// @tags: [requires_non_retryable_writes] t = db.update_arraymatch3; t.drop(); o = { _id: 1, title: "ABC", comments: [{"by": "joe", "votes": 3}, {"by": "jane", "votes": 7}] }; t.save(o); assert.eq(o, t.findOne(), "A1"); t.update({'comments.by': 'joe'}, {$inc: {'comments.$.votes': 1}}, false, true); o.comments[0].votes++; assert.eq(o, t.findOne(), "A2");