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fix(query): opt perf on last block query.

This commit is contained in:
Haojun Liao 2022-09-06 16:36:56 +08:00
parent a5933fc682
commit 6f252d8d7a
2 changed files with 5 additions and 18 deletions
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1
source/dnode/vnode/src/inc/tsdb.h
View File

@ -644,7 +644,6 @@ typedef struct {
} SRowInfo;
typedef struct SSttBlockLoadInfo {
int32_t sttFileIndex;
SBlockData blockData[2];
SArray *aSttBlk;
int32_t blockIndex[2]; // to denote the loaded block in the corresponding position.

22
source/dnode/vnode/src/tsdb/tsdbMergeTree.c
View File

@ -90,22 +90,23 @@ static SBlockData* loadBlockIfMissing(SLDataIter *pIter) {
int32_t code = 0;
SSttBlockLoadInfo* pInfo = pIter->pBlockLoadInfo;
if (pInfo->blockIndex[0] == pIter->iStt) {
if (pInfo->blockIndex[0] == pIter->iSttBlk) {
return &pInfo->blockData[0];
}
if (pInfo->blockIndex[1] == pIter->iStt) {
if (pInfo->blockIndex[1] == pIter->iSttBlk) {
return &pInfo->blockData[1];
}
pInfo->currentLoadBlockIndex ^= 1;
if (pIter->pSttBlk != NULL) { // current block not loaded yet
code = tsdbReadSttBlock(pIter->pReader, pIter->iStt, pIter->pSttBlk, &pInfo->blockData[pInfo->currentLoadBlockIndex]);
tsdbDebug("read last block, index:%d, last file index:%d", pIter->iSttBlk, pIter->iStt);
if (code != TSDB_CODE_SUCCESS) {
goto _exit;
}
pInfo->blockIndex[pInfo->currentLoadBlockIndex] = pIter->iStt;
pInfo->blockIndex[pInfo->currentLoadBlockIndex] = pIter->iSttBlk;
pIter->iRow = (pIter->backward) ? pInfo->blockData[pInfo->currentLoadBlockIndex].nRow : -1;
}
@ -136,26 +137,13 @@ int32_t tLDataIterOpen(struct SLDataIter **pIter, SDataFReader *pReader, int32_t
(*pIter)->timeWindow = *pTimeWindow;
(*pIter)->pBlockLoadInfo = pBlockLoadInfo;
if (pBlockLoadInfo->aSttBlk == NULL) {
// loaded into the common shared objects
pBlockLoadInfo->aSttBlk = taosArrayInit(0, sizeof(SSttBlk));
if (pBlockLoadInfo->aSttBlk == NULL) {
code = TSDB_CODE_OUT_OF_MEMORY;
goto _exit;
}
if (taosArrayGetSize(pBlockLoadInfo->aSttBlk) == 0) {
code = tsdbReadSttBlk(pReader, iStt, pBlockLoadInfo->aSttBlk);
if (code) {
goto _exit;
}
}
code = tsdbReadSttBlk(pReader, iStt, pBlockLoadInfo->aSttBlk);
if (code) {
goto _exit;
}
size_t size = taosArrayGetSize(pBlockLoadInfo->aSttBlk);
// find the start block