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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-7283) Bump DataNode OOM log from WARN to ERROR
Date Fri, 24 Oct 2014 09:20:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-7283?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14182620#comment-14182620
] 

Hadoop QA commented on HDFS-7283:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12676731/HDFS-7283.1.patch
  against trunk revision 0942c99.

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

    {color:red}-1 tests included{color}.  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.

    {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:red}-1 core tests{color}.  The following test timeouts occurred in hadoop-hdfs-project/hadoop-hdfs:

org.apache.hadoop.hdfs.server.namenode.ha.TestGetGroupsWithHA

    {color:green}+1 contrib tests{color}.  The patch passed contrib unit tests.

Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/8519//testReport/
Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/8519//console

This message is automatically generated.

> Bump DataNode OOM log from WARN to ERROR
> ----------------------------------------
>
>                 Key: HDFS-7283
>                 URL: https://issues.apache.org/jira/browse/HDFS-7283
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: datanode
>    Affects Versions: 2.0.0-alpha
>            Reporter: Stephen Chu
>            Assignee: Stephen Chu
>            Priority: Trivial
>              Labels: supportability
>         Attachments: HDFS-7283.1.patch
>
>
> When the DataNode OOMs, it logs the following WARN message which should be bumped up
to ERROR because DataNode OOM often leads to DN process abortion.
> {code}
> WARN org.apache.hadoop.hdfs.server.datanode.DataNode: DataNode is out of memory. Will
retry in 30 seconds. 
> 4751 java.lang.OutOfMemoryError: unable to create new native thread"
> {code}
> Thanks to Roland Teague for identifying this.



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