Mailing-List: contact mapreduce-issues-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Reply-To: mapreduce-issues@hadoop.apache.org
Date: Tue, 10 Jul 2012 15:27:35 +0000 (UTC)
From: "Robert Joseph Evans (JIRA)" <jira@apache.org>
To: mapreduce-issues@hadoop.apache.org
Message-ID: <1018787558.28640.1341934055704.JavaMail.jiratomcat@issues-vm>
Subject: [jira] [Created] (MAPREDUCE-4423) Potential infinet fetching of map
 output
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit

Robert Joseph Evans created MAPREDUCE-4423:
----------------------------------------------

             Summary: Potential infinet fetching of map output
                 Key: MAPREDUCE-4423
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4423
             Project: Hadoop Map/Reduce
          Issue Type: Bug
          Components: mrv2
    Affects Versions: 0.23.3, 2.0.1-alpha, 3.0.0
            Reporter: Robert Joseph Evans
            Assignee: Robert Joseph Evans


Inside Fetcher.java there are a few cases where an error can happen and the corresponding map task is not marked as a fetch failure.  One of these is if the Shuffle server returns a malformed result.

MAPREDUCE-3992 makes this case a lot less common, but it is still possible.  IF the shuffle handler always returns a malformed result, but a OK response the Fetcher will never stop trying to fetch those results. 

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira