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From Lars George <lars.geo...@gmail.com>
Subject Re: Correlating traffic with regions
Date Wed, 17 Nov 2010 16:15:39 GMT
JD,

Should we create a metric for it so that it dynamically counts per
region its usage? That can then be exposed via Ganglia context or JMX.
Just wondering.

Lars

On Wed, Nov 17, 2010 at 5:04 PM, Vaibhav Puranik <vpuranik@gmail.com> wrote:
> hi,
>
> Thanks for the suggestions JD & Michael.
> The region servers serving ROOT & META regions are fine.
>
> I will try analysing tcpdump output.
>
> Regards,
> Vaibhav
> GumGum
>
>
>
> On Tue, Nov 16, 2010 at 7:15 AM, Michael Segel <michael_segel@hotmail.com>wrote:
>
>>
>> Beyond this... which region is serving your ROOT and meta data?
>>
>> That node will probably get a higher load.
>> Also, how many disks do you have and how many nodes?
>> You could see higher CPU loads if you're I/O bound.
>>
>> > Date: Mon, 15 Nov 2010 18:24:31 -0800
>> > Subject: Re: Correlating traffic with regions
>> > From: jdcryans@apache.org
>> > To: user@hbase.apache.org
>> >
>> > Yeah this is one area where HBase could do a much better job...
>> > because there's not really a way to do it within the database. One
>> > thing you can do is to tcpdump a few seconds of traffic on that node
>> > and decipher which tables (shown in the region name) are being used.
>> >
>> > J-D
>> >
>> > On Mon, Nov 15, 2010 at 5:17 PM, Vaibhav Puranik <vpuranik@gmail.com>
>> wrote:
>> > > Hi all,
>> > >
>> > > We are running 0.20.6 in production.
>> > >
>> > > On one of our nodes, we are seeing CPU (all 8 CPUS) hovering near 60%.
>> But
>> > > the node has many tables and many regions on it.
>> > >
>> > > Is there an easy way to find out which of these regions or tables are
>> > > getting most of the traffic?
>> > >
>> > > Regards,
>> > > Vaibhav Purnaik
>> > > GumGum
>> > >
>>
>>
>

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