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Too many RPC requests for metrics processing. Start dropping them

Question asked by oae on Apr 23, 2013
Latest reply on Apr 24, 2013 by yufeldman
Having a jobtracker log which contains a lot of:

> "com.mapr.job.mngmnt.hadoop.metrics.MaprRPCContext:
> Too many RPC requests for metrics
> processing. Start dropping them"

What does that mean ?
Also at least one of the reducers takes super long (several hours instead of minutes like the other), and then the job dies with:

"org.apache.hadoop.mapred.TaskInProgress: Error from attempt_201304081120_23147_m_000051_0: Lost task tracker"

Could that be related ?

Johannes

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