LakshSingla opened a new pull request, #15032:
URL: https://github.com/apache/druid/pull/15032
### Description
`RowWalker` doesn't explicitly clean up the resources over the sequence that
it acquires. Therefore, queries acquiring resources like the merge buffers fail
to clean up the resources after they are done with it. This PR refactors the
code to clean up the result sequences when materializing the results as Frames.
The original PR that added this feature had a failing test that we ignored
for the time being since we weren't seeing it in testing, and assumed that it
might have been an issue with the `TestBuffers` class, however after facing
this again, and investigating it uncovered the reason why the resources weren't
getting cleaned up.
<hr>
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- [ ] using the [concurrency
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- [ ] added documentation for new or modified features or behaviors.
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- [ ] added or updated version, license, or notice information in
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- [ ] added integration tests.
- [ ] been tested in a test Druid cluster.
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