One workaround for no-phases is to use Erlang identity reducer which is much
quicker than js equivalent - for example
IndexQuery query=new IntValueQuery(IntIndex.named(resetIndexName),next,0);
MapReduceResult result=source.mapReduce(query)
.addReducePhase(new
NamedErlangFunction("riak_kv_mapreduce","reduce_identity"))
.timeout(240000)
.execute();
Returns bucket/key pairs.
On 19 Mar 2012, at 11:00, Russell Brown wrote:
>
> On 19 Mar 2012, at 10:34, ivenhov wrote:
>
>> Hi Russell
>>
>> Thanks for reply.
>> I tried to use your example but I could not find class BinIndexQuery in riak
>> client (I'm using 1.0.4, is there any newer version?)
> No, you are correct, I replied from memory rather than checking the API
> first, sorry.
>
>> I gave it a try with:
>>
>> IndexQuery indexQuery = new BinValueQuery(BinIndex.named(BUCKET_NAME),
>> BUCKET_NAME, bucketFilter.toString());
>> MapReduceResult res = _iclient.mapReduce(indexQuery).execute();
>> Collection<String> resS = res.getResult(String.class);
>>
>> which is probably something completely different since I got:
>> com.basho.riak.client.query.NoPhasesException
>> at com.basho.riak.client.query.MapReduce.validate(MapReduce.java:90)
>> at com.basho.riak.client.query.MapReduce.execute(MapReduce.java:74)
>
> Hmmm. I believe that validation should have been removed since Riak 1.1
> MapReduce can be executed without phases. I've raised an issue for that[1].
> Until it is fixed you can't try the example I suggested.
>
> Well you can. Just use the raw client and provide a JSON string to it
>
> String jsonString = "{\"inputs\":{\"bucket\":\"mybucket\",
> \"index\":\"myindex_bin\", \"key\":\"mykey\"}, \"query\": []}";
> rawClient.mapReduce(new MapReduceSpec(jsonString));
>
> If that is much faster then the reduce phases are to blame. Try adding back
> one, then the other. I have a suspicion that the JS reduce is the problem.
>
> Cheers
>
> Russell
>
> [1] https://github.com/basho/riak-java-client/issues/113
>
>>
>> I checked the github repository but could not find anything about
>> BinIndexQuery.
>> Daniel.
>>
>>
>> --
>> View this message in context:
>> http://riak-users.197444.n3.nabble.com/Slow-performance-on-getting-via-2i-tp3812664p3838662.html
>> Sent from the Riak Users mailing list archive at Nabble.com.
>>
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