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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5200) AM.ProcessRegionInTransition() and AM.handleRegion() races thus leaving the region assignment inconsistent.
Date Tue, 31 Jan 2012 14:10:10 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13196921#comment-13196921
] 

Hadoop QA commented on HBASE-5200:
----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12512560/HBASE-5200_1.patch
  against trunk revision .

    +1 @author.  The patch does not contain any @author tags.

    -1 tests included.  The patch doesn't appear to include any new or modified tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    -1 javadoc.  The javadoc tool appears to have generated -140 warning messages.

    +1 javac.  The applied patch does not increase the total number of javac compiler warnings.

    -1 findbugs.  The patch appears to introduce 161 new Findbugs (version 1.3.9) warnings.

    +1 release audit.  The applied patch does not increase the total number of release audit
warnings.

    +1 core tests.  The patch passed unit tests in .

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/880//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/880//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/880//console

This message is automatically generated.
                
> AM.ProcessRegionInTransition() and AM.handleRegion() races thus leaving the region assignment
inconsistent.
> -----------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-5200
>                 URL: https://issues.apache.org/jira/browse/HBASE-5200
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.90.5
>            Reporter: ramkrishna.s.vasudevan
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 0.90.7, 0.92.1
>
>         Attachments: HBASE-5200.patch, HBASE-5200_1.patch, TEST-org.apache.hadoop.hbase.master.TestRestartCluster.xml
>
>
> This is the scenario
> Consider a case where the balancer is going on thus trying to close regions in a RS.
> Before we could close a master switch happens.  
> On Master switch the set of nodes that are in RIT is collected and we first get Data
and start watching the node
> After that the node data is added into RIT.
> Now by this time (before adding to RIT) if the RS to which close was called does a transition
in AM.handleRegion() we miss the handling saying RIT state was null.
> {code}
> 2012-01-13 10:50:46,358 WARN org.apache.hadoop.hbase.master.AssignmentManager: Received
CLOSED for region a66d281d231dfcaea97c270698b26b6f from server HOST-192-168-47-205,20020,1326363111288
but region was in  the state null and not in expected PENDING_CLOSE or CLOSING states
> 2012-01-13 10:50:46,358 WARN org.apache.hadoop.hbase.master.AssignmentManager: Received
CLOSED for region c12e53bfd48ddc5eec507d66821c4d23 from server HOST-192-168-47-205,20020,1326363111288
but region was in  the state null and not in expected PENDING_CLOSE or CLOSING states
> 2012-01-13 10:50:46,358 WARN org.apache.hadoop.hbase.master.AssignmentManager: Received
CLOSED for region 59ae13de8c1eb325a0dd51f4902d2052 from server HOST-192-168-47-205,20020,1326363111288
but region was in  the state null and not in expected PENDING_CLOSE or CLOSING states
> 2012-01-13 10:50:46,359 WARN org.apache.hadoop.hbase.master.AssignmentManager: Received
CLOSED for region f45bc9614d7575f35244849af85aa078 from server HOST-192-168-47-205,20020,1326363111288
but region was in  the state null and not in expected PENDING_CLOSE or CLOSING states
> 2012-01-13 10:50:46,359 WARN org.apache.hadoop.hbase.master.AssignmentManager: Received
CLOSED for region cc3ecd7054fe6cd4a1159ed92fd62641 from server HOST-192-168-47-204,20020,1326342744518
but region was in  the state null and not in expected PENDING_CLOSE or CLOSING states
> 2012-01-13 10:50:46,359 WARN org.apache.hadoop.hbase.master.AssignmentManager: Received
CLOSED for region 3af40478a17fee96b4a192b22c90d5a2 from server HOST-192-168-47-205,20020,1326363111288
but region was in  the state null and not in expected PENDING_CLOSE or CLOSING states
> 2012-01-13 10:50:46,359 WARN org.apache.hadoop.hbase.master.AssignmentManager: Received
CLOSED for region e6096a8466e730463e10d3d61f809b92 from server HOST-192-168-47-204,20020,1326342744518
but region was in  the state null and not in expected PENDING_CLOSE or CLOSING states
> 2012-01-13 10:50:46,359 WARN org.apache.hadoop.hbase.master.AssignmentManager: Received
CLOSED for region 4806781a1a23066f7baed22b4d237e24 from server HOST-192-168-47-204,20020,1326342744518
but region was in  the state null and not in expected PENDING_CLOSE or CLOSING states
> 2012-01-13 10:50:46,359 WARN org.apache.hadoop.hbase.master.AssignmentManager: Received
CLOSED for region d69e104131accaefe21dcc01fddc7629 from server HOST-192-168-47-205,20020,1326363111288
but region was in  the state null and not in expected PENDING_CLOSE or CLOSING states
> {code}
> In branch the CLOSING node is created by RS thus leading to more inconsistency.

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