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Merge pull request #17262 from taosdata/fix/TD-19416 

fix(query): new META_READER_NOLOCK flag for metaReaderInit
This commit is contained in:
Shengliang Guan 2022-10-10 15:55:20 +08:00 committed by GitHub
parent 452f224727 9a410b96ef
commit f9df999a05
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 7 additions and 3 deletions
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2
source/dnode/vnode/inc/vnode.h
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@ -91,6 +91,8 @@ typedef struct SMeta SMeta; // todo: remove
typedef struct SMetaReader SMetaReader;
typedef struct SMetaEntry SMetaEntry;
#define META_READER_NOLOCK 0x1
void metaReaderInit(SMetaReader *pReader, SMeta *pMeta, int32_t flags);
void metaReaderClear(SMetaReader *pReader);
int32_t metaGetTableEntryByUid(SMetaReader *pReader, tb_uid_t uid);

4
source/dnode/vnode/src/meta/metaQuery.c
View File

@ -19,11 +19,13 @@ void metaReaderInit(SMetaReader *pReader, SMeta *pMeta, int32_t flags) {
memset(pReader, 0, sizeof(*pReader));
pReader->flags = flags;
pReader->pMeta = pMeta;
if (!(flags & META_READER_NOLOCK)) {
metaRLock(pMeta);
}
}
void metaReaderClear(SMetaReader *pReader) {
if (pReader->pMeta) {
if (pReader->pMeta && !(pReader->flags & META_READER_NOLOCK)) {
metaULock(pReader->pMeta);
}
tDecoderClear(&pReader->coder);

2
source/libs/executor/src/scanoperator.c
View File

@ -2757,7 +2757,7 @@ static SSDataBlock* sysTableScanUserTables(SOperatorInfo* pOperator) {
colDataAppend(pColInfoData, numOfRows, (char*)&ts, false);
SMetaReader mr = {0};
metaReaderInit(&mr, pInfo->readHandle.meta, 0);
metaReaderInit(&mr, pInfo->readHandle.meta, META_READER_NOLOCK);
uint64_t suid = pInfo->pCur->mr.me.ctbEntry.suid;
int32_t code = metaGetTableEntryByUid(&mr, suid);