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From Esteban Gutierrez <este...@cloudera.com>
Subject Re: protobuf version in 0.94
Date Wed, 02 Apr 2014 06:53:21 GMT
For HBase itself is not a problem :) it compiles, but users running HBase
0.94.x in clusters pre HADOOP-9845 they will hit issues during rolling
restarts specially if the 2.4.0 jar is present. For instance, that can
break MR jobs.

esteban.




--
Cloudera, Inc.



On Tue, Apr 1, 2014 at 9:31 PM, lars hofhansl <larsh@apache.org> wrote:

> Is anybody aware of any reason why we wouldn't just update the protobuf
> version in 0.94 to 2.5.0?
>
> I know 2.5.0 is backward compatible with 2.4.0, but is the reverse true as
> well?
> I.e. if we do not change any .proto files will 2.4.0 be able to decoded
> message encoded with 2.5.0?
> If yes, we should just upgrade. If not we can't upgrade since it would
> potentially break server-server compatibility and hence rolling upgrades.
>
> -- Lars

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