Hi, Thanks for reply. Frankly, I don't understand the example well. Maybe you have reference to some tutorial (for newbies [?])?
Thanks,
Pavel
On Sun, Sep 23, 2012 at 11:51 AM, Rapsey <rap...@gmail.com> wrote:
> Map reduce starts out as a multiget. If your reduce function is a union of
> all data and map is an identity you just have a multiget.
> What I use:
> B - bucket,
> LI - list of keys
> mget_bin(P,B,LI) ->
> case riakc_pb_socket:mapred(P,[{B,key(Key)} || Key <- LI],
> [{reduce, {modfun, riak_kv_mapreduce, reduce_set_union}, none, false},
> {map, {modfun, riak_kv_mapreduce, map_identity}, none, true}]) of
> {ok,[{_,L}|_]} ->
> {ok,[Val ||
> {r_object,_Bucket,_Key,[{r_content,_Meta,Val}],_VClock,_UpdateMeta,_UpdateVal}
> <- L]};
> {error,notfound} ->
> undefined;
> X ->
> X
> end.
>
>
> Sergej
>
> On Sun, Sep 23, 2012 at 9:44 AM, Pavel Kogan <pavel.ko...@cortica.com>wrote:
>
>> Hi all,
>>
>> Is there any multiget functionality in Riak (like in memcached)?
>>
>> Best Regards,
>> Pavel
>>
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>> riak-users@lists.basho.com
>> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
>>
>>
>
<<330.png>>
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