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[TD-4279]<fix>: fix mnode single online as master

This commit is contained in:
Minglei Jin 2021-05-21 21:44:51 +08:00
parent dbf565c9e6
commit 6c9df9d519
2 changed files with 5 additions and 3 deletions
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6
src/sync/src/syncMain.c
View File

@ -709,7 +709,7 @@ static void syncChooseMaster(SSyncNode *pNode) {
}
static SSyncPeer *syncCheckMaster(SSyncNode *pNode) {
int32_t onlineNum = 0;
int32_t onlineNum = 0, arbOnlineNum = 0;
int32_t masterIndex = -1;
int32_t replica = pNode->replica;
@ -723,13 +723,15 @@ static SSyncPeer *syncCheckMaster(SSyncNode *pNode) {
SSyncPeer *pArb = pNode->peerInfo[TAOS_SYNC_MAX_REPLICA];
if (pArb && pArb->role != TAOS_SYNC_ROLE_OFFLINE) {
onlineNum++;
++arbOnlineNum;
replica = pNode->replica + 1;
}
if (onlineNum <= replica * 0.5) {
if (nodeRole != TAOS_SYNC_ROLE_UNSYNCED) {
if (nodeRole == TAOS_SYNC_ROLE_MASTER && onlineNum == replica * 0.5 && onlineNum >= 1) {
if (nodeRole == TAOS_SYNC_ROLE_MASTER && onlineNum == replica * 0.5 && ((replica > 2 && onlineNum - arbOnlineNum > 1) || pNode->replica < 3)) {
sInfo("vgId:%d, self keep work as master, online:%d replica:%d", pNode->vgId, onlineNum, replica);
masterIndex = pNode->selfIndex;
} else {
nodeRole = TAOS_SYNC_ROLE_UNSYNCED;
sInfo("vgId:%d, self change to unsynced state, online:%d replica:%d", pNode->vgId, onlineNum, replica);

2
tests/script/unique/arbitrator/dn3_mn1_vnode_nomaster.sim
View File

@ -158,7 +158,7 @@ if $dnode4Vtatus != offline then
sleep 2000
goto wait_dnode4_vgroup_offline
endi
if $dnode3Vtatus != master then
if $dnode3Vtatus != unsynced then
sleep 2000
goto wait_dnode4_vgroup_offline
endi