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From Patrick Hunt <ph...@apache.org>
Subject Re: Thrift interface
Date Wed, 16 Jul 2008 16:38:14 GMT
FUSE support is tracked by the following JIRA
a patch is attached to the JIRA containing the feature. It's a big(ger) 
set of code so I've given it time for review. Should be committed soon 
and will be part of 3.0.

I started working on script support just before we got accepted to 
Apache, which put that onto the back burner for a bit. We have a design 
and I implemented a very basic prototype using SWIG that supports 
perl/python/ruby/php/tcl. I'll be picking scripting support up again 
once the Apache migration is mostly complete.


Benjamin Reed wrote:
> Hi Chris,
> We have talked about using Thrift for our serialization layer (I thought
> we had a Jira opened for it, but I cannot find it). Thrift RPC is a
> different story. You would lose watch callbacks. I think it would also
> be hard to support sessions and thus ephemeral nodes. Finally, your
> client and server throughput would be quite low since clients wouldn't
> be able to pipeline requests (it appears you can only have one request
> outstanding at a time) and servers have to dedicate a thread to service
> a request.
> ZooKeeper clients are more than simple RPC dispatchers they also do
> session maintenance and completion processing, so you need something a
> bit more sophisticated at the client.
> I assume you want this to get bindings for other languages. We have SWIG
> and FUSE bindings for this.
> If you really want thrift, I think there is a combo solution: implement
> a standalone service, thrift server and zk client, and run it on each
> ZooKeeper server.
> ben
> Chris Smith wrote:
>> Hi,
>> I'm currently thinking about implementing a Thrift interface for
>> ZooKeeper, and wanted to get some opinions on it before I start. I can
>> basically see two possible ways to implement it:
>>  * A standalone service which implements both a ZooKeeper client and a
>> Thrift server, and basically acts as a proxy between the two
>>  * Integrate the Thrift server with the ZooKeeper server, so that ZK
>> servers themselves handle the Thrift connections
>> I think the former is probably nicer from a development stand-point,
>> but the latter seems better from an end-user stand-point. Has anyone
>> else thought about doing this (or actually done it!), and does anyone
>> have any preferences/comments with regard to the above options?
>> Cheers,
>> Chris Smith

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