Forming inputs to MR job

Alex Moore amoore at basho.com
Wed Dec 30 15:31:39 EST 2015


Hi Timur,

For your inputs line, try:

"inputs":["mybucket_type", "mybucket"]

Thanks,
Alex

On Wed, Dec 30, 2015 at 3:01 PM Timur Fayruzov <timur.fairuzov at gmail.com>
wrote:

> Hello,
>
> I'm trying to write a simple MR job using Javascript and hit a wall right
> at start. I can't figure out how to specify "inputs". Here's the code:
> curl -XPOST "my_riak_server:8098/mapred" -H "Content-Type:
> application/json" -d @- <<EOF
> {
>   "input": "my_bucket"
>   "query":[{
>     "map":{
>         "language":"javascript",
>         "source":"function(riakObject, keydata, arg) {
>             var m = riakObject.values[0].data;
>             return [m];
>         }"
>     }
>   }]
> }
> EOF
>
> this returns empty array.
>
> Aside: I know that listing all keys is slow but for now I can live with
> this.
>
> Note, that I'm using non-default bucket type, so the actual location of my
> keys is my_riak_server/types/my_bucket_type/buckets/my_bucket/my_key, but I
> can't figure out how to communicate this location properly in the "input"
> field. I have found this "documentation":
> https://github.com/basho/riak_kv/blob/2.1/src/riak_kv_mapred_json.erl#L101,
> but it does not explain how to specify bucket type and I'm not proficient
> enough in Erlang to follow the code easily. I did not find any other
> documentation on this field.
>
> Following returns all keys successfully, so data is there:
> curl '
> http://my_riak_cluster:8098/types/my_bucket_type/buckets/my_bucket/keys?keys=true
> '
>
> Any pointers are highly appreciated.
>
> Thanks,
> Timur
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