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From Ryan King <>
Subject Re: Avro RPC?
Date Tue, 28 Dec 2010 20:10:22 GMT
On Tue, Dec 28, 2010 at 9:42 AM, Edward Capriolo <> wrote:
> On Tue, Dec 28, 2010 at 11:30 AM, Eric Evans <> wrote:
>> On Wed, 2010-12-22 at 11:00 -0600, Eric Evans wrote:
>>> So, Avro RPC.  Is anyone using this?  Is there anyone interested in
>>> seeing it maintained?
>>> I'm concentrating on CQL[1][2], which for me will culminate in the
>>> creation of a new, application-specific transport, one that doesn't
>>> use either of the frameworks.  To me, the existing RPC framework is
>>> just something to piggy-back on until things are otherwise working,
>>> and I'm starting to think Thrift might be a better piggy here (read:
>>> it has more momentum).
>> There hasn't been very many people sounding off on this, but those that
>> have seem to be OK with calling it quits on the Avro interface.  Since I
>> brought this up during the holiday season, I'll give it another week
>> just in case someone who really cares has been offline.
>> To be clear though, I'm not really interested in pushing this forward
>> anymore, so it's not enough to simply want it, we need someone(s)
>> willing to step up.
>> --
>> Eric Evans
> @Eric I agree with many of your sentiments.
> The "avro summary" was/is somewhere between wishful thinking and
> educated guesswork. In ~ May 2010 a shiny new Avro project went top
> level apache status. Meanwhile thrift had no full time committers and
> had some glaring bugs that had been open in thrift 0.4.0 (some around
> php) that annoyed everyone.
> However thrift did have a release 0.5.0. There are some projects that
> use thrift, Hbase, Cassandra, and Hive. Thrift still delivers on
> bindings for a number of languages.
> Avro is in catchup mode to thrift. They are still evolving the
> project, while still trying to add support for more languages. As far
> as I can tell there is no flagship project build around Avro
> end-to-end.
> It would be a shame to see the Avro support go away from Cassandra
> because of all the hard work that was put into it. However the
> maintenance cost might outweigh it's benefits.

Agreed. Thrift's progress has improved a lot since we first talked
about using Avro RPC. In the meantime Avro RPC progress has slowed
(the focus is on the Avro storage implementations).

I think it'd be fair to give up on Avro RPC for client rpc for now*.
It doesn't deliver enough over Thrift anymore.


* I'm still a fan of using avro for data storage and anywhere else we
currently do custom serialization

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