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fix: deadlock of mnode if its state changed

This commit is contained in:
Shengliang Guan 2022-08-12 18:49:28 +08:00
parent 646cb378ae
commit 2c28cdcbb5
3 changed files with 24 additions and 8 deletions
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2
source/dnode/mnode/impl/src/mndMnode.c
View File

@ -742,7 +742,9 @@ static int32_t mndProcessAlterMnodeReq(SRpcMsg *pReq) {
return code;
} else {
pMgmt->errCode = 0;
taosWLockLatch(&pMgmt->lock);
pMgmt->transId = -1;
taosWUnLockLatch(&pMgmt->lock);
tsem_wait(&pMgmt->syncSem);
mInfo("alter mnode sync result:0x%x %s", pMgmt->errCode, tstrerror(pMgmt->errCode));
terrno = pMgmt->errCode;

23
source/dnode/mnode/impl/src/mndSync.c
View File

@ -60,22 +60,22 @@ void mndSyncCommitMsg(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbM
sdbSetApplyInfo(pMnode->pSdb, cbMeta.index, cbMeta.term, cbMeta.lastConfigIndex);
}
taosRLockLatch(&pMgmt->lock);
taosWLockLatch(&pMgmt->lock);
if (transId <= 0) {
taosRUnLockLatch(&pMgmt->lock);
taosWUnLockLatch(&pMgmt->lock);
mError("trans:%d, invalid commit msg", transId);
} else if (transId == pMgmt->transId) {
taosRUnLockLatch(&pMgmt->lock);
if (pMgmt->errCode != 0) {
mError("trans:%d, failed to propose since %s", transId, tstrerror(pMgmt->errCode));
}
pMgmt->transId = 0;
taosWUnLockLatch(&pMgmt->lock);
tsem_post(&pMgmt->syncSem);
} else {
taosRUnLockLatch(&pMgmt->lock);
taosWUnLockLatch(&pMgmt->lock);
STrans *pTrans = mndAcquireTrans(pMnode, transId);
if (pTrans != NULL) {
mDebug("trans:%d, execute in mnode which not leader", transId);
mInfo("trans:%d, execute in mnode which not leader", transId);
mndTransExecute(pMnode, pTrans);
mndReleaseTrans(pMnode, pTrans);
// sdbWriteFile(pMnode->pSdb, SDB_WRITE_DELTA);
@ -275,9 +275,16 @@ int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw, int32_t transId) {
pMgmt->errCode = 0;
taosWLockLatch(&pMgmt->lock);
pMgmt->transId = transId;
taosWUnLockLatch(&pMgmt->lock);
mTrace("trans:%d, will be proposed", pMgmt->transId);
if (pMgmt->transId != 0) {
mInfo("trans:%d, can't be proposed since trans:%s alrady waiting for confirm", transId, pMgmt->transId);
taosWUnLockLatch(&pMgmt->lock);
terrno = TSDB_CODE_APP_NOT_READY;
return -1;
} else {
pMgmt->transId = transId;
mDebug("trans:%d, will be proposed", pMgmt->transId);
taosWUnLockLatch(&pMgmt->lock);
}
const bool isWeak = false;
int32_t code = syncPropose(pMgmt->sync, &req, isWeak);

7
source/dnode/vnode/src/vnd/vnodeSync.c
View File

@ -696,6 +696,13 @@ static void vnodeBecomeFollower(struct SSyncFSM *pFsm) {
static void vnodeBecomeLeader(struct SSyncFSM *pFsm) {
SVnode *pVnode = pFsm->data;
vDebug("vgId:%d, become leader", pVnode->config.vgId);
taosThreadMutexLock(&pVnode->lock);
if (pVnode->blocked) {
pVnode->blocked = false;
tsem_post(&pVnode->syncSem);
}
taosThreadMutexUnlock(&pVnode->lock);
}
static SSyncFSM *vnodeSyncMakeFsm(SVnode *pVnode) {