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From Stack <st...@duboce.net>
Subject Re: Batch Get performance degrades from within Mapreduce
Date Mon, 20 Feb 2012 20:39:44 GMT
On Mon, Feb 20, 2012 at 12:04 PM, Himanish Kushary <himanish@gmail.com> wrote:
> Also to add , from the map-reduce we have started seeing
> org.apache.hadoop.hbase.client.ScannerTimeoutException: 360388ms
> passed since the last invocation, timeout is currently set to 300000
> due to the extremely high time spent on firing the batch Gets

What is your concurrency like (How many concurrent mappers?).  Where
is the time being spent?  In the server, in the mapper?  Why are you
having scanner timeouts if you are doing big batch Gets?


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