zhuzhurk opened a new pull request, #21743: URL: https://github.com/apache/flink/pull/21743
## What is the purpose of the change This change improves the `DefaultPreferredLocationsRetriever` so that it ignores the input locations of a ConsumePartitionGroup if the corresponding ConsumerVertexGroup is too large. This helps to avoid tasks to be unevenly distributed on nodes when running batch jobs or running jobs in session/standalone mode, because the consumers in this case will tend to be placed on the same node of the input vertex. ## Brief change log *(for example:)* - Changed `EdgeManagerBuildUtil` to set the ConsumedPartitionGroup/ConsumerVertexGroup to its corresponding ConsumerVertexGroup/ConsumedPartitionGroup - Changed `DefaultPreferredLocationsRetriever` to ignore the input locations of a ConsumePartitionGroup if the corresponding ConsumerVertexGroup is too large(compared to the ConsumePartitionGroup) ## Verifying this change - *Added unit tests in EdgeManagerBuildUtilTest and DefaultPreferredLocationsRetrieverTest* - *The change is also covered by existing tests of preferred location retriever* ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (yes / **no**) - The serializers: (yes / **no** / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (**yes** / no / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (yes / **no**) - If yes, how is the feature documented? (not applicable / docs / JavaDocs / not documented) -- 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