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https://issues.apache.org/jira/browse/HBASE-19694?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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stack updated HBASE-19694:
--------------------------
Attachment: HBASE-19694.branch-2.002.patch
> The initialization order for a fresh cluster is incorrect
> ---------------------------------------------------------
>
> Key: HBASE-19694
> URL: https://issues.apache.org/jira/browse/HBASE-19694
> Project: HBase
> Issue Type: Bug
> Reporter: Duo Zhang
> Assignee: stack
> Priority: Critical
> Fix For: 2.0.0-beta-1
>
> Attachments: HBASE-19694.branch-2.001.patch,
> HBASE-19694.branch-2.002.patch
>
>
> The cluster id will set once we become the active master in
> finishActiveMasterInitialization, but the blockUntilBecomingActiveMaster and
> finishActiveMasterInitialization are both called in a thread to make the
> constructor of HMaster return without blocking. And since HMaster itself is
> also a HRegionServer, it will create a Connection and then start calling
> reportForDuty. And when creating the ConnectionImplementation, we will read
> the cluster id from zk, but the cluster id may have not been set yet since it
> is set in another thread, we will get an exception and use the default
> cluster id instead.
> I always get this when running UTs which will start a mini cluster
> {noformat}
> 2018-01-03 15:16:37,916 WARN [M:0;zhangduo-ubuntu:32848]
> client.ConnectionImplementation(528): Retrieve cluster id failed
> java.util.concurrent.ExecutionException:
> org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode =
> NoNode for /hbase/hbaseid
> at
> java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357)
> at
> java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1895)
> at
> org.apache.hadoop.hbase.client.ConnectionImplementation.retrieveClusterId(ConnectionImplementation.java:526)
> at
> org.apache.hadoop.hbase.client.ConnectionImplementation.<init>(ConnectionImplementation.java:286)
> at
> org.apache.hadoop.hbase.client.ConnectionUtils$ShortCircuitingClusterConnection.<init>(ConnectionUtils.java:141)
> at
> org.apache.hadoop.hbase.client.ConnectionUtils$ShortCircuitingClusterConnection.<init>(ConnectionUtils.java:137)
> at
> org.apache.hadoop.hbase.client.ConnectionUtils.createShortCircuitConnection(ConnectionUtils.java:185)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.createClusterConnection(HRegionServer.java:781)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.setupClusterConnection(HRegionServer.java:812)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.preRegistrationInitialization(HRegionServer.java:827)
> at
> org.apache.hadoop.hbase.regionserver.HRegionServer.run(HRegionServer.java:938)
> at org.apache.hadoop.hbase.master.HMaster.run(HMaster.java:550)
> at java.lang.Thread.run(Thread.java:748)
> Caused by: org.apache.zookeeper.KeeperException$NoNodeException:
> KeeperErrorCode = NoNode for /hbase/hbaseid
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:111)
> at org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
> at
> org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient$ZKTask$1.exec(ReadOnlyZKClient.java:163)
> at
> org.apache.hadoop.hbase.zookeeper.ReadOnlyZKClient.run(ReadOnlyZKClient.java:311)
> ... 1 more
> {noformat}
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