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From "James Kinley (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-4517) Too many INFO messages written out during AM to RM heartbeat
Date Sun, 05 Aug 2012 19:42:02 GMT
James Kinley created MAPREDUCE-4517:
---------------------------------------

             Summary: Too many INFO messages written out during AM to RM heartbeat
                 Key: MAPREDUCE-4517
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4517
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: applicationmaster
    Affects Versions: 2.0.0-alpha
            Reporter: James Kinley
            Priority: Minor


Too many INFO log messages written out during AM to RM heartbeat. Based on default frequency
of 1000ms (scheduler.heartbeat.interval-ms) either 2 or 4 INFO messages are written out per
second:

LOG.info("Before Scheduling: " + getStat());
List<Container> allocatedContainers = getResources();
LOG.info("After Scheduling: " + getStat());
if (allocatedContainers.size() > 0) {
  LOG.info("Before Assign: " + getStat());
  scheduledRequests.assign(allocatedContainers);
  LOG.info("After Assign: " + getStat());
}

These should probably be changed to DEBUG message to save the log growing too quickly.

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