Mailing-List: contact user-help@hbase.apache.org; run by ezmlm
Precedence: bulk
Reply-To: user@hbase.apache.org
Received-SPF: pass (nike.apache.org: domain of yuzhihong@gmail.com designates
 209.85.217.169 as permitted sender)
MIME-Version: 1.0
In-Reply-To: 
 <CADt=Q7=WFVYfT4+X3E45E1TGW1mCtubOO7ghMW-UZeJXT4oUAw@mail.gmail.com>
References: 
 <CAGma708S38m+DQyJgaj1nVCA+zZozNt-Uu-ftcA5gCds2tDBeg@mail.gmail.com>
	<CALte62yb58+27hzKTESB2VchJ+Bnk_xcGqBU5TAkdcwAK4dqjw@mail.gmail.com>
	<CAGma70_NbpeqyEHhtkf3+dAWe_AvOPRwvkp4UAqMHHw7k1XUnw@mail.gmail.com>
	<CAGma70-69XDqz3zacmNxL6yyUHZ3QeJj6Ky8D=a-wpz12FfCiA@mail.gmail.com>
	<CALte62zSWoejizW23UAWfs-K2FAi+Eq+xvGc=o4EeYDkpGsCww@mail.gmail.com>
	<CADt=Q7=WFVYfT4+X3E45E1TGW1mCtubOO7ghMW-UZeJXT4oUAw@mail.gmail.com>
Date: Thu, 31 Oct 2013 09:57:32 -0700
Message-ID: 
 <CALte62x-epyy4k6r+pQ-thYGE1gJZ-=6OGwokmWvj-ZO2ynizw@mail.gmail.com>
Subject: Re: Online Schema Changes
From: Ted Yu <yuzhihong@gmail.com>
To: "user@hbase.apache.org" <user@hbase.apache.org>
Content-Type: multipart/alternative; boundary=089e013d14b28881e904ea0c5898

--089e013d14b28881e904ea0c5898
Content-Type: text/plain; charset=ISO-8859-1

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 <adrien.mogenet@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 <yuzhihong@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 <chetan.kadam@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 <chetan.kadam@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 <yuzhihong@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 <chetan.kadam@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
>

--089e013d14b28881e904ea0c5898--