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From Ian Varley <ivar...@salesforce.com>
Subject Re: Is htable.delete(List<Delete>) transactional?
Date Mon, 16 Apr 2012 23:41:52 GMT
More complex answer: generally, nothing that involves more than a single row in HBase is transactional.
:)

It's possible that HBase might get some limited form of multi-row transactions in the future
(see HBase-5229<https://issues.apache.org/jira/browse/HBASE-5229> for more on that)
but even then, things would only be transactional within a single region server, which means
it's not really a general solution for the case you mention below (short of some external
guarantee that all of your deletes are on the same RS).

That said: mutations are generally idempotent in HBase (except for increments). So if you
get an exception, it's usually OK to just retry the whole thing.

Ian

On Apr 16, 2012, at 6:33 PM, Jean-Daniel Cryans wrote:

Simple answer: it's not transactional.

J-D

On Mon, Apr 16, 2012 at 4:28 PM, Haijia Zhou <leonster@gmail.com<mailto:leonster@gmail.com>>
wrote:
Very simple question as the subject shows:
Is htable.delete(List<Delete>) transactional?
Say if I am to delete 1000 rows and in the middle of deletion some error
occurs, then will the whole deletion operation get rolled back or will it
end up with  partial deletion?

Thanks


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