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https://issues.apache.org/jira/browse/MAPREDUCE-5723?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Lowe updated MAPREDUCE-5723:
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Priority: Critical (was: Major)
Target Version/s: 2.4.0
Fix Version/s: (was: 2.2.0)
(was: trunk)
Summary: MR AM container log truncated on normal execution or
empty if exception occurs (was: MR AM container log empty if exception occurs)
Elevating priority and updating the summary since this is subsuming
MAPREDUCE-5730, and AM logs are essentially broken since MAPREDUCE-5694.
Also the Fix Version/s field in JIRA should only be filled out when the patch
is committed to indicate where it has been fixed. The Target Version/s field
indicates where the JIRA is targeted to be fixed.
> MR AM container log truncated on normal execution or empty if exception occurs
> ------------------------------------------------------------------------------
>
> 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: Critical
> Attachments: MAPREDUCE-5723.1.patch, MAPREDUCE-5723.2.patch,
> MAPREDUCE-5723.3.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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