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From "Jason Lowe (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4283) Display tail of aggregated logs by default
Date Wed, 23 May 2012 21:35:41 GMT
Jason Lowe created MAPREDUCE-4283:
-------------------------------------

             Summary: Display tail of aggregated logs by default
                 Key: MAPREDUCE-4283
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4283
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: jobhistoryserver, mrv2
    Affects Versions: 0.23.3, 2.0.1-alpha
            Reporter: Jason Lowe


Similar to the manner in which the nodemanager webUI displays container logs, it would be
very useful if the historyserver showed the trailing 4K or so of the aggregated logs with
a link to see the full log.

When debugging issues the relevant errors are usually at the end of the log, so showing just
the last few K can enable quick diagnosis without waiting for what can be many megabytes of
log data to download. 

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