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Posted to user@hbase.apache.org by Chetan <ch...@gmail.com> on 2013/10/29 17:09:49 UTC
Online Schema Changes
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
Re: Online Schema Changes
Posted by 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)
Re: Online Schema Changes
Posted by Ted Yu <yu...@gmail.com>.
See this comment:
https://issues.apache.org/jira/browse/HBASE-9792?focusedCommentId=13803252&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13803252
which refers to HBASE-9818.
Cheers
On Thu, Oct 31, 2013 at 3:14 AM, Adrien Mogenet <ad...@gmail.com>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 <yu...@gmail.com> 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 <ch...@gmail.com> 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 <ch...@gmail.com>
> 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 <yu...@gmail.com>
> 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 <ch...@gmail.com>
> > 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
>
Re: Online Schema Changes
Posted by Adrien Mogenet <ad...@gmail.com>.
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 <yu...@gmail.com> 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 <ch...@gmail.com> 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 <ch...@gmail.com> 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 <yu...@gmail.com> 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 <ch...@gmail.com>
> 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
Re: Online Schema Changes
Posted by Ted Yu <yu...@gmail.com>.
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 <ch...@gmail.com> 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 <ch...@gmail.com> 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 <yu...@gmail.com> 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 <ch...@gmail.com> 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
>
Re: Online Schema Changes
Posted by Chetan <ch...@gmail.com>.
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 <ch...@gmail.com> 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 <yu...@gmail.com> 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 <ch...@gmail.com> 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
Re: Online Schema Changes
Posted by Chetan <ch...@gmail.com>.
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 <yu...@gmail.com> 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 <ch...@gmail.com> 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
Re: Online Schema Changes
Posted by Ted Yu <yu...@gmail.com>.
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 <ch...@gmail.com> 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
>