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fix: at most 128 k-way merge to decrease memory usage

This commit is contained in:
slzhou 2023-06-18 07:53:35 +08:00
parent 9e781ed7a6
commit fc523d1265
1 changed files with 2 additions and 2 deletions
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4
source/libs/executor/src/scanoperator.c
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@ -2787,8 +2787,8 @@ int32_t startGroupTableMergeScan(SOperatorInfo* pOperator) {
// the additional one is reserved for merge result
// pInfo->sortBufSize = pInfo->bufPageSize * (tableEndIdx - tableStartIdx + 1 + 1);
int32_t kWay = (TSDB_MAX_BYTES_PER_ROW * 2) / (pInfo->pResBlock->info.rowSize);
if (kWay >= 256) {
kWay = 256;
if (kWay >= 128) {
kWay = 128;
} else if (kWay <= 2) {
kWay = 2;
} else {