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Merge pull request #18732 from taosdata/FIX/TD-20920-3.0 

fix: synchronize access of pWalHandle with mutex in raftLogGetEntry
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Shengliang Guan 2022-12-06 14:13:45 +08:00 committed by GitHub
parent 4d9c1b3453 577a203541
commit d90b58b55d
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1 changed files with 4 additions and 5 deletions
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9
source/libs/sync/src/syncRaftLog.c
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@ -234,18 +234,17 @@ int32_t raftLogGetEntry(struct SSyncLogStore* pLogStore, SyncIndex index, SSyncR
*ppEntry = NULL;
// SWalReadHandle* pWalHandle = walOpenReadHandle(pWal);
int64_t ts1 = taosGetTimestampNs();
taosThreadMutexLock(&(pData->mutex));
SWalReader* pWalHandle = pData->pWalHandle;
if (pWalHandle == NULL) {
terrno = TSDB_CODE_SYN_INTERNAL_ERROR;
sError("vgId:%d, wal handle is NULL", pData->pSyncNode->vgId);
taosThreadMutexUnlock(&(pData->mutex));
return -1;
}
int64_t ts1 = taosGetTimestampNs();
taosThreadMutexLock(&(pData->mutex));
int64_t ts2 = taosGetTimestampNs();
code = walReadVer(pWalHandle, index);
int64_t ts3 = taosGetTimestampNs();