Add log user query param

[bowenxia]

What changed?
Add log user query param

Why?
for Pinot/ES comparator usage

How did you test it?
unit test, integration test

Potential risks

Release notes

Documentation Changes

[neil-xie]

Is there any reason we parse the query here instead of doing it in the workflow? I am asking because if we moved to the workflow code, it will be much easier here to log and export the queries, we don't need to remove the code after migration, etc.

[bowenxia]

Is there any reason we parse the query here instead of doing it in the workflow? I am asking because if we moved to the workflow code, it will be much easier here to log and export the queries, we don't need to remove the code after migration, etc.

You are right. We can put it in the workflow.

[neil-xie]

LGTM