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feat: split vgroup

This commit is contained in:
Shengliang Guan 2022-06-09 20:46:15 +08:00
parent 5bda367fbd
commit e85e323863
3 changed files with 150 additions and 52 deletions
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1
source/dnode/mnode/impl/inc/mndVgroup.h
View File

@ -41,6 +41,7 @@ int32_t mndAddAlterVnodeAction(SMnode *, STrans *pTrans, SDbObj *pDb, SVgObj *pV
int32_t mndAddDropVnodeAction(SMnode *, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup, SVnodeGid *pVgid, bool isRedo);
int32_t mndSetMoveVgroupInfoToTrans(SMnode *, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup, int32_t vn, SArray *pArray);
int32_t mndSetMoveVgroupsInfoToTrans(SMnode *, STrans *pTrans, int32_t dropDnodeId);
int32_t mndBuildAlterVgroupAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup, SArray *pArray);
void *mndBuildCreateVnodeReq(SMnode *, SDnodeObj *pDnode, SDbObj *pDb, SVgObj *pVgroup, int32_t *cntlen, bool standby);
void *mndBuildDropVnodeReq(SMnode *, SDnodeObj *pDnode, SDbObj *pDb, SVgObj *pVgroup, int32_t *pContLen);

51
source/dnode/mnode/impl/src/mndDb.c
View File

@ -636,57 +636,6 @@ static int32_t mndSetAlterDbCommitLogs(SMnode *pMnode, STrans *pTrans, SDbObj *p
return 0;
}
static int32_t mndBuildAlterVgroupAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup, SArray *pArray) {
if (pVgroup->replica <= 0 || pVgroup->replica == pDb->cfg.replications) {
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, pVgroup, TDMT_VND_ALTER_CONFIG) != 0) {
return -1;
}
} else {
SVgObj newVgroup = {0};
memcpy(&newVgroup, pVgroup, sizeof(SVgObj));
mndTransSetSerial(pTrans);
if (newVgroup.replica < pDb->cfg.replications) {
mInfo("db:%s, vgId:%d, vn:0 dnode:%d, will add 2 vnodes", pVgroup->dbName, pVgroup->vgId,
pVgroup->vnodeGid[0].dnodeId);
if (mndAddVnodeToVgroup(pMnode, &newVgroup, pArray) != 0) return -1;
if (mndAddCreateVnodeAction(pMnode, pTrans, pDb, &newVgroup, &newVgroup.vnodeGid[1], true) != 0) return -1;
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, &newVgroup, TDMT_VND_ALTER_REPLICA) != 0) return -1;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pDb, &newVgroup) != 0) return -1;
if (mndAddVnodeToVgroup(pMnode, &newVgroup, pArray) != 0) return -1;
if (mndAddCreateVnodeAction(pMnode, pTrans, pDb, &newVgroup, &newVgroup.vnodeGid[2], true) != 0) return -1;
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, &newVgroup, TDMT_VND_ALTER_REPLICA) != 0) return -1;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pDb, &newVgroup) != 0) return -1;
} else {
mInfo("db:%s, vgId:%d, will remove 2 vnodes", pVgroup->dbName, pVgroup->vgId);
SVnodeGid del1 = {0};
if (mndRemoveVnodeFromVgroup(pMnode, &newVgroup, pArray, &del1) != 0) return -1;
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, &newVgroup, TDMT_VND_ALTER_REPLICA) != 0) return -1;
if (mndAddDropVnodeAction(pMnode, pTrans, pDb, &newVgroup, &del1, true) != 0) return -1;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pDb, &newVgroup) != 0) return -1;
SVnodeGid del2 = {0};
if (mndRemoveVnodeFromVgroup(pMnode, &newVgroup, pArray, &del2) != 0) return -1;
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, &newVgroup, TDMT_VND_ALTER_REPLICA) != 0) return -1;
if (mndAddDropVnodeAction(pMnode, pTrans, pDb, &newVgroup, &del2, true) != 0) return -1;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pDb, &newVgroup) != 0) return -1;
}
SSdbRaw *pVgRaw = mndVgroupActionEncode(&newVgroup);
if (pVgRaw == NULL) return -1;
if (mndTransAppendCommitlog(pTrans, pVgRaw) != 0) {
sdbFreeRaw(pVgRaw);
return -1;
}
sdbSetRawStatus(pVgRaw, SDB_STATUS_READY);
}
return 0;
}
static int32_t mndSetAlterDbRedoActions(SMnode *pMnode, STrans *pTrans, SDbObj *pOld, SDbObj *pNew) {
SSdb *pSdb = pMnode->pSdb;
void *pIter = NULL;

