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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-19694) The initialization order for a fresh cluster is incorrect
Date Wed, 10 Jan 2018 16:55:00 GMT

     [ https://issues.apache.org/jira/browse/HBASE-19694?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HBASE-19694:
--------------------------
    Attachment: HBASE-19694.branch-2.005.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,
HBASE-19694.branch-2.003.patch, HBASE-19694.branch-2.004.patch, HBASE-19694.branch-2.005.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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