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Merge pull request #20372 from taosdata/fix/main_bugfix_wxy 

enh: optimize last/last_row cost when the cache was first loaded
This commit is contained in:
Shengliang Guan 2023-03-10 10:07:22 +08:00 committed by GitHub
parent 522b9ec2b2 47417e003e
commit c70c9546f2
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 24 additions and 6 deletions
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1
source/dnode/vnode/src/inc/tsdb.h
View File

@ -780,6 +780,7 @@ typedef struct SCacheRowsReader {
SDataFReader *pDataFReader;
SDataFReader *pDataFReaderLast;
const char *idstr;
int64_t lastTs;
} SCacheRowsReader;
typedef struct {

14
source/dnode/vnode/src/tsdb/tsdbCache.c
View File

@ -722,6 +722,7 @@ typedef struct SFSNextRowIter {
int32_t iRow;
TSDBROW row;
SSttBlockLoadInfo *pLoadInfo;
int64_t lastTs;
} SFSNextRowIter;
static int32_t getNextRowFromFS(void *iter, TSDBROW **ppRow) {
@ -816,12 +817,12 @@ static int32_t getNextRowFromFS(void *iter, TSDBROW **ppRow) {
SDataBlk block = {0};
tDataBlkReset(&block);
// tBlockDataReset(&state->blockData);
tBlockDataReset(state->pBlockData);
tMapDataGetItemByIdx(&state->blockMap, state->iBlock, &block, tGetDataBlk);
/* code = tsdbReadBlockData(state->pDataFReader, &state->blockIdx, &block, &state->blockData, NULL, NULL);
*/
if (block.maxKey.ts <= state->lastTs) {
goto _next_fileset;
}
tBlockDataReset(state->pBlockData);
TABLEID tid = {.suid = state->suid, .uid = state->uid};
code = tBlockDataInit(state->pBlockData, &tid, state->pTSchema, NULL, 0);
@ -1070,7 +1071,7 @@ typedef struct {
static int32_t nextRowIterOpen(CacheNextRowIter *pIter, tb_uid_t uid, STsdb *pTsdb, STSchema *pTSchema, tb_uid_t suid,
SSttBlockLoadInfo *pLoadInfo, STsdbReadSnap *pReadSnap, SDataFReader **pDataFReader,
SDataFReader **pDataFReaderLast) {
SDataFReader **pDataFReaderLast, int64_t lastTs) {
int code = 0;
STbData *pMem = NULL;
@ -1141,6 +1142,7 @@ static int32_t nextRowIterOpen(CacheNextRowIter *pIter, tb_uid_t uid, STsdb *pTs
pIter->fsState.uid = uid;
pIter->fsState.pLoadInfo = pLoadInfo;
pIter->fsState.pDataFReader = pDataFReader;
pIter->fsState.lastTs = lastTs;
pIter->input[0] = (TsdbNextRowState){&pIter->memRow, true, false, &pIter->memState, getNextRowFromMem, NULL};
pIter->input[1] = (TsdbNextRowState){&pIter->imemRow, true, false, &pIter->imemState, getNextRowFromMem, NULL};
@ -1315,7 +1317,7 @@ static int32_t mergeLastRow(tb_uid_t uid, STsdb *pTsdb, bool *dup, SArray **ppCo
CacheNextRowIter iter = {0};
nextRowIterOpen(&iter, uid, pTsdb, pTSchema, pr->suid, pr->pLoadInfo, pr->pReadSnap, &pr->pDataFReader,
&pr->pDataFReaderLast);
&pr->pDataFReaderLast, pr->lastTs);
do {
TSDBROW *pRow = NULL;
@ -1453,7 +1455,7 @@ static int32_t mergeLast(tb_uid_t uid, STsdb *pTsdb, SArray **ppLastArray, SCach
CacheNextRowIter iter = {0};
nextRowIterOpen(&iter, uid, pTsdb, pTSchema, pr->suid, pr->pLoadInfo, pr->pReadSnap, &pr->pDataFReader,
&pr->pDataFReaderLast);
&pr->pDataFReaderLast, pr->lastTs);
do {
TSDBROW *pRow = NULL;

15
source/dnode/vnode/src/tsdb/tsdbCacheRead.c
View File

@ -199,6 +199,8 @@ int32_t tsdbCacherowsReaderOpen(void* pVnode, int32_t type, void* pTableIdList,
p->idstr = taosStrdup(idstr);
taosThreadMutexInit(&p->readerMutex, NULL);
p->lastTs = INT64_MIN;
*pReader = p;
return TSDB_CODE_SUCCESS;
}
@ -347,6 +349,8 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
}
{
bool hasNotNullRow = true;
int64_t minTs = INT64_MAX;
for (int32_t k = 0; k < pr->numOfCols; ++k) {
int32_t slotId = slotIds[k];
@ -357,6 +361,7 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
hasRes = true;
p->ts = pCol->ts;
p->colVal = pCol->colVal;
minTs = pCol->ts;
// only set value for last row query
if (HASTYPE(pr->type, CACHESCAN_RETRIEVE_LAST_ROW)) {
@ -373,11 +378,17 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
if (pColVal->ts > p->ts) {
if (!COL_VAL_IS_VALUE(&pColVal->colVal) && HASTYPE(pr->type, CACHESCAN_RETRIEVE_LAST)) {
if (!COL_VAL_IS_VALUE(&p->colVal)) {
hasNotNullRow = false;
}
continue;
}
hasRes = true;
p->ts = pColVal->ts;
if (pColVal->ts < minTs && HASTYPE(pr->type, CACHESCAN_RETRIEVE_LAST)) {
minTs = pColVal->ts;
}
if (!IS_VAR_DATA_TYPE(pColVal->colVal.type)) {
p->colVal = pColVal->colVal;
@ -394,6 +405,10 @@ int32_t tsdbRetrieveCacheRows(void* pReader, SSDataBlock* pResBlock, const int32
}
}
}
if (hasNotNullRow) {
pr->lastTs = minTs;
}
}
tsdbCacheRelease(lruCache, h);