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Date: Tue, 25 Aug 2015 13:37:49 -0400
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Subject: Re: Using HBase with a shared filesystem (gluster, nfs, s3, etc)
From: donmai <doodnet@gmail.com>
To: user <user@hbase.apache.org>
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NFS
0.98.10
Will get to you as soon as I am able, on travel

Is my general understanding correct, though, that there shouldn't be any
data movement from a region reassignment?

On Tue, Aug 25, 2015 at 12:40 PM, Ted Yu <yuzhihong@gmail.com> wrote:

> Can you give a bit more information:
>
> which filesystem you use
> which hbase release you use
> master log snippet for the long region assignment
>
> Thanks
>
> On Tue, Aug 25, 2015 at 9:30 AM, donmai <doodnet@gmail.com> wrote:
>
> > Hi,
> >
> > I'm curious about how exactly region movement works with regard to data
> > transfer. To my understanding from the docs given an HDFS-backed
> cluster, a
> > region movement / transition involves changing things in meta only, all
> > data movement for locality is handled by HDFS. In the case where rootdir
> is
> > a shared file system, there shouldn't be any data movement with a region
> > reassignment, correct? I'm running into performance issues where region
> > assignment takes a very long time and I'm trying to figure out why.
> >
> > Thanks!
> >
>

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