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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16367) Race between master and region server initialization may lead to premature server abort
Date Mon, 17 Apr 2017 16:37:42 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15971313#comment-15971313
] 

Hudson commented on HBASE-16367:
--------------------------------

SUCCESS: Integrated in Jenkins build HBase-1.3-JDK7 #145 (See [https://builds.apache.org/job/HBase-1.3-JDK7/145/])
HBASE-17902 Backport HBASE-16367 "Race between master and region server (tedyu: rev 0e95c8156ac5ac507827ff5eb4504a42fa22b454)
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegionServer.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/master/HMaster.java


> Race between master and region server initialization may lead to premature server abort
> ---------------------------------------------------------------------------------------
>
>                 Key: HBASE-16367
>                 URL: https://issues.apache.org/jira/browse/HBASE-16367
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 1.1.2
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>             Fix For: 2.0.0, 1.4.0
>
>         Attachments: 16367.addendum, 16367.v1.txt, 16367.v2.txt, 16367.v3.txt, 63908-master.log
>
>
> I was troubleshooting a case where hbase (1.1.2) master always dies shortly after start
- see attached master log snippet.
> It turned out that master initialization thread was racing with HRegionServer#preRegistrationInitialization()
(initializeZooKeeper, actually) since HMaster extends HRegionServer.
> Through additional logging in master:
> {code}
>     this.oldLogDir = createInitialFileSystemLayout();
>     HFileSystem.addLocationsOrderInterceptor(conf);
>     LOG.info("creating splitLogManager");
> {code}
> I found that execution didn't reach the last log line before region server declared cluster
Id being null.



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