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// Cannot implicitly shard accessed collections because of extra shard key index in sharded
// collection.
// @tags: [assumes_no_implicit_index_creation]
t = db.index_arr1;
t.drop();
t.insert({_id: 1, a: 5, b: [{x: 1}]});
t.insert({_id: 2, a: 5, b: []});
t.insert({_id: 3, a: 5});
assert.eq(3, t.find({a: 5}).itcount(), "A1");
t.createIndex({a: 1, "b.x": 1});
assert.eq(3, t.find({a: 5}).itcount(), "A2"); // SERVER-1082
assert.eq(2, t.getIndexes().length, "B1");
t.insert({_id: 4, a: 5, b: []});
t.createIndex({a: 1, "b.a": 1, "b.c": 1});
assert.eq(3, t.getIndexes().length, "B2");
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