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https://issues.apache.org/jira/browse/MAPREDUCE-5723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13881876#comment-13881876
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Hudson commented on MAPREDUCE-5723:
-----------------------------------
SUCCESS: Integrated in Hadoop-Hdfs-trunk #1653 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/1653/])
MAPREDUCE-5723. MR AM container log can be truncated or empty. (Mohammad Kamrul
Islam via kasha) (kasha:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1560592)
* /hadoop/common/trunk/hadoop-mapreduce-project/CHANGES.txt
*
/hadoop/common/trunk/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/MRAppMaster.java
> MR AM container log can be truncated or empty
> ---------------------------------------------
>
> Key: MAPREDUCE-5723
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5723
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: applicationmaster
> Affects Versions: 2.2.0
> Reporter: Mohammad Kamrul Islam
> Assignee: Mohammad Kamrul Islam
> Priority: Blocker
> Fix For: 2.4.0
>
> Attachments: MAPREDUCE-5723.1.patch, MAPREDUCE-5723.2.patch,
> MAPREDUCE-5723.3.patch, MAPREDUCE-5723.4.patch
>
>
> It occurs when the property "mapreduce.task.userlog.limit.kb" is set non-zero
> in mapped-site.xml.
> AM container syslog remains empty if any exception occurs.
> Bug details:
> In MRAppMaster.java, the following code snippets show the bug.
> {code}
> } catch (Throwable t) {
> LOG.fatal("Error starting MRAppMaster", t);
> System.exit(1);
> }finally {
> LogManager.shutdown();
> }
> {code}
> In the catch block, we are exiting the JVM. So finally block (therefore
> LogManager.shutdown()) is never executed.
> Possible fix:
> Make sure LogManager.shutdown() is executed in all cases.
>
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