Hi Derek,
The Riak Erlang client (https://github.com/basho/riak-erlang-client) has good
support for mapreduce, so it may be worthwhile switching to this.
Here is an example of how to count records returned by a 2i lookup using a map
reduce query:
riakc_pb_socket:mapred(Pid, {index, <<"bucket">>, <<"index_int">>, <<"1">>,
<<"50">>},
[{reduce, {modfun, 'riak_kv_mapreduce',
'reduce_count_inputs'}, none, true}]).
Hope this helps.
Best regards,
Christian
--------------------
Christian Dahlqvist
Client Services Engineer
Basho Technologies
EMEA Office
E-mail: [email protected]
Skype: c.dahlqvist
Mobile: +44 7890 590 910
On 18 Jan 2013, at 09:48, Evan Vigil-McClanahan <[email protected]> wrote:
> Note that this uses the luke mapreduce subsystem, which isn't a good
> idea as it's been deprecated going forward.
>
> Unfortunately there doesn't seem to be a way that's as simple to do
> pipe mapreduce jobs. I'll ping people and see if we can't get you all
> some code that's slightly easier to use.
>
> On Fri, Jan 18, 2013 at 5:09 AM, Derek Sanderson <[email protected]> wrote:
>> I love this mailing list
>>
>> Thank you Daniil! I had almost exactly the first thing you recommended, but
>> the example I found had a slightly different notation, and was throwing
>> errors that I couldn't figure out.
>>
>> Your example seems to be working, and I think I can get past my issue
>>
>> Thanks again
>>
>>
>> On Thu, Jan 17, 2013 at 10:30 PM, Daniil Churikov <[email protected]> wrote:
>>>
>>> Another option, if you want range query:
>>>
>>> {ok, C} = riak:local_client(),
>>> {ok, Keys} = C:get_index(<<"bucket_name">>, {range,
>>> <<"key_name_bin">>,
>>> KeyStart, KeyTo}),
>>> ...
>>>
>>>
>>>
>>> --
>>> View this message in context:
>>> http://riak-users.197444.n3.nabble.com/Using-the-Local-Client-from-a-riak-attach-session-tp4026572p4026578.html
>>> Sent from the Riak Users mailing list archive at Nabble.com.
>>>
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>>
>>
>>
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