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enh(query): optimize the perf for ordinary table query with data in last file.

This commit is contained in:
Haojun Liao 2022-10-09 14:34:10 +08:00
parent f298119e31
commit c5e094efd0
1 changed files with 16 additions and 7 deletions
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23
source/dnode/vnode/src/tsdb/tsdbMergeTree.c
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@ -235,6 +235,10 @@ static int32_t binarySearchForStartRowIndex(uint64_t* uidList, int32_t num, uint
}
}
static bool queryChildTable(uint64_t suid) {
return suid != 0;
}
int32_t tLDataIterOpen(struct SLDataIter **pIter, SDataFReader *pReader, int32_t iStt, int8_t backward, uint64_t suid,
uint64_t uid, STimeWindow *pTimeWindow, SVersionRange *pRange, SSttBlockLoadInfo* pBlockLoadInfo) {
int32_t code = 0;
@ -252,15 +256,20 @@ int32_t tLDataIterOpen(struct SLDataIter **pIter, SDataFReader *pReader, int32_t
(*pIter)->timeWindow = *pTimeWindow;
(*pIter)->pBlockLoadInfo = pBlockLoadInfo;
if (taosArrayGetSize(pBlockLoadInfo->aSttBlk) == 0) {
size_t size = taosArrayGetSize(pBlockLoadInfo->aSttBlk);
if (size == 0) {
code = tsdbReadSttBlk(pReader, iStt, pBlockLoadInfo->aSttBlk);
if (code) {
goto _exit;
} else {
size_t size = taosArrayGetSize(pBlockLoadInfo->aSttBlk);
SArray* pTmp = taosArrayInit(size, sizeof(SSttBlk));
for(int32_t i = 0; i < size; ++i) {
SSttBlk* p = taosArrayGet(pBlockLoadInfo->aSttBlk, i);
}
// only apply to the child tables, ordinary tables will not incur this filter procedure.
if (queryChildTable(suid)) {
size = taosArrayGetSize(pBlockLoadInfo->aSttBlk);
SArray *pTmp = taosArrayInit(size, sizeof(SSttBlk));
for (int32_t i = 0; i < size; ++i) {
SSttBlk *p = taosArrayGet(pBlockLoadInfo->aSttBlk, i);
if (p->suid == suid) {
taosArrayPush(pTmp, p);
}
@ -271,7 +280,7 @@ int32_t tLDataIterOpen(struct SLDataIter **pIter, SDataFReader *pReader, int32_t
}
}
size_t size = taosArrayGetSize(pBlockLoadInfo->aSttBlk);
size = taosArrayGetSize(pBlockLoadInfo->aSttBlk);
// find the start block
(*pIter)->iSttBlk = binarySearchForStartBlock(pBlockLoadInfo->aSttBlk->pData, size, uid, backward);