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From Chris K Wensel <ch...@wensel.net>
Subject Re: Backup Again
Date Wed, 04 Feb 2009 16:42:01 GMT
Currently no. but we would love you to patch that in. If you clone the  
repo and get it working, I'll merge it back from your repo.

I'm thinking it is as simple as handing the URL to HBaseTap. thoughts?

ckw

On Feb 4, 2009, at 8:38 AM, Michael Dagaev wrote:

> Thanks, Chris
>
> BTW, is it possible to run a few HBase clients in a single JVM?
>
> On Wed, Feb 4, 2009 at 6:28 PM, Chris K Wensel <chris@wensel.net>  
> wrote:
>> Hey Michael
>>
>> You could probably use Cascading to migrate data between HBase  
>> clusters.
>> http://wiki.apache.org/hadoop/Hbase/Cascading
>>
>> But the code currently doesn't support multiple HBase cluster  
>> clients in a
>> single JVM, but I'm sure it can be coded in quickly. (the code is  
>> hosted at
>> github, so is easily cloned and patched).
>>
>> A benefit of using Cascading would be the ability to put in quality  
>> checks,
>> or filter data very easily.
>>
>> I've already heard of users starting to migrate from HBase to a  
>> RDBMS using
>> Cascading, and also between Hypertable and Aster Data. Hopefully  
>> those
>> adapters will leak out for the rest of us to use.
>>
>> ckw
>>
>> On Feb 4, 2009, at 8:21 AM, Michael Dagaev wrote:
>>
>>> Hi, all
>>>
>>>  I read HBASE-974 and HBASE-643 mentioned on the list
>>> but what do you think about copying tables from the production
>>> to a backup Hbase cluster ? I guess we do need a big iron
>>> for such a backup cluster.
>>>
>>> I understand that the copy can be implemented with MR
>>> but for now we can implement it just as a simple sequential script,
>>> which scans the tables of the production Hbase and writes the data
>>> to the backup Hbase.
>>>
>>> Does it make sense?
>>>
>>> Thank you for your cooperation,
>>> M.
>>
>> --
>> Chris K Wensel
>> chris@wensel.net
>> http://www.cascading.org/
>> http://www.scaleunlimited.com/
>>
>>

--
Chris K Wensel
chris@wensel.net
http://www.cascading.org/
http://www.scaleunlimited.com/


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