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Merge pull request #19408 from taosdata/FIX/TD-21428-main 

enh: vote for higher lastLogTerm despite commitIndex
This commit is contained in:
Shengliang Guan 2023-01-10 09:35:15 +08:00 committed by GitHub
parent e194d87efa 639652314f
commit 9c5b5e93d9
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 37 additions and 41 deletions
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4
source/libs/sync/inc/syncMessage.h
View File

@ -258,8 +258,8 @@ int32_t syncBuildRequestVote(SRpcMsg* pMsg, int32_t vgId);
int32_t syncBuildRequestVoteReply(SRpcMsg* pMsg, int32_t vgId);
int32_t syncBuildAppendEntries(SRpcMsg* pMsg, int32_t dataLen, int32_t vgId);
int32_t syncBuildAppendEntriesReply(SRpcMsg* pMsg, int32_t vgId);
int32_t syncBuildAppendEntriesFromRaftLog(SSyncNode* pNode, SSyncRaftEntry* pEntry, SyncTerm prevLogTerm,
SRpcMsg* pRpcMsg);
int32_t syncBuildAppendEntriesFromRaftEntry(SSyncNode* pNode, SSyncRaftEntry* pEntry, SyncTerm prevLogTerm,
SRpcMsg* pRpcMsg);
int32_t syncBuildHeartbeat(SRpcMsg* pMsg, int32_t vgId);
int32_t syncBuildHeartbeatReply(SRpcMsg* pMsg, int32_t vgId);
int32_t syncBuildPreSnapshot(SRpcMsg* pMsg, int32_t vgId);

12
source/libs/sync/inc/syncPipeline.h
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@ -78,14 +78,14 @@ static FORCE_INLINE int32_t syncLogGetNextRetryBackoff(SSyncLogReplMgr* pMgr) {
SyncTerm syncLogReplMgrGetPrevLogTerm(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncIndex index);
int32_t syncLogReplMgrReplicateOnce(SSyncLogReplMgr* pMgr, SSyncNode* pNode);
int32_t syncLogBufferReplicateOneTo(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncIndex index, SyncTerm* pTerm,
SRaftId* pDestId, bool* pBarrier);
int32_t syncLogReplMgrReplicateAttemptedOnce(SSyncLogReplMgr* pMgr, SSyncNode* pNode);
int32_t syncLogReplMgrReplicateProbeOnce(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncIndex index);
int32_t syncLogReplMgrReplicateOneTo(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncIndex index, SyncTerm* pTerm,
SRaftId* pDestId, bool* pBarrier);
int32_t syncLogReplMgrReplicateAttempt(SSyncLogReplMgr* pMgr, SSyncNode* pNode);
int32_t syncLogReplMgrReplicateProbe(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncIndex index);
int32_t syncLogReplMgrProcessReply(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncAppendEntriesReply* pMsg);
int32_t syncLogReplMgrProcessReplyInRecoveryMode(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncAppendEntriesReply* pMsg);
int32_t syncLogReplMgrProcessReplyInNormalMode(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncAppendEntriesReply* pMsg);
int32_t syncLogReplMgrProcessReplyAsRecovery(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncAppendEntriesReply* pMsg);
int32_t syncLogReplMgrProcessReplyAsNormal(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncAppendEntriesReply* pMsg);
int32_t syncLogReplMgrProcessHeartbeatReply(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncHeartbeatReply* pMsg);
int32_t syncLogReplMgrRetryOnNeed(SSyncLogReplMgr* pMgr, SSyncNode* pNode);

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

@ -128,7 +128,7 @@ int32_t syncNodeFollowerCommit(SSyncNode* ths, SyncIndex newCommitIndex) {
return 0;
}
SSyncRaftEntry* syncLogAppendEntriesToRaftEntry(const SyncAppendEntries* pMsg) {
SSyncRaftEntry* syncBuildRaftEntryFromAppendEntries(const SyncAppendEntries* pMsg) {
SSyncRaftEntry* pEntry = taosMemoryMalloc(pMsg->dataLen);
if (pEntry == NULL) {
terrno = TSDB_CODE_OUT_OF_MEMORY;
@ -182,7 +182,7 @@ int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
goto _IGNORE;
}
SSyncRaftEntry* pEntry = syncLogAppendEntriesToRaftEntry(pMsg);
SSyncRaftEntry* pEntry = syncBuildRaftEntryFromAppendEntries(pMsg);
if (pEntry == NULL) {
sError("vgId:%d, failed to get raft entry from append entries since %s", ths->vgId, terrstr());

