t = db.parallel_collection_scan;
t.drop();

s = "";
while (s.length < 10000)
    s += ".";

var bulk = t.initializeUnorderedBulkOp();
for (i = 0; i < 8000; i++) {
    bulk.insert({x: i, s: s});
}
assert.writeOK(bulk.execute());

function iterateSliced() {
    var res = t.runCommand("parallelCollectionScan", {numCursors: 3});
    assert(res.ok, tojson(res));
    var count = 0;
    for (var i = 0; i < res.cursors.length; i++) {
        var x = res.cursors[i];
        var cursor = new DBCommandCursor(db, x, 5);
        count += cursor.itcount();
    }

    return count;
}

assert.eq(iterateSliced(), t.count());
assert.eq(iterateSliced(), i);