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/**
* Test that applyOps ignores updates intended for array elements or subdocument fields, if the
* target document lacks the expected array/subdocument. This can arise when re-applying past
* operations that happened before the array/subdoc field was removed. The applyOps command must be
* able to continue past these errors for the sake of idempotency.
*
* Additionally, if an update to one field fails, updates to other fields in the same applyOps
* operation should succeed.
*
* The original motivation for this test is MongoMirror.
*
* @tags: [
* requires_non_retryable_commands,
*
* # applyOps uses the oplog which requires replication support.
* requires_replication,
* ]
*/
(function() {
"use strict";
const coll = db.getCollection(jsTestName());
coll.drop();
// Run applyOps as MongoMirror does, with a dummy command to make it non-atomic. MongoMirror does
// not use allowAtomic: false.
function applyOps(ops) {
ops.push({op: "c", ns: "admin.$cmd", o: {applyOps: [{op: "n", ns: "", o: {"msg": "noop"}}]}});
let command = {applyOps: ops, writeConcern: {w: "majority"}};
assert.commandWorked(db.adminCommand(command));
}
const originalDoc = {
_id: 1,
a: null
};
coll.insert(originalDoc);
// Update field "a", which is null, but apply an operation intended for an array.
applyOps([{ns: coll.getFullName(), op: "u", o2: {_id: 1}, o: {$set: {'a.0': 2}}}]);
assert.eq(originalDoc, coll.findOne());
// Same, but also set a new field 'b' to 1.
applyOps([{ns: coll.getFullName(), op: "u", o2: {_id: 1}, o: {$set: {'a.0': 2, b: 1}}}]);
assert.eq({_id: 1, a: null, b: 1}, coll.findOne());
// An operation intended for a subdocument.
applyOps([{ns: coll.getFullName(), op: "u", o2: {_id: 1}, o: {$set: {'a.field': 2}}}]);
assert.eq({_id: 1, a: null, b: 1}, coll.findOne());
// Same, but set 'b' to 2.
applyOps([{ns: coll.getFullName(), op: "u", o2: {_id: 1}, o: {$set: {'a.field': 2, b: 2}}}]);
assert.eq({_id: 1, a: null, b: 2}, coll.findOne());
}());
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