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From "Hadoop QA (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5153) HConnection re-creation in HTable after HConnection abort
Date Thu, 12 Jan 2012 18:41:40 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5153?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13185135#comment-13185135
] 

Hadoop QA commented on HBASE-5153:
----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12510397/5153-trunk.txt
  against trunk revision .

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

    +1 tests included.  The patch appears to include 3 new or modified tests.

    -1 javadoc.  The javadoc tool appears to have generated -147 warning messages.

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

    -1 findbugs.  The patch appears to introduce 80 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 failed these unit tests:
                       org.apache.hadoop.hbase.replication.TestReplicationPeer
                  org.apache.hadoop.hbase.mapreduce.TestHFileOutputFormat
                  org.apache.hadoop.hbase.mapred.TestTableMapReduce
                  org.apache.hadoop.hbase.mapreduce.TestImportTsv

Test results: https://builds.apache.org/job/PreCommit-HBASE-Build/748//testReport/
Findbugs warnings: https://builds.apache.org/job/PreCommit-HBASE-Build/748//artifact/trunk/patchprocess/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/748//console

This message is automatically generated.
                
> HConnection re-creation in HTable after HConnection abort
> ---------------------------------------------------------
>
>                 Key: HBASE-5153
>                 URL: https://issues.apache.org/jira/browse/HBASE-5153
>             Project: HBase
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 0.90.4
>            Reporter: Jieshan Bean
>            Assignee: Jieshan Bean
>             Fix For: 0.90.6
>
>         Attachments: 5153-trunk.txt, HBASE-5153-V2.patch, HBASE-5153-V3.patch, HBASE-5153-V4-90.patch,
HBASE-5153-trunk.patch, HBASE-5153.patch
>
>
> HBASE-4893 is related to this issue. In that issue, we know, if multi-threads share a
same connection, once this connection got abort in one thread, the other threads will got
a "HConnectionManager$HConnectionImplementation@18fb1f7 closed" exception.
> It solve the problem of "stale connection can't removed". But the orignal HTable instance
cann't be continue to use. The connection in HTable should be recreated.
> Actually, there's two aproach to solve this:
> 1. In user code, once catch an IOE, close connection and re-create HTable instance. We
can use this as a workaround.
> 2. In HBase Client side, catch this exception, and re-create connection.

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