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From Jinal Shah <jinalshah2...@gmail.com>
Subject WARN messages clarifications
Date Wed, 01 Oct 2014 14:58:21 GMT
Hi everyone

We are seeing these WARN log messages from this class
com.cerner.hbase.extensions.OutlierHTableInterceptorFactory$OutlierHTable.
It normally happens when the query takes a long time to execute and
displays the duration as well like this

Duration Threshold exceeded: [durationThreshold=1000]
Actuals: [actualBatchSize=1: actualPayloadSize=0: actualDuration=3929]

The scenarios I found for the delay are


   - Network issues taking time for delays
   - Trying to establish a connection for the first time
   - Some component failures occurred like Zookeeper node when down or
   Master failed over.


So can someone give say what other possible scenarios for delays in
executing a query.

Thanks
Jinal

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