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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7268) correct local region location cache information can be overwritten w/stale information from an old server
Date Fri, 11 Jan 2013 23:30:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7268?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13551628#comment-13551628
] 

Hadoop QA commented on HBASE-7268:
----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12564505/HBASE-7268-v7.patch
  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 18 new or modified
tests.

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

    {color:red}-1 findbugs{color}.  The patch appears to introduce 1 new Findbugs (version
1.3.9) 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 core tests{color}.  The patch failed these unit tests:
                       org.apache.hadoop.hbase.TestLocalHBaseCluster

     {color:red}-1 core zombie tests{color}.  There are 8 zombie test(s): 	at org.apache.hadoop.hbase.master.TestMasterFailover.testMasterFailoverWithMockedRITOnDeadRS(TestMasterFailover.java:833)

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/3985//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3985//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop2-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3985//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-examples.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3985//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-protocol.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3985//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop1-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3985//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-common.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3985//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-hadoop-compat.html
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/3985//artifact/trunk/patchprocess/newPatchFindbugsWarningshbase-server.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/3985//console

This message is automatically generated.
                
> correct local region location cache information can be overwritten w/stale information
from an old server
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-7268
>                 URL: https://issues.apache.org/jira/browse/HBASE-7268
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.96.0
>            Reporter: Sergey Shelukhin
>            Assignee: Sergey Shelukhin
>            Priority: Minor
>             Fix For: 0.96.0
>
>         Attachments: 7268-v6.patch, HBASE-7268-v0.patch, HBASE-7268-v0.patch, HBASE-7268-v1.patch,
HBASE-7268-v2.patch, HBASE-7268-v2-plus-masterTs.patch, HBASE-7268-v2-plus-masterTs.patch,
HBASE-7268-v3.patch, HBASE-7268-v4.patch, HBASE-7268-v5.patch, HBASE-7268-v6.patch, HBASE-7268-v7.patch
>
>
> Discovered via HBASE-7250; related to HBASE-5877.
> Test is writing from multiple threads.
> Server A has region R; client knows that.
> R gets moved from A to server B.
> B gets killed.
> R gets moved by master to server C.
> ~15 seconds later, client tries to write to it (on A?).
> Multiple client threads report from RegionMoved exception processing logic "R moved from
C to B", even though such transition never happened (neither in nor before the sequence described
below). Not quite sure how the client learned of the transition to C, I assume it's from meta
from some other thread...
> Then, put fails (it may fail due to accumulated errors that are not logged, which I am
investigating... but the bogus cache update is there nonwithstanding).
> I have a patch but not sure if it works, test still fails locally for yet unknown reason.

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