[BUG] Query displayed in details page does not match the input query

[deshsidd]

What is the bug?

Query displayed in details page does not match the input query and has additional attributes (probably defaults).

Ran the following query:

{
  "query": {
    "match": {
      "name": "John"
    }
  }
}

Query details page shows the following:

Is this the expected behavior?

How can one reproduce the bug?

Steps to reproduce the behavior.

What is the expected behavior?

A clear and concise description of what you expected to happen.

What is your host/environment?

Operating system, version.

Do you have any screenshots?

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Do you have any additional context?

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[dblock]

[Catch All Triage - 1, 2, 3]

[dzane17]

I do not see a straightforward solution for this. Every *QueryBuilder class has it's own set of "default" fields which are present for every instance of that class. For the match query example in this github issue, the fields (query, operator, prefix_length, max_extensions, fuzzy_trans...) are defined in the MatchQueryBuilder() constructor regardless of if they were specified in the original request.

    public MatchQueryBuilder(StreamInput in) throws IOException {
        super(in);
        fieldName = in.readString();
        value = in.readGenericValue();
        operator = Operator.readFromStream(in);
        prefixLength = in.readVInt();
        maxExpansions = in.readVInt();
        fuzzyTranspositions = in.readBoolean();
        lenient = in.readBoolean();
        zeroTermsQuery = MatchQuery.ZeroTermsQuery.readFromStream(in);
        // optional fields
        analyzer = in.readOptionalString();
        minimumShouldMatch = in.readOptionalString();
        fuzzyRewrite = in.readOptionalString();
        fuzziness = in.readOptionalWriteable(Fuzziness::new);
        cutoffFrequency = in.readOptionalFloat();
        autoGenerateSynonymsPhraseQuery = in.readBoolean();
    }

ref: https://github.com/opensearch-project/OpenSearch/blob/main/server/src/main/java/org/opensearch/index/query/MatchQueryBuilder.java#L135-L152

To obtain the bare search request, we cannot rely on SearchSourceBuilder passed via SearchPhaseContext.

[deshsidd]

Thanks @dzane17 , looks like we will need core changes here to either intercept the query or make sure we have a way to get toString() without including default values. Will likely target this post 2.19