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// Cannot implicitly shard accessed collections because the "limit" option to the "mapReduce"
// command cannot be used on a sharded collection.
// @tags: [assumes_unsharded_collection, does_not_support_stepdowns]
t = db.mr_sort;
t.drop();
t.ensureIndex({x: 1});
t.insert({x: 1});
t.insert({x: 10});
t.insert({x: 2});
t.insert({x: 9});
t.insert({x: 3});
t.insert({x: 8});
t.insert({x: 4});
t.insert({x: 7});
t.insert({x: 5});
t.insert({x: 6});
m = function() {
emit("a", this.x);
};
r = function(k, v) {
return Array.sum(v);
};
res = t.mapReduce(m, r, "mr_sort_out ");
x = res.convertToSingleObject();
res.drop();
assert.eq({"a": 55}, x, "A1");
res = t.mapReduce(m, r, {out: "mr_sort_out", query: {x: {$lt: 3}}});
x = res.convertToSingleObject();
res.drop();
assert.eq({"a": 3}, x, "A2");
res = t.mapReduce(m, r, {out: "mr_sort_out", sort: {x: 1}, limit: 2});
x = res.convertToSingleObject();
res.drop();
assert.eq({"a": 3}, x, "A3");
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