Re: Online Schema Changes

[Andrew Purtell <ap...@apache.org>]

No, it's off first in 0.94 because it was an experimental feature and now
in 0.96 because enabling it on a chaos-monkey integration test rig that is
"single-admin" in the way I think you mean results in data loss.


On Thursday, October 31, 2013, Adrien Mogenet wrote:

> Is it safe to turn it on for a "single-admin" cluster? I guess it's off to
> prevent from concurrent changes...
>
>
> On Tue, Oct 29, 2013 at 5:29 PM, Ted Yu <yuzhihong@gmail.com<javascript:;>>
> wrote:
>
> > In 0.96.0 and 0.94 the feature is disabled by default.
> >
> >   <property>
> >     <name>hbase.online.schema.update.enable</name>
> >     <value>false</value>
> >
> >
> > On Tue, Oct 29, 2013 at 9:20 AM, Chetan <chetan.kadam@gmail.com<javascript:;>>
> wrote:
> >
> > > Oops .. I mean to say, I saw some post about this feature being
> disabled
> > by
> > > default in 0.94
> > >
> > >
> > > On Tue, Oct 29, 2013 at 12:20 PM, Chetan <chetan.kadam@gmail.com<javascript:;>>
> wrote:
> > >
> > > > We are currently doing a prototype using 0.94.x.  Is this feature
> > > > supported in 0.94.x ?   I saw some post about this feature being
> > disabled
> > > > by default in 0.96
> > > >
> > > >
> > > > On Tue, Oct 29, 2013 at 12:15 PM, Ted Yu <yuzhihong@gmail.com<javascript:;>>
> wrote:
> > > >
> > > >> Are you using HBase 0.94.x or 0.96.0 ?
> > > >>
> > > >> In 0.96.0 online schema change is supported.
> > > >>
> > > >>
> > > >> On Tue, Oct 29, 2013 at 9:09 AM, Chetan <chetan.kadam@gmail.com<javascript:;>
> >
> > wrote:
> > > >>
> > > >> > Is it possible to make schema changes to HBase Table without
> having
> > to
> > > >> > explicitly disable the Table ?  ( I want to add new Column Family
> to
> > > >> > existing table).
> > > >> >
> > > >> > Thanks, Chetan
> > > >> >
> > > >>
> > > >
> > > >
> > > >
> > > > --
> > > > - Chetan
> > > > http://about.me/chetan.kadam
> > > >
> > >
> > >
> > >
> > > --
> > > - Chetan
> > > http://about.me/chetan.kadam
> > >
> >
>
>
>
> --
> Adrien Mogenet
> http://www.borntosegfault.com
>


-- 
Best regards,

   - Andy

Problems worthy of attack prove their worth by hitting back. - Piet Hein
(via Tom White)