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

@ -154,8 +154,8 @@ int32_t syncBuildAppendEntriesReply(SRpcMsg* pMsg, int32_t vgId) {
return 0;
}
int32_t syncBuildAppendEntriesFromRaftLog(SSyncNode* pNode, SSyncRaftEntry* pEntry, SyncTerm prevLogTerm,
SRpcMsg* pRpcMsg) {
int32_t syncBuildAppendEntriesFromRaftEntry(SSyncNode* pNode, SSyncRaftEntry* pEntry, SyncTerm prevLogTerm,
SRpcMsg* pRpcMsg) {
uint32_t dataLen = pEntry->bytes;
uint32_t bytes = sizeof(SyncAppendEntries) + dataLen;
pRpcMsg->contLen = bytes;

36
source/libs/sync/src/syncPipeline.c
View File

@ -642,7 +642,7 @@ int32_t syncLogReplMgrRetryOnNeed(SSyncLogReplMgr* pMgr, SSyncNode* pNode) {
}
bool barrier = false;
if (syncLogBufferReplicateOneTo(pMgr, pNode, index, &term, pDestId, &barrier) < 0) {
if (syncLogReplMgrReplicateOneTo(pMgr, pNode, index, &term, pDestId, &barrier) < 0) {
sError("vgId:%d, failed to replicate sync log entry since %s. index: %" PRId64 ", dest: %" PRIx64 "", pNode->vgId,
terrstr(), index, pDestId->addr);
goto _out;
@ -674,8 +674,7 @@ _out:
return ret;
}
int32_t syncLogReplMgrProcessReplyInRecoveryMode(SSyncLogReplMgr* pMgr, SSyncNode* pNode,
SyncAppendEntriesReply* pMsg) {
int32_t syncLogReplMgrProcessReplyAsRecovery(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncAppendEntriesReply* pMsg) {
SSyncLogBuffer* pBuf = pNode->pLogBuf;
SRaftId destId = pMsg->srcId;
ASSERT(pMgr->restored == false);
@ -750,7 +749,7 @@ int32_t syncLogReplMgrProcessReplyInRecoveryMode(SSyncLogReplMgr* pMgr, SSyncNod
// attempt to replicate the raft log at index
(void)syncLogReplMgrReset(pMgr);
return syncLogReplMgrReplicateProbeOnce(pMgr, pNode, index);
return syncLogReplMgrReplicateProbe(pMgr, pNode, index);
}
int32_t syncLogReplMgrProcessHeartbeatReply(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncHeartbeatReply* pMsg) {
@ -778,9 +777,9 @@ int32_t syncLogReplMgrProcessReply(SSyncLogReplMgr* pMgr, SSyncNode* pNode, Sync
}
if (pMgr->restored) {
(void)syncLogReplMgrProcessReplyInNormalMode(pMgr, pNode, pMsg);
(void)syncLogReplMgrProcessReplyAsNormal(pMgr, pNode, pMsg);
} else {
(void)syncLogReplMgrProcessReplyInRecoveryMode(pMgr, pNode, pMsg);
(void)syncLogReplMgrProcessReplyAsRecovery(pMgr, pNode, pMsg);
}
taosThreadMutexUnlock(&pBuf->mutex);
return 0;
@ -788,14 +787,14 @@ int32_t syncLogReplMgrProcessReply(SSyncLogReplMgr* pMgr, SSyncNode* pNode, Sync
int32_t syncLogReplMgrReplicateOnce(SSyncLogReplMgr* pMgr, SSyncNode* pNode) {
if (pMgr->restored) {
(void)syncLogReplMgrReplicateAttemptedOnce(pMgr, pNode);
(void)syncLogReplMgrReplicateAttempt(pMgr, pNode);
} else {
(void)syncLogReplMgrReplicateProbeOnce(pMgr, pNode, pNode->pLogBuf->matchIndex);
(void)syncLogReplMgrReplicateProbe(pMgr, pNode, pNode->pLogBuf->matchIndex);
}
return 0;
}
int32_t syncLogReplMgrReplicateProbeOnce(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncIndex index) {
int32_t syncLogReplMgrReplicateProbe(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncIndex index) {
ASSERT(!pMgr->restored);
ASSERT(pMgr->startIndex >= 0);
int64_t retryMaxWaitMs = syncGetRetryMaxWaitMs();
@ -810,7 +809,7 @@ int32_t syncLogReplMgrReplicateProbeOnce(SSyncLogReplMgr* pMgr, SSyncNode* pNode
SRaftId* pDestId = &pNode->replicasId[pMgr->peerId];
bool barrier = false;
SyncTerm term = -1;
if (syncLogBufferReplicateOneTo(pMgr, pNode, index, &term, pDestId, &barrier) < 0) {
