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Type:
Bug
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Resolution: Works as Designed
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Priority:
Major - P3
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None
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Affects Version/s: 2.2.30
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Component/s: MongoDB 3.2, MongoDB 3.4
Collection.insertMany returns one type of result when all inserts are correct:
INSERT RESULT {
result: { ok: 1, n: 2 },
ops: [ { _id: 1 }, { _id: 2 } ],
insertedCount: 2,
insertedIds: [ 1, 2 ]
}
When some of the operations fail, a BulkWriteResult is returned:
INSERT RESULT BulkWriteResult {
ok: [Getter],
nInserted: [Getter],
nUpserted: [Getter],
nMatched: [Getter],
nModified: [Getter],
nRemoved: [Getter],
getInsertedIds: [Function],
getUpsertedIds: [Function],
getUpsertedIdAt: [Function],
getRawResponse: [Function],
hasWriteErrors: [Function],
getWriteErrorCount: [Function],
getWriteErrorAt: [Function],
getWriteErrors: [Function],
getLastOp: [Function],
getWriteConcernError: [Function],
toJSON: [Function],
toString: [Function],
isOk: [Function]
}
The code to show the bug is this, just run it twice:
const { MongoClient } = require('mongodb'); MongoClient.connect('mongodb://localhost:27017/test', (err, db) => { if (err) { return console.log('MONGO CONNECTION ERR'); } db.collection('users').insertMany([{_id: 1}, {_id: 2}], (err, result) => { if (err) { console.log('WRONG INSERT', err); } console.log('INSERT RESULT', result); }); });