hbase-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Ted Yu <yuzhih...@gmail.com>
Subject Re: Hbase replication
Date Tue, 05 Jul 2016 17:44:23 GMT
darshit:
Can you outline what changes were made during alter table operation ?

Thanks

On Tue, Jul 5, 2016 at 10:28 AM, darshit kandpal <dkandpal7@gmail.com>
wrote:

> Hello James,
> Thanks for the update. There was another issue:
> Once the table has been created and replication has been enabled, if I do
> alter table in master cluster it should be replicated at the slave since
> the column family and table structure remains same at base level. However
> the phoenix table structure remains the same in the slave cluster. Is there
> a way to enable this automatically?
>
> Thanks,
> Darshit
>
> On Sun, Jun 26, 2016 at 3:19 AM, James Taylor <jamestaylor@apache.org>
> wrote:
>
> > Hi Darshit,
> > The way I've seen this dealt with in the past is really more through
> > process: have a upgrade schema client that's responsible for running DDL
> > both on the primary and secondary cluster (and disable replication while
> > these commands are running to prevent any race conditions). More details
> > here [1].
> > Thanks,
> > James
> >
> > [1]
> >
> http://mail-archives.apache.org/mod_mbox/phoenix-user/201606.mbox/%3CCAAF1JdggbF5YSCjHAnrjqTZU04dxLdNkCLvh-tpdeok0j853Gg%40mail.gmail.com%3E
> >
> >
> > On Sun, Jun 26, 2016 at 12:14 AM, darshit kandpal <dkandpal7@gmail.com>
> > wrote:
> >
> >> Hello folks,
> >>
> >> I was struggling with the problem of automatically syncing up the table
> >> schema of the phoenix tables as soon as any change is made or a new
> table
> >> is created because hbase replication works only if the two clusters have
> >> same tables.
> >>
> >>
> >> Is there a trap based method for this which triggers the same table to
> be
> >> created in the other cluster as soon as it is created in the master
> cluster.
> >>
> >> Also when the waledits are shipped only the puts and deletes are
> >> replayed. Shouldnt replaying the creates and alters solve this problem
> >> permanently? If not i wanted to understand why not?
> >>
> >> Thanks for your time
> >>
> >> Darshit
> >>
> >>
> >
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message