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From Dima Spivak <dspi...@cloudera.com>
Subject Re: HBase Compaction Issues
Date Mon, 02 Feb 2015 18:29:04 GMT
Hey Joseph,

I suspect you're hitting hotspotting (see
http://hbase.apache.org/book.html#rowkey.design). Moving forward, you might
want to consider something like OpenTSDB for your time series data.

-Dima

On Mon, Feb 2, 2015 at 1:18 AM, joseph <josephj@arssoftware.com> wrote:

> Hi,
>
>
>
> We are using HBase 0.94 and Hadoop 2.0.0 .We are using CDH 4.7
>
>
>
> We have a  4 node cluster with one master and the 3 region servers
>
>
>
> We Have  time series data.  We have row key with the format of
> Reversetimestamp_id. We have client connection timeout in the modules and
> constantly facing compaction queue size alert in the Cloudera manager. We
> disable compaction by changing the settings in the Cloudera HBase
> configuration .Then we are compact tables manually using the cron
> scheduler.
> But still compaction are triggering and the Cloudera manager always shows
> compaction queue size alert .Modules still facing timeout with the HBase
>
>
>
>
>
> Regards,
>
> Joseph
>
>
>
>

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