node health check script should not log "UNHEALTHY" status for every heartbeat
in INFO mode
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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
Priority: Minor
Fix For: 0.21.0
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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