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From Rita <rmorgan...@gmail.com>
Subject Re: migrating hbase table from one cluster to another
Date Sat, 17 Nov 2012 18:10:30 GMT
Wow. Sounds complicated.

Let me try copying the entire hbase directory over. And then restart the
cluster.

For future release of Hbase the upgrades and table compatibility should be
better supported correct?


On Sat, Nov 17, 2012 at 12:18 PM, Ted Yu <yuzhihong@gmail.com> wrote:

> Assuming the tables from 0.90.4 cluster are absent in 0.92.1 cluster, you
> can (I haven't tried this):
> 1. sideline the data you just copied from 0.90.4 cluster
> 2. create table(s) in 0.92.1 cluster with same schema as those in 0.90.4
> cluster - you need to presplit new table with the exact same region
> boundaries as the old table
> 3. move back the sidelined data into corresponding regions
>
> Thanks
>
> On Sat, Nov 17, 2012 at 8:47 AM, Ted Yu <yuzhihong@gmail.com> wrote:
>
> > So the .META. table in your 0.92.1 cluster doesn't have rows for the
> > copied tables.
> >
> > Looks like you need:
> > https://issues.apache.org/jira/browse/HBASE-3271
> > Allow .META. table to be exported
> >
> > But it is in 0.94.2 and above.
> >
> > Cheers
> >
> >
> > On Sat, Nov 17, 2012 at 8:41 AM, Rita <rmorgan466@gmail.com> wrote:
> >
> >> Do I need to restart the cluster? My 0.92.1 already has several hbase
> >> tables.
> >>
> >> On Sat, Nov 17, 2012 at 9:54 AM, <yuzhihong@gmail.com> wrote:
> >>
> >> > When you start the new cluster with 0.92.1, hbase would migrate your
> >> data
> >> > to 0.92 format.
> >> >
> >> > Thanks
> >> >
> >> >
> >> >
> >> > On Nov 17, 2012, at 6:31 AM, Rita <rmorgan466@gmail.com> wrote:
> >> >
> >> > > Hello,
> >> > >
> >> > > My old cluster is running 0.90.4 and the new cluster is running
> 0.92.1
> >> > >
> >> > > I managed to copy the data from old cluster to new cluster using
> >> > >
> >> > > hadoop distcp -i hftp://oldcluster:50070/hbase/foo.taq /tmp
> >> > >
> >> > > I even copied it to the newcluster :/hbase
> >> > >
> >> > > I am not sure what I need to do next to have hbase recognize the
> data
> >> > >
> >> > > --
> >> > > --- Get your facts first, then you can distort them as you please.--
> >> >
> >>
> >>
> >>
> >> --
> >> --- Get your facts first, then you can distort them as you please.--
> >>
> >
> >
>



-- 
--- Get your facts first, then you can distort them as you please.--

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