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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2019/05/17 03:31:50 UTC
[GitHub] [flink] sunhaibotb opened a new pull request #8471:
[FLINK-12529][runtime] Release record-deserializer buffers timely to
improve the efficiency of heap usage on taskmanager
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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