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From Jean-Marc Spaggiari <jean-m...@spaggiari.org>
Subject Re: is it a good idea to disable tables not currently hot?
Date Fri, 18 Mar 2016 16:28:59 GMT
Hi Frank,

It might be doable.

What HBase version are you running?


2016-03-18 12:25 GMT-04:00 Frank Luo <jluo@merkleinc.com>:

> No one has experience disabling tables?
> -----Original Message-----
> From: Frank Luo [mailto:jluo@merkleinc.com]
> Sent: Thursday, March 17, 2016 4:51 PM
> To: user@hbase.apache.org
> Subject: is it a good idea to disable tables not currently hot?
> We have a multi tenants environment and each client occupies x number of
> hbase regions. We currently have about 500 regions per region server and I
> understand the guideline is less than 200. So we need to reduce the region
> counts. Increasing region file size is no more an option because we are
> already at 5G and I don’t want to go higher.
> Due to our unique use cases, all clients are running for a few hours in a
> day, then being quiet for the rest of time. So I am thinking whether it is
> a good idea to disable all quiet tables and only enable them when they are
> ready to run. Does anyone have experience on that?
> One thing I worry about is the Balancer. I am pretty sure the balancer
> will be confused when regions come and go. And I cannot afford not to have
> it running in case of region server crashes and come back. So doesn’t
> anyone have good ideas how to handle it?
> I already doing compact myself so that is not an issue.
> Another related question, if a region is enabled but not active
> read/write, how much resources it takes in terms of region server?
> Thanks!
> Frank Luo
> Merkle was named a leader in Customer Insights Services Providers by
> Forrester Research
> <
> http://www.merkleinc.com/who-we-are-customer-relationship-marketing-agency/awards-recognition/merkle-named-leader-forrester?utm_source=emailfooter&utm_medium=email&utm_campaign=2016MonthlyEmployeeFooter
> >
> Forrester Research report names 500friends, a Merkle Company, a leader in
> customer Loyalty Solutions for Midsize Organizations<
> http://www.merkleinc.com/who-we-are-customer-relationship-marketing-agency/awards-recognition/500friends-merkle-company-named?utm_source=emailfooter&utm_medium=email&utm_campaign=2016MonthlyEmployeeFooter
> >
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