loquisgon opened a new pull request #11536:
URL: https://github.com/apache/druid/pull/11536
Recent testing have shown a potential performance degradation in the bounded
memory work for segment creation of batch ingestion. The reason is most
probably the fact that intermediate persists are blocking, serial, with
ingestion. We will add back concurrent persists and test performance to
validate that previous performance is back.
This PR has:
- [ X] been self-reviewed.
- [ ] using the [concurrency
checklist](https://github.com/apache/druid/blob/master/dev/code-review/concurrency.md)
(Remove this item if the PR doesn't have any relation to concurrency.)
- [ ] added documentation for new or modified features or behaviors.
- [ ] added Javadocs for most classes and all non-trivial methods. Linked
related entities via Javadoc links.
- [ ] added or updated version, license, or notice information in
[licenses.yaml](https://github.com/apache/druid/blob/master/dev/license.md)
- [X ] added comments explaining the "why" and the intent of the code
wherever would not be obvious for an unfamiliar reader.
- [X ] added unit tests or modified existing tests to cover new code paths,
ensuring the threshold for [code
coverage](https://github.com/apache/druid/blob/master/dev/code-review/code-coverage.md)
is met.
- [ ] added integration tests.
- [ ] been tested in a test Druid cluster.
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