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Merge pull request #16051 from taosdata/fix/mnode 

fix: deadlock of vnode if its state changed
This commit is contained in:
Shengliang Guan 2022-08-12 18:46:30 +08:00 committed by GitHub
parent 4eff73e723 646cb378ae
commit 99e1001836
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 10 additions and 9 deletions
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2
source/dnode/vnode/src/inc/vnodeInt.h
View File

@ -308,7 +308,7 @@ struct SVnode {
SSink* pSink;
tsem_t canCommit;
int64_t sync;
SRWLatch lock;
TdThreadMutex lock;
bool blocked;
bool restored;
tsem_t syncSem;

3
source/dnode/vnode/src/vnd/vnodeOpen.c
View File

@ -85,7 +85,7 @@ SVnode *vnodeOpen(const char *path, STfs *pTfs, SMsgCb msgCb) {
pVnode->state.commitTerm = info.state.commitTerm;
pVnode->pTfs = pTfs;
pVnode->msgCb = msgCb;
taosInitRWLatch(&pVnode->lock);
taosThreadMutexInit(&pVnode->lock, NULL);
pVnode->blocked = false;
tsem_init(&pVnode->syncSem, 0, 0);
@ -200,6 +200,7 @@ void vnodeClose(SVnode *pVnode) {
tsem_destroy(&pVnode->syncSem);
taosThreadCondDestroy(&pVnode->poolNotEmpty);
taosThreadMutexDestroy(&pVnode->mutex);
taosThreadMutexDestroy(&pVnode->lock);
taosMemoryFree(pVnode);
}
}

14
source/dnode/vnode/src/vnd/vnodeSync.c
View File

@ -28,14 +28,14 @@ static inline bool vnodeIsMsgWeak(tmsg_t type) { return false; }
static inline void vnodeWaitBlockMsg(SVnode *pVnode, const SRpcMsg *pMsg) {
if (vnodeIsMsgBlock(pMsg->msgType)) {
const STraceId *trace = &pMsg->info.traceId;
taosWLockLatch(&pVnode->lock);
taosThreadMutexLock(&pVnode->lock);
if (!pVnode->blocked) {
vGTrace("vgId:%d, msg:%p wait block, type:%s", pVnode->config.vgId, pMsg, TMSG_INFO(pMsg->msgType));
pVnode->blocked = true;
taosWUnLockLatch(&pVnode->lock);
taosThreadMutexUnlock(&pVnode->lock);
tsem_wait(&pVnode->syncSem);
} else {
taosWUnLockLatch(&pVnode->lock);
taosThreadMutexUnlock(&pVnode->lock);
}
}
}
@ -43,13 +43,13 @@ static inline void vnodeWaitBlockMsg(SVnode *pVnode, const SRpcMsg *pMsg) {
static inline void vnodePostBlockMsg(SVnode *pVnode, const SRpcMsg *pMsg) {
if (vnodeIsMsgBlock(pMsg->msgType)) {
const STraceId *trace = &pMsg->info.traceId;
taosWLockLatch(&pVnode->lock);
taosThreadMutexLock(&pVnode->lock);
if (pVnode->blocked) {
vGTrace("vgId:%d, msg:%p post block, type:%s", pVnode->config.vgId, pMsg, TMSG_INFO(pMsg->msgType));
pVnode->blocked = false;
tsem_post(&pVnode->syncSem);
}
taosWUnLockLatch(&pVnode->lock);
taosThreadMutexUnlock(&pVnode->lock);
}
}
@ -685,12 +685,12 @@ static void vnodeBecomeFollower(struct SSyncFSM *pFsm) {
vDebug("vgId:%d, become follower", pVnode->config.vgId);
// clear old leader resource
taosWLockLatch(&pVnode->lock);
taosThreadMutexLock(&pVnode->lock);
if (pVnode->blocked) {
pVnode->blocked = false;
tsem_post(&pVnode->syncSem);
}
taosWUnLockLatch(&pVnode->lock);
taosThreadMutexUnlock(&pVnode->lock);
}
static void vnodeBecomeLeader(struct SSyncFSM *pFsm) {