150
source/dnode/mnode/impl/src/mndVgroup.c
View File

@ -1166,7 +1166,155 @@ _OVER:
return code;
}
static int32_t mndProcessSplitVgroupMsg(SRpcMsg *pReq) { return 0; }
int32_t mndBuildAlterVgroupAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup, SArray *pArray) {
if (pVgroup->replica <= 0 || pVgroup->replica == pDb->cfg.replications) {
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, pVgroup, TDMT_VND_ALTER_CONFIG) != 0) {
return -1;
}
} else {
SVgObj newVgroup = {0};
memcpy(&newVgroup, pVgroup, sizeof(SVgObj));
mndTransSetSerial(pTrans);
if (newVgroup.replica < pDb->cfg.replications) {
mInfo("db:%s, vgId:%d, vn:0 dnode:%d, will add 2 vnodes", pVgroup->dbName, pVgroup->vgId,
pVgroup->vnodeGid[0].dnodeId);
if (mndAddVnodeToVgroup(pMnode, &newVgroup, pArray) != 0) return -1;
if (mndAddCreateVnodeAction(pMnode, pTrans, pDb, &newVgroup, &newVgroup.vnodeGid[1], true) != 0) return -1;
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, &newVgroup, TDMT_VND_ALTER_REPLICA) != 0) return -1;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pDb, &newVgroup) != 0) return -1;
if (mndAddVnodeToVgroup(pMnode, &newVgroup, pArray) != 0) return -1;
if (mndAddCreateVnodeAction(pMnode, pTrans, pDb, &newVgroup, &newVgroup.vnodeGid[2], true) != 0) return -1;
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, &newVgroup, TDMT_VND_ALTER_REPLICA) != 0) return -1;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pDb, &newVgroup) != 0) return -1;
} else if (newVgroup.replica > pDb->cfg.replications) {
mInfo("db:%s, vgId:%d, will remove 2 vnodes", pVgroup->dbName, pVgroup->vgId);
SVnodeGid del1 = {0};
if (mndRemoveVnodeFromVgroup(pMnode, &newVgroup, pArray, &del1) != 0) return -1;
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, &newVgroup, TDMT_VND_ALTER_REPLICA) != 0) return -1;
if (mndAddDropVnodeAction(pMnode, pTrans, pDb, &newVgroup, &del1, true) != 0) return -1;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pDb, &newVgroup) != 0) return -1;
SVnodeGid del2 = {0};
if (mndRemoveVnodeFromVgroup(pMnode, &newVgroup, pArray, &del2) != 0) return -1;
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, &newVgroup, TDMT_VND_ALTER_REPLICA) != 0) return -1;
if (mndAddDropVnodeAction(pMnode, pTrans, pDb, &newVgroup, &del2, true) != 0) return -1;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pDb, &newVgroup) != 0) return -1;
} else {
}
SSdbRaw *pVgRaw = mndVgroupActionEncode(&newVgroup);
if (pVgRaw == NULL) return -1;
if (mndTransAppendCommitlog(pTrans, pVgRaw) != 0) {
sdbFreeRaw(pVgRaw);
return -1;
}
sdbSetRawStatus(pVgRaw, SDB_STATUS_READY);
}
return 0;
}
static int32_t mndAddAdjustVnodeHashRangeAction(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup) {
return 0;
}
static int32_t mndSplitVgroup(SMnode *pMnode, SRpcMsg *pReq, SDbObj *pDb, SVgObj *pVgroup) {
int32_t code = -1;
SSdbRaw *pRaw = NULL;
STrans *pTrans = NULL;
SArray *pArray = mndBuildDnodesArray(pMnode, 0);
pTrans = mndTransCreate(pMnode, TRN_POLICY_RETRY, TRN_CONFLICT_GLOBAL, pReq);
