[FEATURE] Support bucket_sort aggregations

[vladimir-ilnytskyi]

We really want to use newer version because of serializer speed AND really depend on this agg.
When is estimated release?

Elastic.Clients.Elasticsearch version: 8.0.1

Elasticsearch version: 8.5.x

.NET runtime version: .net6

Operating system version: not applicable

Description of the problem including expected versus actual behavior:
A clear and concise description of what the bug is.

Steps to reproduce:
no query language for bucket_sort, found in source code this:
case “avg_bucket”:
throw new Exception(“The aggregate in response is not yet supported.“);
case “bucket_script”:
throw new Exception(“The aggregate in response is not yet supported.“);
case “bucket_count_ks_test”:
throw new Exception(“The aggregate in response is not yet supported.“);
case “bucket_correlation”:
throw new Exception(“The aggregate in response is not yet supported.“);
case “bucket_selector”:
throw new Exception(“The aggregate in response is not yet supported.“);
case “bucket_sort”:
throw new Exception(“The aggregate in response is not yet supported.“);

Expected behavior
support added

[stevejgordon]

Hi, @vladimir-ilnytskyi.

This is not currently available in the 8.0.0 as documented in our supported aggregations in our release notes. We will (re)introduce this (and other) aggregation types in future client releases. Thanks for raising your need for this type, as it helps prioritise that work.

[vladimir-ilnytskyi]

Hello!

Thanks for the reply!
Any rough estimations on when this is planned to be implemented in beta?

[stevejgordon]

@vladimir-ilnytskyi I can't provide any timeframes at the moment.