Reproducible gist: https://gist.github.com/brusic/81e1552ffd49a1f6a7aa
Surely I cannot be the only one to have encountered this issue.
--
Ivan
On Mon, Nov 10, 2014 at 12:53 PM, Ivan Brusic <i...@brusic.com> wrote:
> Is it possible to aggregate only on the nested documents that are returned
> by a (filtered) query? For what I can tell when using a nested aggregation,
> it will function on all nested documents of the parent documents whose
> nested document satisfy a nested query/filter. Did that make sense? :) Is
> this the same limitation as issue #3022? I know that number by heart by now.
>
> For example, I have 3 simple documents, where the nstd object is defined
> as nested:
>
> {
> "name" : "foo",
> "nstd" : [
> {
> "ID" : 1
> }
> ]
> }
> '
>
> {
> "name" : "bar",
> "nstd" : [
> {
> "ID" : 2
> }
> ]
> }
> '
>
> {
> "name" : "baz",
> "nstd" : [
> {
> "ID" : 1
> },
> {
> "ID" : 2
> }
> ]
> }
> '
>
> I then execute a simple nested query:
>
> "query": {
> "filtered": {
> "query": {
> "match_all": {}
> },
> "filter": {
> "nested": {
> "path": "nstd",
> "filter": {
> "term": {
> "nstd.ID": 1
> }
> }
> }
> }
> }
> }
>
> If I aggregate on the nstd.ID field, I will always get back results for
> nested documents that were excluded by the filter:
>
> "buckets": [
> {
> "key": 1,
> "doc_count": 2
> },
> {
> "key": 2,
> "doc_count": 1
> }
> ]
>
> Since the ID:2 field does not match the filter, it should not be returned
> with the aggregation. I have tried using a filter aggregation with the same
> filter used in the filtered query, but I receive the same results.
>
> Cheers,
>
> Ivan
>
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