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Date: Mon, 22 Oct 2012 15:06:13 +0000 (UTC)
From: "Jason Lowe (JIRA)" <jira@apache.org>
To: mapreduce-dev@hadoop.apache.org
Message-ID: <1821024032.10008.1350918373097.JavaMail.jiratomcat@arcas>
Subject: [jira] [Created] (MAPREDUCE-4741) WARN and ERROR messages logged
 during normal AM shutdown
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Jason Lowe created MAPREDUCE-4741:
-------------------------------------

             Summary: WARN and ERROR messages logged during normal AM shutdown
                 Key: MAPREDUCE-4741
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4741
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: applicationmaster, mrv2
    Affects Versions: 2.0.1-alpha, 0.23.3
            Reporter: Jason Lowe
            Priority: Minor


The ApplicationMaster is logging WARN and ERROR messages during normal shutdown, and some users are misinterpreting these as serious problems.  For example:

{noformat}
2012-10-02 13:58:50,247 ERROR [ContainerLauncher Event Handler] org.apache.hadoop.mapreduce.v2.app.launcher.ContainerLauncherImpl: Returning, interrupted : java.lang.InterruptedException
[...]
2012-10-02 13:58:50,248 ERROR [Thread-47] org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator: Returning, interrupted : java.lang.InterruptedException
2012-10-02 13:58:50,248 WARN [RMCommunicator Allocator] org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator: Allocated thread interrupted. Returning.
[...]
2012-10-02 13:58:50,367 ERROR [TaskCleaner Event Handler] org.apache.hadoop.mapreduce.v2.app.taskclean.TaskCleanerImpl: Returning, interrupted : java.lang.InterruptedException
{noformat}

Warnings or errors should not be logged if everything is working as intended.

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