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From Devi Sunil Kumar Shegu <sunil143d...@gmail.com>
Subject Re: HBase Down Scaling
Date Fri, 10 Feb 2017 05:19:51 GMT
Hey Anthony,

AWS EMR documentation says
1) Core Nodes can be added but cannot be removed
2) Task Nodes can be added and removed

How are you able to downscale the Core Nodes?

Thanks

On Fri, Feb 10, 2017 at 10:44 AM, Anthony Nguyen <
anthony.an.nguyen@gmail.com> wrote:

> Hey Devi,
>
> I'm able to successfully scale my HBase clusters up and down (core and
> task) on EMR. Can you please provide the logs in pastebin so that we can
> help?
>
> On Feb 10, 2017 12:10 AM, "Devi Sunil Kumar Shegu" <sunil143devi@gmail.com
> >
> wrote:
>
> Hey Ted,
>
> Thanks for the reply.
>
> The problem with AWS EMR which doesn't allow downscaling of the slave(core)
> nodes.
>
>
> On Thu, Feb 9, 2017 at 7:17 PM, Ted Yu <yuzhihong@gmail.com> wrote:
>
> > Can you be specific about how the table didn't work ?
> > Were some of its regions in transition or offline ?
> >
> > Which hbase release are you using ?
> >
> > Please pastebin relevant master log / region server log.
> >
> > Thanks
> >
> > > On Feb 9, 2017, at 3:50 AM, Devi Sunil Kumar Shegu <
> > sunil143devi@gmail.com> wrote:
> > >
> > > Hi,
> > >
> > > Please look into the following issue
> > >
> > > Scenario:
> > > 1) Created an AWS EMR HBASE cluster with 1 Master node and 2
> Core(Slave)
> > > nodes
> > > 2) Created HBase table with 20 regions auto split across the 2 Core
> nodes
> > > 3) I downscaled my cluster to 1 Core node
> > > 4) The table doesn't seem to work
> > >
> > > Questions:
> > > Is it wrong to downscale HBase cluster as my table doesn't seem to be
> > > working?
> > >
> > > Thanks
> >
>

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