Kihwal Lee created MAPREDUCE-4308:
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Summary: Remove excessive split log messages
Key: MAPREDUCE-4308
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4308
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: jobtracker
Affects Versions: 1.0.3
Reporter: Kihwal Lee
Fix For: 1.1.0
Job tracker currently prints out information on every split.
{noformat}
2012-05-20 00:06:01,985 INFO org.apache.hadoop.mapred.JobInProgress:
tip:task_201205100740_1745_m_000000 has split on node:/192.168.0.1
/my.totally.madeup.host.com
{noformat}
I looked at one cluster and these messages were taking up more than 30% of the
JT log. If jobs have large number of maps, it can be worse. I think it is
reasonable to lower the log level of the statement from INFO to DEBUG.
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