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Merge pull request #20090 from taosdata/FIX/TD-22470-main 

fix: check if log buffer is empty in syncNodeOnLocalCmd
This commit is contained in:
Xiaoyu Wang 2023-02-23 10:38:21 +08:00 committed by GitHub
parent 41c46b103e b0b9877265
commit f6ba2d728c
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 16 additions and 0 deletions
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1
source/libs/sync/inc/syncPipeline.h
View File

@ -99,6 +99,7 @@ int32_t syncLogBufferReInit(SSyncLogBuffer* pBuf, SSyncNode* pNode);
// access
int64_t syncLogBufferGetEndIndex(SSyncLogBuffer* pBuf);
SyncTerm syncLogBufferGetLastMatchTerm(SSyncLogBuffer* pBuf);
bool syncLogBufferIsEmpty(SSyncLogBuffer* pBuf);
int32_t syncLogBufferAppend(SSyncLogBuffer* pBuf, SSyncNode* pNode, SSyncRaftEntry* pEntry);
int32_t syncLogBufferAccept(SSyncLogBuffer* pBuf, SSyncNode* pNode, SSyncRaftEntry* pEntry, SyncTerm prevTerm);
int64_t syncLogBufferProceed(SSyncLogBuffer* pBuf, SSyncNode* pNode, SyncTerm* pMatchTerm);

4
source/libs/sync/src/syncMain.c
View File

@ -2468,6 +2468,10 @@ int32_t syncNodeOnLocalCmd(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
syncNodeStepDown(ths, pMsg->currentTerm);
} else if (pMsg->cmd == SYNC_LOCAL_CMD_FOLLOWER_CMT) {
if (syncLogBufferIsEmpty(ths->pLogBuf)) {
sError("vgId:%d, sync log buffer is empty.", ths->vgId);
return 0;
}
SyncTerm matchTerm = syncLogBufferGetLastMatchTerm(ths->pLogBuf);
if (pMsg->currentTerm == matchTerm) {
(void)syncNodeUpdateCommitIndex(ths, pMsg->commitIndex);

11
source/libs/sync/src/syncPipeline.c
View File

@ -253,6 +253,7 @@ int32_t syncLogBufferInit(SSyncLogBuffer* pBuf, SSyncNode* pNode) {
int32_t syncLogBufferReInit(SSyncLogBuffer* pBuf, SSyncNode* pNode) {
taosThreadMutexLock(&pBuf->mutex);
syncLogBufferValidate(pBuf);
for (SyncIndex index = pBuf->startIndex; index < pBuf->endIndex; index++) {
SSyncRaftEntry* pEntry = pBuf->entries[(index + pBuf->size) % pBuf->size].pItem;
if (pEntry == NULL) continue;
@ -265,6 +266,7 @@ int32_t syncLogBufferReInit(SSyncLogBuffer* pBuf, SSyncNode* pNode) {
if (ret < 0) {
sError("vgId:%d, failed to re-initialize sync log buffer since %s.", pNode->vgId, terrstr());
}
syncLogBufferValidate(pBuf);
taosThreadMutexUnlock(&pBuf->mutex);
return ret;
}
@ -283,6 +285,13 @@ SyncTerm syncLogBufferGetLastMatchTerm(SSyncLogBuffer* pBuf) {
return term;
}
bool syncLogBufferIsEmpty(SSyncLogBuffer* pBuf) {
taosThreadMutexLock(&pBuf->mutex);
bool empty = (pBuf->endIndex <= pBuf->startIndex);
taosThreadMutexUnlock(&pBuf->mutex);
return empty;
}
int32_t syncLogBufferAccept(SSyncLogBuffer* pBuf, SSyncNode* pNode, SSyncRaftEntry* pEntry, SyncTerm prevTerm) {
taosThreadMutexLock(&pBuf->mutex);
syncLogBufferValidate(pBuf);
@ -1073,6 +1082,7 @@ int32_t syncLogBufferRollback(SSyncLogBuffer* pBuf, SSyncNode* pNode, SyncIndex
int32_t syncLogBufferReset(SSyncLogBuffer* pBuf, SSyncNode* pNode) {
taosThreadMutexLock(&pBuf->mutex);
syncLogBufferValidate(pBuf);
SyncIndex lastVer = pNode->pLogStore->syncLogLastIndex(pNode->pLogStore);
ASSERT(lastVer == pBuf->matchIndex);
SyncIndex index = pBuf->endIndex - 1;
@ -1089,6 +1099,7 @@ int32_t syncLogBufferReset(SSyncLogBuffer* pBuf, SSyncNode* pNode) {
SSyncLogReplMgr* pMgr = pNode->logReplMgrs[i];
syncLogReplMgrReset(pMgr);
}
syncLogBufferValidate(pBuf);
taosThreadMutexUnlock(&pBuf->mutex);
return 0;
}