LakshSingla opened a new pull request, #16579:
URL: https://github.com/apache/druid/pull/16579
### Description
This PR adds a new query context parameter `removeNullBytes` which the users
can set to remove null bytes while writing the string and string array data to
frames. To remove null bytes, the users wrap the string columns in a `REPLACE`
function. The query planner can sometimes optimize and add the function in the
later stages, especially when subqueries are involved. This can cause the query
to fail when run with the MSQ engine, which cannot work with null bytes in
string fields. Adding the context parameter ensures that the null bytes are
removed from the first stage itself when the data is read.
#### Release note
To be added
<hr>
##### Key changed/added classes in this PR
* `MyFoo`
* `OurBar`
* `TheirBaz`
<hr>
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- [ ] added integration tests.
- [ ] been tested in a test Druid cluster.
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