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HBase >> mail # user >> migrating hbase table from one cluster to another


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Rita 2012-11-17, 14:31
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yuzhihong@... 2012-11-17, 14:54
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Rita 2012-11-17, 16:41
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Ted Yu 2012-11-17, 16:47
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Re: migrating hbase table from one cluster to another
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 <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]> 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, <[EMAIL PROTECTED]> 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 <[EMAIL PROTECTED]> 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.--
>>
>
>
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Rita 2012-11-17, 18:10
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Ted Yu 2012-11-17, 21:29