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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-9918) MasterAddressTracker & ZKNamespaceManager ZK listeners are missed after master recovery
Date Fri, 08 Nov 2013 23:08:17 GMT

    [ https://issues.apache.org/jira/browse/HBASE-9918?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13817816#comment-13817816

Hadoop QA commented on HBASE-9918:

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 3 new or modified

    {color:green}+1 hadoop1.0{color}.  The patch compiles against the hadoop 1.0 profile.

    {color:green}+1 hadoop2.0{color}.  The patch compiles against the hadoop 2.0 profile.

    {color:green}+1 javadoc{color}.  The javadoc tool did not generate any warning messages.

    {color:red}-1 javac{color}.  The patch appears to cause mvn compile goal to fail.

    {color:red}-1 findbugs{color}.  The patch appears to cause Findbugs (version 1.3.9) to

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 lineLengths{color}.  The patch does not introduce lines longer than 100

    {color:red}-1 site{color}.  The patch appears to cause mvn site goal to fail.

     {color:red}-1 core tests{color}.  The patch failed these unit tests:

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/7801//testReport/
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/7801//console

This message is automatically generated.

> MasterAddressTracker & ZKNamespaceManager ZK listeners are missed after master recovery
> ---------------------------------------------------------------------------------------
>                 Key: HBASE-9918
>                 URL: https://issues.apache.org/jira/browse/HBASE-9918
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Jeffrey Zhong
>            Assignee: Jeffrey Zhong
>         Attachments: HBase-9918.patch, hbase-9918.v2.patch
> TestZooKeeper#testRegionAssignmentAfterMasterRecoveryDueToZKExpiry always failed at the
following verification for me in my dev env(you have to run the single test  not the whole
TestZooKeeper suite to reproduce)
> {code}
> assertEquals("Number of rows should be equal to number of puts.", numberOfPuts, numberOfRows);
> {code}
> We missed two ZK listeners after master recovery MasterAddressTracker & ZKNamespaceManager.

> My current patch is to fix the JIRA issue while I'm wondering if we should totally remove
the master failover implementation when ZK session expired because this causes reinitialize
HMaster partially which is error prone and not a clean state to start from. 

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