[jira] Commented: (MAPREDUCE-1160) Two log statements at INFO level fill up jobtracker logs

["gary murry (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12773187#action_12773187 ] 

gary murry commented on MAPREDUCE-1160:
---------------------------------------

I agree that this does not need unit testing, because we are just changing the log level of the items, but we do need to test have tests for log entries when we can.  We rely on logging to help debug issues in the wild and need to have assurance that they are working correctly.  Thanks.

> Two log statements at INFO level fill up jobtracker logs
> --------------------------------------------------------
>
>                 Key: MAPREDUCE-1160
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1160
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: jobtracker
>            Reporter: Hemanth Yamijala
>            Assignee: Ravi Gummadi
>             Fix For: 0.22.0
>
>         Attachments: MAPREDUCE-1160-20.patch, MR-1160-2.patch, MR-1160.patch
>
>
> There are two log statements being logged at an INFO level that are unnecessarily filling up JT logs. This is making it difficult to debug issues on large cluster systems.
> The two statements identified are the following:
> INFO org.apache.hadoop.mapred.JobInProgress: No reduces to schedule for <jobid>
> and
> INFO org.apache.hadoop.mapred.ResourceEstimator: completedMapsUpdates:22  completedMapsInputSize:656  completedMapsOutputSize:6299

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