Values in filter terms being ignored during aggregation

[giudicelli]

Elasticsearch version: 2.4.5

Plugins installed: none

JVM version:
java version "1.8.0_73"
Java(TM) SE Runtime Environment (build 1.8.0_73-b02)
Java HotSpot(TM) 64-Bit Server VM (build 25.73-b02, mixed mode)

OS version :
Linux XXXX 3.14.32-xxxx-grs-ipv6-64 #9 SMP Thu Oct 20 14:53:52 CEST 2016 x86_64 x86_64 x86_64 GNU/Linux

Description of the problem including expected versus actual behavior:
When using a reference in "terms" for the "_uid" field in an aggregation, the filter is being ignored.
However, when using the same filter on a normal search, the filter is being honored.

Steps to reproduce:
Create an index and a type holding in a field a list of _uid, in my case the field holds over 50k uids.
Run an aggregation filtering on this list of _uid.
The filter is being ignored, and aggregation is ran on every entry...

Example:
{ "size":0, "filter":{ "terms":{ "_uid":{ "index":"CACHE_INDEX", "type":"Cache", "id":"CacheId", "path":"UIDSList" } } }, "aggs":{ "counter":{ "date_histogram":{ "field":"DateField", "interval":"day", "missing":0, "time_zone":"+02:00" } } } }

The queried type was created with the following meta parameters:
{ "_all" : {"enabled" : false}, "date_detection": false, "dynamic": "strict", "properties": { ... } }

[rjernst]

Please ask questions on our forum. We use github for feature requests and confirmed bug reports.

Your _uid there is not a value, it is an object, and I suspect lacked validation in 2.x. Validation is much better in 5.0+ since The Great Query Refactoring.