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From Ted Yu <yuzhih...@gmail.com>
Subject Re: Some questions to get clear view
Date Mon, 24 Feb 2014 21:20:40 GMT
Upendra:
In 0.89-fb branch, the following JIRA has been integrated:

HBASE-3149 Make flush decisions per column family

FYI


On Mon, Feb 24, 2014 at 2:11 PM, Upendra Yadav <upendra1024@gmail.com>wrote:

> Thanks for your Reply...
>
> But what is the benefits of different memstore for different CF, when all
> of them are going to flush on the same time?
>
>
> On Tue, Feb 25, 2014 at 1:23 AM, Jean-Marc Spaggiari <
> jean-marc@spaggiari.org> wrote:
>
> > 1. correct.
> > 2. Regions doesn't have memstores. Regions servers have memstores. On per
> > region per CF. all the memstores for a single regions are flush at the
> same
> > time when one is full, even if the others are not.
> >
> > HTH.
> >
> > JM
> >
> >
> > 2014-02-24 14:35 GMT-05:00 Upendra Yadav <upendra1024@gmail.com>:
> >
> > > 1. One region server can have more than one region for same table
> > >
> > > 2. Which one is correct:
> > >
> > > a) Each region has one memstore( and all CF for this region will reside
> > in
> > > this single
> > > memstore) and if memstore size reached its configured limit it will
> > > snapshot and flush... due to single CF all CF have to flush.
> > >
> > > b) Each region has n no. of CF and each CF has its own memstore. And
> when
> > > one CF's memstore get full it will snapshot and flush. And will not
> force
> > > to flush other CF.
> > >
> > > I read the current document some days before and now once again i got
> > that
> > > doubts...
> > >
> >
>

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