On 25 Oct 2011, at 16:09, Alexander Robbins wrote:

> The M/R job over the http api seems to be working to me.
> 
> curl -X POST http://192.168.1.39:8098/mapred -H "Content-Type: 
> application/json" -d @query.json
> 
> query.json:
> {"inputs":{"bucket":"mentions","index":"docUID_bin","key":"5b9d1a6250dbd3e77ff004a12d06958745ee32844ad4aa668001bbe69b5efcf8"},"query":[{"reduce":{"language":"erlang","module":"riak_kv_mapreduce","function":"reduce_identity","arg":"{reduce_phase_only_1,
>  true}"}}]}
> 
> Results:
> [["mentions","1907d031c88b8df2fc5128114615133d4184cedaea55964c3cee0ef9fe566f13"],["mentions","1bb5ce4aba0bf240698876530948c807d50e6f04a7358b7514c756dd295775ae"],["mentions","1f5f8f78951c6842ad6bcc96e3839ca8240b71372d2ab4826411fdfc84fedeb1"],["mentions","330856dabfa3a1c5b9ca8051686d8d7f387a23c795493a4e8f33d84861756d4f"],["mentions","338fffb9740b2f0c50b2da52a73b4861be318868082db3748eb95a47654981bd"],["mentions","5eef2b9cd6f7faf34548c9700069527287574690ab3dabf4c4f186753ffc5417"],["mentions","7ec9217a7a87c9e43a94170bb1ab8c13566233823ef6f77ef9c455a289c4bdf8"],["mentions","a588d7f0fb413d52a895a5d7e7fcfc966e9a56c42456e7821d2e5fa93b5671ba"],["mentions","aaacde92acf2c61abf9a4104f263283aed6233da08efb6ebbf13f83dfcfa1e7c"]]
> 
> Looks good to me. It has an extra "mentions" term, but I think the java 
> client explicitly drops that when converting the m/r results.

That is what I think the culprit is (dropping the bucket from the return.) 
Thanks for helping track it down. I'm going to spend some time trying to 
recreate it so I can fix it. I've opened a bugzilla ticket for it here 
https://issues.basho.com/show_bug.cgi?id=1262

Thanks again, hope to have something for you soon. In the meantime, a work 
around would be to use an M/R job from the PB client like this (it is a bit  
more verbose, sorry)

        // get your PB client as before
        IndexQuery q = new BinValueQuery(BinIndex.named("docUID"), "mentions", 
"5b9d1a6250dbd3e77ff004a12d06958745ee32844ad4aa668001bbe69b5efcf8");
        MapReduceResult result = 
client.mapReduce(q).addReducePhase(NamedErlangFunction.REDUCE_IDENTITY, 
"{reduce_phase_only_1, true}").execute();
        Collection<String[]> r = result.getResult(String[].class);

This will get you a collection of two tuples where the first element is the 
bucket and the second the key.

Let me know if that works for you in the interim.

Cheers

Russell


> 
> Alex
> 
> On Tue, Oct 25, 2011 at 9:12 AM, Russell Brown <russel...@basho.com> wrote:
> 
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