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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-11802) DomainSocketWatcher thread terminates sometimes after there is an I/O error during requestShortCircuitShm
Date Wed, 15 Apr 2015 08:05:00 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-11802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14495835#comment-14495835
] 

Hadoop QA commented on HADOOP-11802:
------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12725472/HADOOP-11802.002.patch
  against trunk revision fddd552.

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 1 new or modified
test files.

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

    {color:green}+1 javadoc{color}.  There were no new javadoc warning messages.

    {color:green}+1 eclipse:eclipse{color}.  The patch built with eclipse:eclipse.

    {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 core tests{color}.  The patch passed unit tests in hadoop-common-project/hadoop-common
hadoop-hdfs-project/hadoop-hdfs.

Test results: https://builds.apache.org/job/PreCommit-HADOOP-Build/6103//testReport/
Console output: https://builds.apache.org/job/PreCommit-HADOOP-Build/6103//console

This message is automatically generated.

> DomainSocketWatcher thread terminates sometimes after there is an I/O error during requestShortCircuitShm
> ---------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-11802
>                 URL: https://issues.apache.org/jira/browse/HADOOP-11802
>             Project: Hadoop Common
>          Issue Type: Bug
>    Affects Versions: 2.7.0
>            Reporter: Eric Payne
>            Assignee: Colin Patrick McCabe
>         Attachments: HADOOP-11802.001.patch, HADOOP-11802.002.patch
>
>
> In {{DataXceiver#requestShortCircuitShm}}, we attempt to recover from some errors by
closing the {{DomainSocket}}.  However, this violates the invariant that the domain socket
should never be closed when it is being managed by the {{DomainSocketWatcher}}.  Instead,
we should call {{shutdown}} on the {{DomainSocket}}.  When this bug hits, it terminates the
{{DomainSocketWatcher}} thread.



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