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From "Hong Tang (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-732) node health check script should not log "UNHEALTHY" status for every heartbeat in INFO mode
Date Wed, 08 Jul 2009 10:40:14 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-732?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12728616#action_12728616
] 

Hong Tang commented on MAPREDUCE-732:
-------------------------------------

It would be better we add log entries every time a node changes its health status (healthy
-> not healthy and vice versa).

> node health check script should not log "UNHEALTHY" status for every heartbeat in INFO
mode
> -------------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-732
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-732
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>    Affects Versions: 0.21.0
>            Reporter: Ramya R
>            Assignee: Sreekanth Ramakrishnan
>            Priority: Minor
>             Fix For: 0.21.0
>
>         Attachments: mapreduce-732.patch
>
>
> Currently, when a TT is blacklisted by the node health check script, for every heartbeat
a message such as the following is being logged.
> {noformat}
> <date> <time> INFO org.apache.hadoop.mapred.JobTracker: Adding blacklisted
reason for tracker : <blacklisted TT> Reason for blacklisting is : NODE_UNHEALTHY
> {noformat}
> Due to this, the the JT logs fill up rapidly clogging the logdirs. Hence this message
should be logged in DEBUG mode instead of INFO mode.

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