sunhaibotb opened a new pull request #8471: [FLINK-12529][runtime] Release record-deserializer buffers timely to improve the efficiency of heap usage on taskmanager URL: https://github.com/apache/flink/pull/8471 ## What is the purpose of the change This pull request releases the buffer of the corresponding record deserializer after receiving `EndOfPartitionEvent` from the input channel to improve the efficiency of heap memory usage on taskmanager. ## Brief change log - Change `StreamInputProcessor` to release the buffer of the corresponding record deserializer immediately after receiving `EndOfPartitionEvent` from the input channel - Change `StreamTwoInputProcessor` to release the buffer of the corresponding record deserializer immediately after receiving `EndOfPartitionEvent` from the input channel ## Verifying this change This change is already covered by existing tests, such as `OneInputStreamTaskTest`, `TwoInputStreamTaskTest`. ## 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, Yarn/Mesos, 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)
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