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restore old change replica

This commit is contained in:
dmchen 2023-07-19 15:35:37 +08:00
parent 141004bf77
commit 8062d603b7
3 changed files with 117 additions and 1 deletions
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2
source/dnode/mnode/impl/inc/mndVgroup.h
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@ -47,6 +47,8 @@ int32_t mndBuildAlterVgroupAction(SMnode *pMnode, STrans *pTrans, SDbObj *pOldDb
SArray *pArray);
int32_t mndBuildCompactVgroupAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup, int64_t compactTs,
STimeWindow tw);
int32_t mndBuildRaftAlterVgroupAction(SMnode *pMnode, STrans *pTrans, SDbObj *pOldDb, SDbObj *pNewDb, SVgObj *pVgroup,
SArray *pArray);
void *mndBuildCreateVnodeReq(SMnode *, SDnodeObj *pDnode, SDbObj *pDb, SVgObj *pVgroup, int32_t *pContLen);
void *mndBuildDropVnodeReq(SMnode *, SDnodeObj *pDnode, SDbObj *pDb, SVgObj *pVgroup, int32_t *pContLen);

2
source/dnode/mnode/impl/src/mndDb.c
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@ -852,7 +852,7 @@ static int32_t mndSetAlterDbRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj *
if (pIter == NULL) break;
if (mndVgroupInDb(pVgroup, pNewDb->uid)) {
if (mndBuildAlterVgroupAction(pMnode, pTrans, pOldDb, pNewDb, pVgroup, pArray) != 0) {
if (mndBuildRaftAlterVgroupAction(pMnode, pTrans, pOldDb, pNewDb, pVgroup, pArray) != 0) {
sdbCancelFetch(pSdb, pIter);
sdbRelease(pSdb, pVgroup);
taosArrayDestroy(pArray);

