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fix: deadlock of mnode if its state changed

This commit is contained in:
Shengliang Guan 2022-08-12 19:20:31 +08:00
parent 2c28cdcbb5
commit 65fa1e0164
2 changed files with 16 additions and 17 deletions
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20
source/dnode/mnode/impl/src/mndSync.c
View File

@ -66,7 +66,9 @@ void mndSyncCommitMsg(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cbM
mError("trans:%d, invalid commit msg", transId);
} else if (transId == pMgmt->transId) {
if (pMgmt->errCode != 0) {
mError("trans:%d, failed to propose since %s", transId, tstrerror(pMgmt->errCode));
mError("trans:%d, failed to propose since %s, post sem", transId, tstrerror(pMgmt->errCode));
} else {
mInfo("trans:%d, is proposed and post sem", transId, tstrerror(pMgmt->errCode));
}
pMgmt->transId = 0;
taosWUnLockLatch(&pMgmt->lock);
@ -122,7 +124,10 @@ void mndReConfig(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SReConfigCbMeta cbM
taosWLockLatch(&pMgmt->lock);
if (pMgmt->transId == -1) {
if (pMgmt->errCode != 0) {
mError("trans:-1, failed to propose sync reconfig since %s", tstrerror(pMgmt->errCode));
mError("trans:-1, failed to propose sync reconfig since %s, post sem", tstrerror(pMgmt->errCode));
} else {
mInfo("trans:-1, sync reconfig is proposed, saved:%d code:0x%x, index:%" PRId64 " term:%" PRId64 " post sem",
pMgmt->transId, cbMeta.code, cbMeta.index, cbMeta.term);
}
pMgmt->transId = 0;
tsem_post(&pMgmt->syncSem);
@ -174,7 +179,7 @@ void mndLeaderTransfer(struct SSyncFSM *pFsm, const SRpcMsg *pMsg, SFsmCbMeta cb
static void mndBecomeFollower(struct SSyncFSM *pFsm) {
SMnode *pMnode = pFsm->data;
mDebug("vgId:1, become follower");
mDebug("vgId:1, become follower and post sem");
taosWLockLatch(&pMnode->syncMgmt.lock);
if (pMnode->syncMgmt.transId != 0) {
@ -187,13 +192,6 @@ static void mndBecomeFollower(struct SSyncFSM *pFsm) {
static void mndBecomeLeader(struct SSyncFSM *pFsm) {
mDebug("vgId:1, become leader");
SMnode *pMnode = pFsm->data;
taosWLockLatch(&pMnode->syncMgmt.lock);
if (pMnode->syncMgmt.transId != 0) {
pMnode->syncMgmt.transId = 0;
tsem_post(&pMnode->syncMgmt.syncSem);
}
taosWUnLockLatch(&pMnode->syncMgmt.lock);
}
SSyncFSM *mndSyncMakeFsm(SMnode *pMnode) {
@ -276,7 +274,7 @@ int32_t mndSyncPropose(SMnode *pMnode, SSdbRaw *pRaw, int32_t transId) {
pMgmt->errCode = 0;
taosWLockLatch(&pMgmt->lock);
if (pMgmt->transId != 0) {
mInfo("trans:%d, can't be proposed since trans:%s alrady waiting for confirm", transId, pMgmt->transId);
mError("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;

13
source/dnode/vnode/src/vnd/vnodeSync.c
View File

@ -688,6 +688,7 @@ static void vnodeBecomeFollower(struct SSyncFSM *pFsm) {
taosThreadMutexLock(&pVnode->lock);
if (pVnode->blocked) {
pVnode->blocked = false;
vDebug("vgId:%d, become follower and post block", pVnode->config.vgId);
tsem_post(&pVnode->syncSem);
}
taosThreadMutexUnlock(&pVnode->lock);
@ -697,12 +698,12 @@ 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);
// taosThreadMutexLock(&pVnode->lock);
// if (pVnode->blocked) {
// pVnode->blocked = false;
// tsem_post(&pVnode->syncSem);
// }
// taosThreadMutexUnlock(&pVnode->lock);
}
static SSyncFSM *vnodeSyncMakeFsm(SVnode *pVnode) {