lsyldliu opened a new pull request, #23035:
URL: https://github.com/apache/flink/pull/23035
## What is the purpose of the change
*Currently, Flink doesn't support scan source reuse when one source table is
referenced by different projection pushdown. For this problem, we can merge all
projections in one source, then the source can be reused. So this PR proposes
to support scan reusing with multiple different projection pushdown*
## Brief change log
- *Support scan reusing with multiple different projection pushdown*
- *Add Plan test to verify the changes*
## Verifying this change
This change added tests and can be verified as follows:
- *Added unit tests in ScanReuseTest*
- *Added integration test in ScanReuseITCase*
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (no)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (no)
- The serializers: (no)
- The runtime per-record code paths (performance sensitive): ( no )
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: ( no)
- The S3 file system connector: (no)
## Documentation
- Does this pull request introduce a new feature? (yes)
- If yes, how is the feature documented? (JavaDocs)
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: issues-unsubscr...@flink.apache.org
For queries about this service, please contact Infrastructure at:
us...@infra.apache.org
