JingsongLi opened a new pull request #13301:
URL: https://github.com/apache/flink/pull/13301
## What is the purpose of the change
In HadoopPathBasedBulkWriter, getSize will invoke `FileSystem.exists` and
`FileSystem.getFileStatus`, but it is invoked per record.
There will be lots of visits to HDFS, may make HDFS pressure too high.
## Brief change log
Creating a new `HiveRollingPolicy`:
* Getting size of the file is too expensive. See
`HiveBulkWriterFactory#create`. We can't check for every element, which will
cause great pressure on DFS. Therefore, in this implementation, only check the
file size in `shouldRollOnProcessingTime`, which can effectively avoid DFS
pressure.
## Verifying this change
Manually testing.
## 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/Mesos, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? no
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