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HBASE-17077 Don't copy the replication queue belonging to the peer which has been deleted (Guanghao Zhang)

This commit is contained in:
tedyu 2016-11-13 07:00:25 -08:00
parent 469462c850
commit b77bfe9d3b
2 changed files with 22 additions and 12 deletions
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30
hbase-client/src/main/java/org/apache/hadoop/hbase/replication/ReplicationQueuesZKImpl.java
View File

@ -370,9 +370,10 @@ public class ReplicationQueuesZKImpl extends ReplicationStateZKBase implements R
}
/**
* It "atomically" copies all the wals queues from another region server and returns them all
* sorted per peer cluster (appended with the dead server's znode).
* It "atomically" copies one peer's wals queue from another dead region server and returns them
* all sorted. The new peer id is equal to the old peer id appended with the dead server's znode.
* @param znode pertaining to the region server to copy the queues from
* @peerId peerId pertaining to the queue need to be copied
*/
private Pair<String, SortedSet<String>> moveQueueUsingMulti(String znode, String peerId) {
try {
@ -380,18 +381,25 @@ public class ReplicationQueuesZKImpl extends ReplicationStateZKBase implements R
String deadRSZnodePath = ZKUtil.joinZNode(this.queuesZNode, znode);
List<ZKUtilOp> listOfOps = new ArrayList<>();
ReplicationQueueInfo replicationQueueInfo = new ReplicationQueueInfo(peerId);
if (!peerExists(replicationQueueInfo.getPeerId())) {
// the orphaned queues must be moved, otherwise the delete op of dead rs will fail,
// this will cause the whole multi op fail.
// NodeFailoverWorker will skip the orphaned queues.
LOG.warn("Peer " + peerId +
" didn't exist, will move its queue to avoid the failure of multi op");
}
String newPeerId = peerId + "-" + znode;
String newPeerZnode = ZKUtil.joinZNode(this.myQueuesZnode, newPeerId);
// check the logs queue for the old peer cluster
String oldClusterZnode = ZKUtil.joinZNode(deadRSZnodePath, peerId);
List<String> wals = ZKUtil.listChildrenNoWatch(this.zookeeper, oldClusterZnode);
if (!peerExists(replicationQueueInfo.getPeerId())) {
LOG.warn("Peer " + replicationQueueInfo.getPeerId() +
" didn't exist, will move its queue to avoid the failure of multi op");
for (String wal : wals) {
String oldWalZnode = ZKUtil.joinZNode(oldClusterZnode, wal);
listOfOps.add(ZKUtilOp.deleteNodeFailSilent(oldWalZnode));
}
listOfOps.add(ZKUtilOp.deleteNodeFailSilent(oldClusterZnode));
ZKUtil.multiOrSequential(this.zookeeper, listOfOps, false);
return null;
}
SortedSet<String> logQueue = new TreeSet<>();
if (wals == null || wals.size() == 0) {
listOfOps.add(ZKUtilOp.deleteNodeFailSilent(oldClusterZnode));
@ -416,8 +424,8 @@ public class ReplicationQueuesZKImpl extends ReplicationStateZKBase implements R
LOG.trace(" The multi list size is: " + listOfOps.size());
}
ZKUtil.multiOrSequential(this.zookeeper, listOfOps, false);
if (LOG.isTraceEnabled())
LOG.trace("Atomically moved the dead regionserver logs. ");
LOG.info("Atomically moved " + znode + "/" + peerId + "'s WALs to my queue");
return new Pair<>(newPeerId, logQueue);
} catch (KeeperException e) {
// Multi call failed; it looks like some other regionserver took away the logs.

2
hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestReplicationSourceManager.java
View File

@ -629,8 +629,10 @@ public class TestReplicationSourceManager {
List<String> queues = rq.getUnClaimedQueueIds(deadRsZnode);
for(String queue:queues){
Pair<String, SortedSet<String>> pair = rq.claimQueue(deadRsZnode, queue);
if (pair != null) {
logZnodesMap.put(pair.getFirst(), pair.getSecond());
}
}
server.abort("Done with testing", null);
} catch (Exception e) {
LOG.error("Got exception while running NodeFailoverWorker", e);