Required parameter K in KnnQuery

[AJStorteeboom]

Java API client version

8.13

Java version

17

Elasticsearch Version

12

Problem description

I am trying to execute a KnnQuery (Knn query | Elasticsearch Guide [8.13] | Elastic 1) in my java application

(So not the knn search: k-nearest neighbor (kNN) search | Elasticsearch Guide [8.13] | Elastic).

When you use knn in a query, you can't set parameter k since the size parameter is used.

But, the Java client with version 8.13 requires the k parameter: (co.elastic.clients.util.MissingRequiredPropertyException: Missing required property 'KnnQuery.k' )

So my problem is kind of a deadlock. Elasticsearch doesn't support the k parameter when knn is used in a query, but the java client requires the k parameter.

I've posted it on the forum of elastic and they told me to create an issue since it is a bug: https://discuss.elastic.co/t/knnquery-in-java-client/356645

[l-trotta]

Hello, thank you for the report! This is an issue in the API specification used to produce the Java code, we'll fix it and then regenerate the client to solve this.

[jerryguowei]

Is there an update on when we release this fix?

[l-trotta]

It was recently fixed in the spec with this PR, so it should be in the next release of the client.

[elias-fauser]

@l-trotta We are very happy the issue was quickly fixed. We are currently actively waiting for this fix in order to deploy a query update. Is there any information on when the next release will take place?

[l-trotta]

there should be a new release before the end of next month, I'll ping you in case of an earlier release.

[l-trotta]

fixed in 8.13.3