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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Verifying the distribution of data across region servers - hotspotting
Date Thu, 15 Oct 2015 22:15:46 GMT
Here're a few metrics (per server) to consider for finding hot spot:

read request count
write request count
compaction queue size
memstore size

Cheers

On Thu, Oct 15, 2015 at 2:51 PM, Gevorg Hari <gevorghari@gmail.com> wrote:

> Hello,
>
> I'm afraid that my cluster is suffering of a bit of hotspotting, what's the
> best way to verify that?
>
> Is it enough to verify the data size handled by each regionserver with the
> hdfs dfs -du command? Is there a way to easily count the number of records
> handled by each regionserver? How about the number of read/writes handled
> by each of them?
>
> Thanks!
> Gevorg
>

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