if (syncLogReplMgrReplicateOneTo(pMgr, pNode, index, &term, pDestId, &barrier) < 0) {
sError("vgId:%d, failed to replicate log entry since %s. index: %" PRId64 ", dest: 0x%016" PRIx64 "", pNode->vgId,
terrstr(), index, pDestId->addr);
return -1;
@ -833,7 +832,7 @@ int32_t syncLogReplMgrReplicateProbeOnce(SSyncLogReplMgr* pMgr, SSyncNode* pNode
return 0;
}
int32_t syncLogReplMgrReplicateAttemptedOnce(SSyncLogReplMgr* pMgr, SSyncNode* pNode) {
int32_t syncLogReplMgrReplicateAttempt(SSyncLogReplMgr* pMgr, SSyncNode* pNode) {
ASSERT(pMgr->restored);
SRaftId* pDestId = &pNode->replicasId[pMgr->peerId];
@ -854,7 +853,8 @@ int32_t syncLogReplMgrReplicateAttemptedOnce(SSyncLogReplMgr* pMgr, SSyncNode* p
int64_t pos = index % pMgr->size;
SRaftId* pDestId = &pNode->replicasId[pMgr->peerId];
bool barrier = false;
if (syncLogBufferReplicateOneTo(pMgr, pNode, index, &term, pDestId, &barrier) < 0) {
SyncTerm term = -1;
if (syncLogReplMgrReplicateOneTo(pMgr, pNode, index, &term, pDestId, &barrier) < 0) {
sError("vgId:%d, failed to replicate log entry since %s. index: %" PRId64 ", dest: 0x%016" PRIx64 "", pNode->vgId,
terrstr(), index, pDestId->addr);
return -1;
@ -888,7 +888,7 @@ int32_t syncLogReplMgrReplicateAttemptedOnce(SSyncLogReplMgr* pMgr, SSyncNode* p
return 0;
}
int32_t syncLogReplMgrProcessReplyInNormalMode(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncAppendEntriesReply* pMsg) {
int32_t syncLogReplMgrProcessReplyAsNormal(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncAppendEntriesReply* pMsg) {
ASSERT(pMgr->restored == true);
if (pMgr->startIndex <= pMsg->lastSendIndex && pMsg->lastSendIndex < pMgr->endIndex) {
if (pMgr->startIndex < pMgr->matchIndex && pMgr->retryBackoff > 0) {
@ -907,7 +907,7 @@ int32_t syncLogReplMgrProcessReplyInNormalMode(SSyncLogReplMgr* pMgr, SSyncNode*
pMgr->startIndex = pMgr->matchIndex;
}
return syncLogReplMgrReplicateAttemptedOnce(pMgr, pNode);
return syncLogReplMgrReplicateAttempt(pMgr, pNode);
}
SSyncLogReplMgr* syncLogReplMgrCreate() {
@ -1101,12 +1101,11 @@ SSyncRaftEntry* syncLogBufferGetOneEntry(SSyncLogBuffer* pBuf, SSyncNode* pNode,
return pEntry;
}
int32_t syncLogBufferReplicateOneTo(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncIndex index, SyncTerm* pTerm,
SRaftId* pDestId, bool* pBarrier) {
int32_t syncLogReplMgrReplicateOneTo(SSyncLogReplMgr* pMgr, SSyncNode* pNode, SyncIndex index, SyncTerm* pTerm,
SRaftId* pDestId, bool* pBarrier) {
SSyncRaftEntry* pEntry = NULL;
SRpcMsg msgOut = {0};
bool inBuf = false;
int32_t ret = -1;
SyncTerm prevLogTerm = -1;
SSyncLogBuffer* pBuf = pNode->pLogBuf;
@ -1132,14 +1131,13 @@ int32_t syncLogBufferReplicateOneTo(SSyncLogReplMgr* pMgr, SSyncNode* pNode, Syn
}
if (pTerm) *pTerm = pEntry->term;
int32_t code = syncBuildAppendEntriesFromRaftLog(pNode, pEntry, prevLogTerm, &msgOut);
int32_t code = syncBuildAppendEntriesFromRaftEntry(pNode, pEntry, prevLogTerm, &msgOut);
if (code < 0) {
sError("vgId:%d, failed to get append entries for index:%" PRId64 "", pNode->vgId, index);
goto _err;
}
(void)syncNodeSendAppendEntries(pNode, pDestId, &msgOut);
ret = 0;
sTrace("vgId:%d, replicate one msg index: %" PRId64 " term: %" PRId64 " prevterm: %" PRId64 " to dest: 0x%016" PRIx64,
pNode->vgId, pEntry->index, pEntry->term, prevLogTerm, pDestId->addr);