if (pTrans == NULL) goto _OVER;
mndTransSetSerial(pTrans);
mDebug("trans:%d, used to split vgroup, vgId:%d", pTrans->id, pVgroup->vgId);
SVgObj newVg1 = {0};
memcpy(&newVg1, pVgroup, sizeof(SVgObj));
mInfo("vgId:%d, vgroup info before split, replica:%d hashBegin:%u hashEnd:%u", newVg1.vgId, newVg1.replica,
newVg1.hashBegin, newVg1.hashEnd);
for (int32_t i = 0; i < newVg1.replica; ++i) {
mInfo("vgId:%d, vnode:%d dnode:%d", newVg1.vgId, i, newVg1.vnodeGid[i].dnodeId);
}
if (newVg1.replica == 1) {
if (mndAddVnodeToVgroup(pMnode, &newVg1, pArray) != 0) goto _OVER;
if (mndAddCreateVnodeAction(pMnode, pTrans, pDb, &newVg1, &newVg1.vnodeGid[1], true) != 0) goto _OVER;
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, &newVg1, TDMT_VND_ALTER_REPLICA) != 0) goto _OVER;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pDb, &newVg1) != 0) goto _OVER;
} else if (newVg1.replica == 3) {
SVnodeGid del1 = {0};
if (mndRemoveVnodeFromVgroup(pMnode, &newVg1, pArray, &del1) != 0) goto _OVER;
if (mndAddAlterVnodeAction(pMnode, pTrans, pDb, &newVg1, TDMT_VND_ALTER_REPLICA) != 0) goto _OVER;
if (mndAddDropVnodeAction(pMnode, pTrans, pDb, &newVg1, &del1, true) != 0) goto _OVER;
if (mndAddAlterVnodeConfirmAction(pMnode, pTrans, pDb, &newVg1) != 0) goto _OVER;
} else {
goto _OVER;
}
SVgObj newVg2 = {0};
memcpy(&newVg1, &newVg2, sizeof(SVgObj));
newVg1.replica = 1;
newVg1.hashEnd = (newVg1.hashBegin + newVg1.hashEnd) / 2;
memset(&newVg1.vnodeGid[1], 0, sizeof(SVnodeGid));
newVg2.replica = 1;
newVg2.hashBegin = newVg1.hashEnd + 1;
memcpy(&newVg2.vnodeGid[0], &newVg2.vnodeGid[1], sizeof(SVnodeGid));
memset(&newVg1.vnodeGid[1], 0, sizeof(SVnodeGid));
if (mndAddAdjustVnodeHashRangeAction(pMnode, pTrans, pDb, &newVg1) != 0) goto _OVER;
if (mndAddAdjustVnodeHashRangeAction(pMnode, pTrans, pDb, &newVg2) != 0) goto _OVER;
// adjust vgroup
if (mndBuildAlterVgroupAction(pMnode, pTrans, pDb, &newVg1, pArray) != 0) goto _OVER;
if (mndBuildAlterVgroupAction(pMnode, pTrans, pDb, &newVg2, pArray) != 0) goto _OVER;
_OVER:
mndTransDrop(pTrans);
sdbFreeRaw(pRaw);
return code;
}
static int32_t mndProcessSplitVgroupMsg(SRpcMsg *pReq) {
SMnode *pMnode = pReq->info.node;
int32_t code = -1;
int32_t vgId = 2;
SUserObj *pUser = NULL;
SVgObj *pVgroup = NULL;
SDbObj *pDb = NULL;
mDebug("vgId:%d, start to split", vgId);
pVgroup = mndAcquireVgroup(pMnode, vgId);
if (pVgroup == NULL) goto _OVER;
pDb = mndAcquireDb(pMnode, pVgroup->dbName);
if (pDb == NULL) goto _OVER;
pUser = mndAcquireUser(pMnode, pReq->conn.user);
if (pUser == NULL) {
terrno = TSDB_CODE_MND_NO_USER_FROM_CONN;
goto _OVER;
}
if (mndCheckNodeAuth(pUser) != 0) {
goto _OVER;
}
code = mndSplitVgroup(pMnode, pReq, pDb, pVgroup);
if (code == 0) code = TSDB_CODE_ACTION_IN_PROGRESS;
_OVER:
mndReleaseUser(pMnode, pUser);
mndReleaseVgroup(pMnode, pVgroup);
mndReleaseDb(pMnode, pDb);
return code;
}
static int32_t mndSetBalanceVgroupInfoToTrans(SMnode *pMnode, STrans *pTrans, SDbObj *pDb, SVgObj *pVgroup,
SDnodeObj *pSrc, SDnodeObj *pDst) {