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From "Christian Kunz (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-1983) jobs using pipes interface with tasks not using java output format have a good chance of not updating progress and timing out
Date Tue, 02 Oct 2007 05:27:50 GMT
jobs using pipes interface with tasks not using java output format have a good chance of not
updating progress and timing out
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                 Key: HADOOP-1983
                 URL: https://issues.apache.org/jira/browse/HADOOP-1983
             Project: Hadoop
          Issue Type: Bug
          Components: pipes
    Affects Versions: 0.15.0
            Reporter: Christian Kunz


When using C++-pipes interface, mappers/reducers not emitting any key-values pairs, but running
longer than 'mapred.task.timeout' might timeout even when they send periodical status updates
upstream.

The cause of the problem is that all upstream messages are buffered. Progress and status updates
should be flushed immediately.

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