114
source/dnode/mnode/impl/src/mndVgroup.c
View File

@ -1428,6 +1428,32 @@ int32_t mndAddCheckLearnerCatchupAction(SMnode *pMnode, STrans *pTrans, SDbObj *
return 0;
}
int32_t mndAddAlterVnodeTypeAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup, int32_t dnodeId) {
SDnodeObj *pDnode = mndAcquireDnode(pMnode, dnodeId);
if (pDnode == NULL) return -1;
STransAction action = {0};
action.epSet = mndGetDnodeEpset(pDnode);
mndReleaseDnode(pMnode, pDnode);
int32_t contLen = 0;
void *pReq = mndBuildAlterVnodeReplicaReq(pMnode, pDb, pVgroup, dnodeId, &contLen);
if (pReq == NULL) return -1;
action.pCont = pReq;
action.contLen = contLen;
action.msgType = TDMT_DND_ALTER_VNODE_TYPE;
action.acceptableCode = TSDB_CODE_VND_ALREADY_IS_VOTER;
action.retryCode = TSDB_CODE_VND_NOT_CATCH_UP;
if (mndTransAppendRedoAction(pTrans, &action) != 0) {
taosMemoryFree(pReq);
return -1;
}
return 0;
}
int32_t mndRestoreAddAlterVnodeTypeAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup,
SDnodeObj *pDnode) {
STransAction action = {0};
@ -2244,6 +2270,94 @@ int32_t mndBuildAlterVgroupAction(SMnode *pMnode, STrans *pTrans, SDbObj *pOldDb
mndTransSetSerial(pTrans);
if (newVgroup.replica == 1 && pNewDb->cfg.replications == 3) {
mInfo("db:%s, vgId:%d, will add 2 vnodes, vn:0 dnode:%d", pVgroup->dbName, pVgroup->vgId,
pVgroup->vnodeGid[0].dnodeId);
//add second
if (mndAddVnodeToVgroup(pMnode, pTrans, &newVgroup, pArray) != 0) return -1;
//learner stage
newVgroup.vnodeGid[0].nodeRole = TAOS_SYNC_ROLE_VOTER;
newVgroup.vnodeGid[1].nodeRole = TAOS_SYNC_ROLE_LEARNER;
if (mndAddAlterVnodeReplicaAction(pMnode, pTrans, pNewDb, &newVgroup, newVgroup.vnodeGid[0].dnodeId) != 0)
return -1;
if (mndAddCreateVnodeAction(pMnode, pTrans, pNewDb, &newVgroup, &newVgroup.vnodeGid[1]) != 0) return -1;
//follower stage
newVgroup.vnodeGid[1].nodeRole = TAOS_SYNC_ROLE_VOTER;
if (mndAddAlterVnodeTypeAction(pMnode, pTrans, pNewDb, &newVgroup, newVgroup.vnodeGid[1].dnodeId) != 0)
return -1;
if (mndAddAlterVnodeReplicaAction(pMnode, pTrans, pNewDb, &newVgroup, newVgroup.vnodeGid[0].dnodeId) != 0)
return -1;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pNewDb, &newVgroup) != 0) return -1;
//add third
if (mndAddVnodeToVgroup(pMnode, pTrans, &newVgroup, pArray) != 0) return -1;
newVgroup.vnodeGid[0].nodeRole = TAOS_SYNC_ROLE_VOTER;
newVgroup.vnodeGid[1].nodeRole = TAOS_SYNC_ROLE_VOTER;
newVgroup.vnodeGid[2].nodeRole = TAOS_SYNC_ROLE_VOTER;
if (mndAddAlterVnodeReplicaAction(pMnode, pTrans, pNewDb, &newVgroup, newVgroup.vnodeGid[0].dnodeId) != 0)
return -1;
if (mndAddAlterVnodeReplicaAction(pMnode, pTrans, pNewDb, &newVgroup, newVgroup.vnodeGid[1].dnodeId) != 0)
return -1;
if (mndAddCreateVnodeAction(pMnode, pTrans, pNewDb, &newVgroup, &newVgroup.vnodeGid[2]) != 0) return -1;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pNewDb, &newVgroup) != 0) return -1;
} else if (newVgroup.replica == 3 && pNewDb->cfg.replications == 1) {
mInfo("db:%s, vgId:%d, will remove 2 vnodes, vn:0 dnode:%d vn:1 dnode:%d vn:2 dnode:%d", pVgroup->dbName,
pVgroup->vgId, pVgroup->vnodeGid[0].dnodeId, pVgroup->vnodeGid[1].dnodeId, pVgroup->vnodeGid[2].dnodeId);
SVnodeGid del1 = {0};
SVnodeGid del2 = {0};
if (mndRemoveVnodeFromVgroup(pMnode, pTrans, &newVgroup, pArray, &del1) != 0) return -1;
if (mndAddDropVnodeAction(pMnode, pTrans, pNewDb, &newVgroup, &del1, true) != 0) return -1;
if (mndAddAlterVnodeReplicaAction(pMnode, pTrans, pNewDb, &newVgroup, newVgroup.vnodeGid[0].dnodeId) != 0)
return -1;
if (mndAddAlterVnodeReplicaAction(pMnode, pTrans, pNewDb, &newVgroup, newVgroup.vnodeGid[1].dnodeId) != 0)
return -1;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pNewDb, &newVgroup) != 0) return -1;
if (mndRemoveVnodeFromVgroup(pMnode, pTrans, &newVgroup, pArray, &del2) != 0) return -1;
if (mndAddDropVnodeAction(pMnode, pTrans, pNewDb, &newVgroup, &del2, true) != 0) return -1;
if (mndAddAlterVnodeReplicaAction(pMnode, pTrans, pNewDb, &newVgroup, newVgroup.vnodeGid[0].dnodeId) != 0)
return -1;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pNewDb, &newVgroup) != 0) return -1;
} else {
return -1;
}
mndSortVnodeGid(&newVgroup);
{
SSdbRaw *pVgRaw = mndVgroupActionEncode(&newVgroup);
if (pVgRaw == NULL) return -1;
if (mndTransAppendCommitlog(pTrans, pVgRaw) != 0) {
sdbFreeRaw(pVgRaw);
return -1;
}
(void)sdbSetRawStatus(pVgRaw, SDB_STATUS_READY);
}
return 0;
}
int32_t mndBuildRaftAlterVgroupAction(SMnode *pMnode, STrans *pTrans, SDbObj *pOldDb, SDbObj *pNewDb, SVgObj *pVgroup,
SArray *pArray) {
SVgObj newVgroup = {0};
memcpy(&newVgroup, pVgroup, sizeof(SVgObj));
if (pVgroup->replica <= 0 || pVgroup->replica == pNewDb->cfg.replications) {
if (mndAddAlterVnodeConfigAction(pMnode, pTrans, pNewDb, pVgroup) != 0) return -1;
if (mndCheckDnodeMemory(pMnode, pOldDb, pNewDb, &newVgroup, pVgroup, pArray) != 0) return -1;
return 0;
}
mndTransSetSerial(pTrans);
mInfo("trans:%d, vgid:%d alter vgroup, syncConfChangeVer:%d, version:%d, replica:%d",
pTrans->id, pVgroup->vgId, pVgroup->syncConfChangeVer, pVgroup->version, pVgroup->replica);