Finding multiple Elasticsearch documents with same ids, different types - elasticsearch

Question

I need to find out if any document with a certain id was already indexed in my ES database, so that I can delete them before indexing a new document.
The trouble is I do not know a priori the type it was indexed as.
I found the _mget query which sounds like it could be what I need, but then this quote in the documentation says I only get 1 (random) hit when searching
If you don’t set the type and have many documents sharing the same
_id, you will end up getting only the first matching document.
how can I get this behaviour; finding all documents sharing an _id, possibly > 1 with different _type in the same index without an expensive _search query?
thanks!

Answer 1

A simple term query on "_id" worked for me.
So I created a trivial index and added two documents each, for two different types:
PUT /test_index
POST /test_index/_bulk
{"index":{"_type":"type1","_id":1}}
{"name":"type1 doc1"}
{"index":{"_type":"type1","_id":2}}
{"name":"type1 doc2"}
{"index":{"_type":"type2","_id":1}}
{"name":"type2 doc1"}
{"index":{"_type":"type2","_id":2}}
{"name":"type2 doc2"}
And this query will return both documents with id 1:
POST /test_index/_search
{
"query": {
"constant_score": {
"filter": {
"term": {
"_id": "1"
}
}
}
}
}
...
{
"took": 5,
"timed_out": false,
"_shards": {
"total": 5,
"successful": 5,
"failed": 0
},
"hits": {
"total": 2,
"max_score": 1,
"hits": [
{
"_index": "test_index",
"_type": "type1",
"_id": "1",
"_score": 1,
"_source": {
"name": "type1 doc1"
}
},
{
"_index": "test_index",
"_type": "type2",
"_id": "1",
"_score": 1,
"_source": {
"name": "type2 doc1"
}
}
]
}
}
Here's the code I used:
http://sense.qbox.io/gist/a8085b57c22631148dd4c67769307caf6425fd95