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Date: Tue, 4 Mar 2008 15:04:54 +0900
From: "edward yoon" <edward@udanax.org>
To: hbase-dev@hadoop.apache.org
Subject: Re: Renaming the table.
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Is there a renaming tool of columnfamily(-ies) ?

On 3/4/08, edward yoon <edward@udanax.org> wrote:
> >> I would expect you to add a renameTable method to HBaseAdmin and
> create a RenameTable subclass of TableOperation in the master.
>
> Yes. good.
>
> On 3/4/08, Bryan Duxbury <bryan@rapleaf.com> wrote:
> > Yes, it's good functionality. Just making sure you understand all the
> > pieces you'll need.
> >
> > I would expect you to add a renameTable method to HBaseAdmin and
> > create a RenameTable subclass of TableOperation in the master.
> >
> > -Bryan
> >
> > On Mar 3, 2008, at 7:10 PM, edward yoon wrote:
> >
> > > Anyway guys, Is addition of table rename function ok?
> > >
> > > On 3/4/08, Jim Kellerman <jim@powerset.com> wrote:
> > >> +1 Bryan. In the future, we need to be able to recover HBase
> > >> entirely from the file system
> > >> without either the META or ROOT region's help since they may be
> > >> corrupted.
> > >>
> > >> ---
> > >> Jim Kellerman, Senior Engineer; Powerset
> > >>
> > >>
> > >>> -----Original Message-----
> > >>> From: Bryan Duxbury [mailto:bryan@rapleaf.com]
> > >>> Sent: Monday, March 03, 2008 4:22 PM
> > >>> To: hbase-dev@hadoop.apache.org
> > >>> Subject: Re: Renaming the table.
> > >>>
> > >>> I'm not sure I understand. Do you mean you'd maintain a
> > >>> mapping between the old, actual table name and the new,
> > >>> logical table name? I don't really like that idea. It sounds
> > >>> like it would add a ton of failure cases and complexity to
> > >>> the system. We need tables to stay in a really consistent
> > >>> state so that we can have as much data reliability as possible.
> > >>>
> > >>> -Bryan
> > >>>
> > >>> On Mar 3, 2008, at 3:58 PM, edward yoon wrote:
> > >>>
> > >>>>> We'd need to add a new table operation for renaming a table
> > >>>>> internally. The ugly part is that we'd have to rewrite
> > >>> every row for
> > >>>>> the table in META to do this.
> > >>>>
> > >>>> In fact, i thought a physical/logical table name management for
> > >>>> high-performance without no changing the meta data.
> > >>>>
> > >>>> On 3/4/08, Bryan Duxbury <bryan@rapleaf.com> wrote:
> > >>>>> We'd need to add a new table operation for renaming a table
> > >>>>> internally. The ugly part is that we'd have to rewrite
> > >>> every row for
> > >>>>> the table in META to do this.
> > >>>>>
> > >>>>>  The SQL way to do this would be "ALTER TABLE table RENAME
> > >>> new name".
> > >>>>>  However, that's a bit verbose, so I think "RENAME table TO
> > >>>>> new_table"
> > >>>>>  would be fine.
> > >>>>>
> > >>>>>
> > >>>>>  -Bryan
> > >>>>>
> > >>>>>
> > >>>>>  On Mar 2, 2008, at 9:56 PM, edward yoon wrote:
> > >>>>>
> > >>>>>> A renaming function of table alteration is needed.
> > >>>>>> Is there a tool for renaming the table?
> > >>>>>>
> > >>>>>> Any ideas please post back.
> > >>>>>> Also, i'd like to add renaming syntax to hql as describe below.
> > >>>>>>
> > >>>>>> hql > RENAMING table_name TO new_table_name;
> > >>>>>>
> > >>>>>> What do you think?
> > >>>>>> --
> > >>>>>> B. Regards,
> > >>>>>> Edward yoon @ NHN, corp.
> > >>>>>
> > >>>>>
> > >>>>
> > >>>>
> > >>>> --
> > >>>> B. Regards,
> > >>>> Edward yoon @ NHN, corp.
> > >>>
> > >>>
> > >>> No virus found in this incoming message.
> > >>> Checked by AVG Free Edition.
> > >>> Version: 7.5.516 / Virus Database: 269.21.3/1308 - Release
> > >>> Date: 3/3/2008 10:01 AM
> > >>>
> > >>>
> > >>
> > >> No virus found in this outgoing message.
> > >> Checked by AVG Free Edition.
> > >> Version: 7.5.516 / Virus Database: 269.21.3/1308 - Release Date:
> > >> 3/3/2008 10:01 AM
> > >>
> > >>
> > >
> > >
> > > --
> > > B. Regards,
> > > Edward yoon @ NHN, corp.
> >
> >
>
>
> --
> B. Regards,
> Edward yoon @ NHN, corp.
>


-- 
B. Regards,
Edward yoon @ NHN, corp.