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https://issues.apache.org/jira/browse/HBASE-8519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13656409#comment-13656409
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Jean-Daniel Cryans commented on HBASE-8519:
-------------------------------------------
bq. + if (clusterShutDown.get() && !clusterStatusTracker.isClusterUp()) {
Do we still need the second statement?
Also I'm not a fan of clusterShutDown's name since the cluster could be down
when the master starts, or at least we need to doc more to explain why we don't
care if the cluster is down when we start.
> Backup master will never come up if primary master dies during initialization
> -----------------------------------------------------------------------------
>
> Key: HBASE-8519
> URL: https://issues.apache.org/jira/browse/HBASE-8519
> Project: HBase
> Issue Type: Bug
> Components: master
> Affects Versions: 0.94.7, 0.95.0
> Reporter: Jerry He
> Assignee: Jerry He
> Priority: Minor
> Fix For: 0.98.0
>
> Attachments: HBASE-8519-trunk.patch
>
>
> The problem happens if primary master dies after becoming master but before
> it completes initialization and calls clusterStatusTracker.setClusterUp(),
> The backup master will try to become the master, but will shutdown itself
> promptly because it sees 'the cluster is not up'.
> This is the backup master log:
> 2013-05-09 15:08:05,568 INFO
> org.apache.hadoop.hbase.master.metrics.MasterMetrics: Initialized
> 2013-05-09 15:08:05,573 DEBUG org.apache.hadoop.hbase.master.HMaster: HMaster
> started in backup mode. Stalling until master znode is written.
> 2013-05-09 15:08:05,589 INFO
> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper: Node /hbase/master
> already exists and this is not a retry
> 2013-05-09 15:08:05,590 INFO
> org.apache.hadoop.hbase.master.ActiveMasterManager: Adding ZNode for
> /hbase/backup-masters/xxx.com,60000,1368137285373 in backup master directory
> 2013-05-09 15:08:05,595 INFO
> org.apache.hadoop.hbase.master.ActiveMasterManager: Another master is the
> active master, xxx.com,60000,1368137283107; waiting to become the next active
> master
> 2013-05-09 15:09:45,006 DEBUG
> org.apache.hadoop.hbase.master.ActiveMasterManager: No master available.
> Notifying waiting threads
> 2013-05-09 15:09:45,006 INFO org.apache.hadoop.hbase.master.HMaster: Cluster
> went down before this master became active
> 2013-05-09 15:09:45,006 DEBUG org.apache.hadoop.hbase.master.HMaster:
> Stopping service threads
> 2013-05-09 15:09:45,006 INFO org.apache.hadoop.ipc.HBaseServer: Stopping
> server on 60000
>
> In ActiveMasterManager::blockUntilBecomingActiveMaster()
> {code}
> ..
> if (!clusterStatusTracker.isClusterUp()) {
> this.master.stop(
> "Cluster went down before this master became active");
> }
> ..
> {code}
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