lsyldliu opened a new pull request, #21966:
URL: https://github.com/apache/flink/pull/21966
## What is the purpose of the change
*As the issue description, currently we can't get Hadoop-related
authentication information from flink-conf.yaml when create `ParquetReader`
using S3AFileSystem in TM, but in JM, `SourceCoordinator` works well when
getFileStatus from s3a. After taking a deep analysis of the source code, I
found that on the JM side, we use Flink's own FileSystem to get `FileStatus`,
which can get the authentication information from flink-conf.yaml; but on the
TM side, we use Hadoop's own FileSystem to create footer, which can't get the
authentication information, which is an inconsistent behavior and causes the
problem of the issue description. So we should use Flink's FileSystem on both
JM side and TM side. This PR is a bugfix.*
## Brief change log
- *Extracting the public class `ParquetInputFile`*
- *Using the Flink FileSystem to create ParquetFileReader in TM*
## Verifying this change
This change is already covered by existing tests in the parquet module.
## 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? (no)
- If yes, how is the feature documented? (JavaDocs)
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