGetTableTagVal(mr.me.ctbEntry.pTags, pDst->info.type, &val);
char* data = NULL;
if (pDst->info.type != TSDB_DATA_TYPE_JSON && p != NULL) {
data = tTagValToData((const STagVal*)p, false);
} else {
data = (char*)p;
}
colDataSetVal(pDst, count, data,
(data == NULL) || (pDst->info.type == TSDB_DATA_TYPE_JSON && tTagIsJsonNull(data)));
if (pDst->info.type != TSDB_DATA_TYPE_JSON && p != NULL && IS_VAR_DATA_TYPE(((const STagVal*)p)->type) &&
data != NULL) {
taosMemoryFree(data);
}
}
}
count += 1;
if (++pInfo->curPos >= size) {
setOperatorCompleted(pOperator);
doTagScanOneTable(pOperator, pTaskInfo, pInfo, pExprInfo, pRes, size, str, &count, &mr);
if (pInfo->pSlimit != NULL) {
pInfo->pRes->info.id.groupId = calcGroupId(mr.me.name, strlen(mr.me.name));
break;
}
}
@ -2628,6 +2638,7 @@ SOperatorInfo* createTagScanOperatorInfo(SReadHandle* pReadHandle, STagScanPhysi
pInfo->pRes = createDataBlockFromDescNode(pDescNode);
pInfo->readHandle = *pReadHandle;
pInfo->curPos = 0;
pInfo->pSlimit = (SLimitNode*)pPhyNode->node.pSlimit; //TODO: slimit now only indicate group
setOperatorInfo(pOperator, "TagScanOperator", QUERY_NODE_PHYSICAL_PLAN_TAG_SCAN, false, OP_NOT_OPENED, pInfo,
pTaskInfo);

29
source/libs/planner/src/planOptimizer.c
View File

@ -2418,6 +2418,34 @@ static bool tagScanOptShouldBeOptimized(SLogicNode* pNode) {
return true;
}
static SLogicNode* tagScanOptFindAncestorWithSlimit(SLogicNode* pTableScanNode) {
SLogicNode* pNode = pTableScanNode->pParent;
while (NULL != pNode) {
if (QUERY_NODE_LOGIC_PLAN_PARTITION == nodeType(pNode) || QUERY_NODE_LOGIC_PLAN_AGG == nodeType(pNode) ||
QUERY_NODE_LOGIC_PLAN_WINDOW == nodeType(pNode) || QUERY_NODE_LOGIC_PLAN_SORT == nodeType(pNode)) {
return NULL;
}
if (NULL != pNode->pSlimit) {
return pNode;
}
pNode = pNode->pParent;
}
return NULL;
}
static void tagScanOptCloneAncestorSlimit(SLogicNode* pTableScanNode) {
if (NULL != pTableScanNode->pSlimit) {
return;
}
SLogicNode* pNode = tagScanOptFindAncestorWithSlimit(pTableScanNode);
if (NULL != pNode) {
//TODO: only set the slimit now. push down slimit later
pTableScanNode->pSlimit = nodesCloneNode(pNode->pSlimit);
}
return;
}
static int32_t tagScanOptimize(SOptimizeContext* pCxt, SLogicSubplan* pLogicSubplan) {
SScanLogicNode* pScanNode = (SScanLogicNode*)optFindPossibleNode(pLogicSubplan->pNode, tagScanOptShouldBeOptimized);
if (NULL == pScanNode) {
@ -2458,6 +2486,7 @@ static int32_t tagScanOptimize(SOptimizeContext* pCxt, SLogicSubplan* pLogicSubp
NODES_CLEAR_LIST(pAgg->pChildren);
}
nodesDestroyNode((SNode*)pAgg);
tagScanOptCloneAncestorSlimit((SLogicNode*)pScanNode);
pCxt->optimized = true;
return TSDB_CODE_SUCCESS;
}