`document_missing_exception` on Upsert?

[skilledDeveloper]

I use bulk update and have set "doc_as_upsert": true
However, SOMETIMES I get errors like this:

"update": {
  "_index": "artists",
  "_type": "artist",
  "_id": "fernanda-francis",
  "status": 404,
  "error": {
  "type": "document_missing_exception",
  "reason": "[artist][fernanda-francis]: document missing",
  "index_uuid": "q123-ftoS4WD3eE1j0D0ka",
  "shard": "3",
  "index": "artists"
  }
}

Any ideas why this happens? Isn't it supposed to insert the doc if it doesn't exist?

ES v5.1 on AWS.

[skilledDeveloper]

Anyone has any ideas?
Is this just me who has run into this issue?

[mujtabahussain]

Hey @skilledDeveloper,

Any chance you could show us the upsert code?

[skilledDeveloper]

@mujtabahussain
I use elasticsearch npm package and send something like the followings via bulk method:

  var artist = {...};
  var firstLine = {
    update: {
      _index: "artists",
      _type: "artist",
      _id: artist.id,
    }
  };
  var secondLine = {
    "doc": artist
    "doc_as_upsert": true
  };

  client.bulk({
    body: [firstLine, secondLine]
  }, function (err, resp) {
    // ...
  });

[skilledDeveloper]

Any ideas?