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(function() {
"use strict";
var verifyOutput = function(out) {
printjson(out);
assert.eq(out.counts.input, 51200, "input count is wrong");
assert.eq(out.counts.emit, 51200, "emit count is wrong");
assert.gt(out.counts.reduce, 99, "reduce count is wrong");
assert.eq(out.counts.output, 512, "output count is wrong");
};
var st = new ShardingTest(
{shards: 2, verbose: 1, mongos: 1, other: {chunkSize: 1, enableBalancer: true}});
var admin = st.s0.getDB('admin');
assert.commandWorked(admin.runCommand({enablesharding: "mrShard"}));
st.ensurePrimaryShard('mrShard', st.shard1.shardName);
assert.commandWorked(admin.runCommand({shardcollection: "mrShard.srcSharded", key: {"_id": 1}}));
var db = st.s0.getDB("mrShard");
var bulk = db.srcSharded.initializeUnorderedBulkOp();
for (var j = 0; j < 100; j++) {
for (var i = 0; i < 512; i++) {
bulk.insert({j: j, i: i});
}
}
assert.commandWorked(bulk.execute());
function map() {
emit(this.i, 1);
}
function reduce(key, values) {
return Array.sum(values);
}
// sharded src sharded dst
var suffix = "InShardedOutSharded";
var out =
db.srcSharded.mapReduce(map, reduce, {out: {replace: "mrReplace" + suffix, sharded: true}});
verifyOutput(out);
out = db.srcSharded.mapReduce(map, reduce, {out: {merge: "mrMerge" + suffix, sharded: true}});
verifyOutput(out);
out = db.srcSharded.mapReduce(map, reduce, {out: {reduce: "mrReduce" + suffix, sharded: true}});
verifyOutput(out);
out = db.srcSharded.mapReduce(map, reduce, {out: {inline: 1}});
verifyOutput(out);
assert(out.results != 'undefined', "no results for inline");
out = db.srcSharded.mapReduce(
map, reduce, {out: {replace: "mrReplace" + suffix, db: "mrShardOtherDB", sharded: true}});
verifyOutput(out);
out = db.runCommand({
mapReduce: "srcSharded", // use new name mapReduce rather than mapreduce
map: map,
reduce: reduce,
out: "mrBasic" +
"srcSharded",
});
verifyOutput(out);
st.stop();
})();
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