18
source/libs/sync/src/syncRequestVote.c
View File

@ -48,15 +48,6 @@ static bool syncNodeOnRequestVoteLogOK(SSyncNode* ths, SyncRequestVote* pMsg) {
SyncTerm myLastTerm = syncNodeGetLastTerm(ths);
SyncIndex myLastIndex = syncNodeGetLastIndex(ths);
if (pMsg->lastLogIndex < ths->commitIndex) {
sNTrace(ths,
"logok:0, {my-lterm:%" PRIu64 ", my-lindex:%" PRId64 ", recv-lterm:%" PRIu64 ", recv-lindex:%" PRId64
", recv-term:%" PRIu64 "}",
myLastTerm, myLastIndex, pMsg->lastLogTerm, pMsg->lastLogIndex, pMsg->term);
return false;
}
if (myLastTerm == SYNC_TERM_INVALID) {
sNTrace(ths,
"logok:0, {my-lterm:%" PRIu64 ", my-lindex:%" PRId64 ", recv-lterm:%" PRIu64 ", recv-lindex:%" PRId64
@ -70,6 +61,13 @@ static bool syncNodeOnRequestVoteLogOK(SSyncNode* ths, SyncRequestVote* pMsg) {
"logok:1, {my-lterm:%" PRIu64 ", my-lindex:%" PRId64 ", recv-lterm:%" PRIu64 ", recv-lindex:%" PRId64
", recv-term:%" PRIu64 "}",
myLastTerm, myLastIndex, pMsg->lastLogTerm, pMsg->lastLogIndex, pMsg->term);
if (pMsg->lastLogIndex < ths->commitIndex) {
sNWarn(ths,
"logok:1, commit rollback required. {my-lterm:%" PRIu64 ", my-lindex:%" PRId64 ", recv-lterm:%" PRIu64
", recv-lindex:%" PRId64 ", recv-term:%" PRIu64 "}",
myLastTerm, myLastIndex, pMsg->lastLogTerm, pMsg->lastLogIndex, pMsg->term);
}
return true;
}
@ -137,4 +135,4 @@ int32_t syncNodeOnRequestVote(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
syncLogSendRequestVoteReply(ths, pReply, "");
syncNodeSendMsgById(&pReply->destId, ths, &rpcMsg);
return 0;
}
}