mapreduce javascript function error - riak

Question

I was unable to get the erlang function running so trying with Javascript as below :
curl -XPOST http://localhost:8098/mapred \
-H "Content-Type: application/json" \
-d #- \
<<EOF
{
"inputs":"logs",
"query":[{
"map":{
"language":"javascript",
"source":"function(riakObject, keydata, arg) {
var m = riakObject.values[0].data.match(/^INFO.*cart/);
return [(m ? m.length : 0 )];
}"
},
"reduce":{
"language":"javascript",
"source":"function(values, arg){
return [values.reduce(
function(total, v){ return total + v; }, 0)
];
}"
}
}]
}
EOF
seems not working with JS as well. Shell just hangs and does not return at all. Please suggest.
** UPDATE **
Today when i tried i see the following error :
An error occurred parsing the "query" field.
["Unrecognized format of query phase:\n ",
[123,
[34,<<"map">>,34],
58,
[123,
[34,<<"language">>,34],
58,
[34,<<"javascript">>,34],
44,
[34,<<"source">>,34],
58,
[34,
<<"function(riakObject, keydata, arg) { var m = riakObject.values[0].data.match(/^INFO.*Milk/); return [(m ? m.length : 0 )]; }">>,
34],
125],
44,
[34,<<"reduce">>,34],
58,
[123,
[34,<<"language">>,34],
58,
[34,<<"javascript">>,34],
44,
[34,<<"source">>,34],
58,
[34,
<<"function(values, arg){ return [values.reduce( function(total, v){ return total + v; }, 0) ]; }">>,
34],
125],
125],
"\n\nValid formats are:\n {\"map\":{...spec...}}\n {\"reduce\":{...spec...}}\n {\"link:{...spec}}\n"]

Answer 1

The query element should be a list of objects, with "map" and "reduce" being in discreet objects. Your JSON has them as properties of the same object.
This worked for me:
curl -XPOST http://localhost:8098/mapred -H "Content-Type: application/json" -d '{
"inputs":"logs",
"query":[
{"map":{
"language":"javascript",
"source":"function(riakObject, keydata, arg) {
var m = riakObject.values[0].data.match(/^INFO.*cart/);
return [(m ? m.length : 0 )];
}"
}},
{"reduce":{
"language":"javascript",
"source":"function(values, arg){
return [values.reduce(
function(total, v){ return total + v; }, 0)
];
}"
}}
]
}'