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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11659) Region state RPC call is not idempotent
Date Fri, 08 Aug 2014 21:43:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14091333#comment-14091333
] 

Hadoop QA commented on HBASE-11659:
-----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12660667/HBASE-11659.patch
  against trunk revision .
  ATTACHMENT ID: 12660667

    {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
tests.

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

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

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

    {color:green}+1 findbugs{color}.  The patch does not introduce any new Findbugs (version
2.0.3) warnings.

    {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:green}+1 core tests{color}.  The patch passed unit tests in .

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/10360//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10360//artifact/patchprocess/newPatchFindbugsWarningshbase-prefix-tree.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10360//artifact/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10360//artifact/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10360//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10360//artifact/patchprocess/newPatchFindbugsWarningshbase-client.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10360//artifact/patchprocess/newPatchFindbugsWarningshbase-thrift.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10360//artifact/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10360//artifact/patchprocess/newPatchFindbugsWarningshbase-server.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/10360//artifact/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/10360//console

This message is automatically generated.

> Region state RPC call is not idempotent
> ---------------------------------------
>
>                 Key: HBASE-11659
>                 URL: https://issues.apache.org/jira/browse/HBASE-11659
>             Project: HBase
>          Issue Type: Bug
>          Components: Region Assignment
>            Reporter: Virag Kothari
>            Assignee: Virag Kothari
>         Attachments: HBASE-11659.patch, HBASE-11659.patch, hbase-11604_v2.patch
>
>
> Here is the scenario on 0.98 with zk-less assignment
> The master gets an OPEN RPC call from region server.
> So, it moves the region state from PENDING_OPEN to OPEN.
> But, the call timeouts on the region server and region server retries sending the OPEN
call. However, now the master throws an Exception saying the region is not PENDING_OPEN. So,
the region servers aborts the region on receiving that exception and sends FAILED_OPEN to
master. But the master cannot change its state from FAILED_OPEN to OPEN, so eventually the
master keeps the state as OPEN while the actual region is no longer open on region server.
> The master should not throw an exception on receiving OPEN RPC calls multiple times.



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