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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7121) Exceptions while serializing IPC call response are not handled well
Date Wed, 01 Jun 2011 01:34:47 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13041930#comment-13041930
] 

Hadoop QA commented on HADOOP-7121:
-----------------------------------

+1 overall.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12481024/hadoop-7121.txt
  against trunk revision 1129905.

    +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 did not generate any warning messages.

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

    +1 findbugs.  The patch does not introduce any 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 core unit tests.

    +1 system test framework.  The patch passed system test framework compile.

Test results: https://builds.apache.org/hudson/job/PreCommit-HADOOP-Build/551//testReport/
Findbugs warnings: https://builds.apache.org/hudson/job/PreCommit-HADOOP-Build/551//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: https://builds.apache.org/hudson/job/PreCommit-HADOOP-Build/551//console

This message is automatically generated.

> Exceptions while serializing IPC call response are not handled well
> -------------------------------------------------------------------
>
>                 Key: HADOOP-7121
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7121
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ipc
>    Affects Versions: 0.22.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Critical
>              Labels: newbie
>             Fix For: 0.22.0
>
>         Attachments: hadoop-7121.txt, hadoop-7121.txt
>
>
> We had a situation where for some reason the serialization of an RPC call's response
was throwing OOME. When this happens, the exception is not caught, and the call never gets
a response - the client just hangs. Additionally, the OOME propagated all the way to the top
of the IPC handler and caused the handler. Plus, the Handler upon exit only logged to stdout
and not to the log4j logs.

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