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From Weishung Chung <weish...@gmail.com>
Subject Re: customize partitioning of regionserver
Date Mon, 10 Jan 2011 19:02:08 GMT
Thanks for the reply.
In my use case, I have to retrieve a range of data usually by month and
operate on them before reinserting them, so it would be nice if i could
partition by month but then I don't know how would the partition affect the
mapreduce job.

On Mon, Jan 10, 2011 at 12:48 PM, Buttler, David <buttler1@llnl.gov> wrote:

> Not to my knowledge.  Partitions are dynamically determined. As your table
> grows, regions become too large and are split roughly in half.  This
> prevents unbalanced regions.  Any predetermined partitioning will ultimately
> fail because you don't know your data as well as you think you do.
> Dave
> -----Original Message-----
> From: Weishung Chung [mailto:weishung@gmail.com]
> Sent: Monday, January 10, 2011 10:14 AM
> To: user@hbase.apache.org
> Subject: customize partitioning of regionserver
> Does HBase have the capability to partition dataset by range like the MySQL
> partitioning eg. partition the datetime, row key by month?
> Thank you.

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