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From Dmitriy Lyubimov <dlyubi...@apache.org>
Subject Re: RPC metrics coming up as 0
Date Thu, 21 Apr 2011 01:37:36 GMT
I also saw several calls statistics where min=max>0 but average and
num ops are 0. Can't be. Min and Max seem to be working but not
averages and num ops. Any idea why it might be?


On Wed, Apr 20, 2011 at 6:04 PM, Dmitriy Lyubimov <dlyubimov@apache.org> wrote:
> PS. I can kind of beleive that avg time is 0, but numOps surely can't be 0?
> On Wed, Apr 20, 2011 at 5:39 PM, Dmitriy Lyubimov <dlyubimov@apache.org> wrote:
>> Hi,
>> so i enabled metrics with JConsole as described in the metrics page.
>> (well actually some names have changed in hbase-env.sh so it's not
>> verbatim).
>> So what i am seeing is that for rpc metrics on a regionserver, only
>> maxTime metric seems to change for rpcProcessingTime and rpcQueueTime.
>> The rest of them, including avg and numOps, are 0.
>> But i know for a fact that there are requests piling up which is
>> indirectly confirmed by hit counts running up very quickly for block
>> cache hit metric.
>> Any idea why i am still not seeing meaningful hbase rpc metric counts?
>> Thanks in advance.
>> -Dmitriy

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