Create specialized HadoopParquetReader
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描述
Setting up a specialized HadoopParquetReader allows for deprecating the Hadoop specific methods in ParquetReader as in PARQUET-2381. This could allow for an easier and more gentle transition away from the current Hadoop-coupled Parquet reader API by encouraging transitioning to this specialized class already, before completely phasing out the Hadoop methods from ParquetReader in the future.
**Reporter**: [Atour Mousavi Gourabi](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=amousavigourabi) / @amousavigourabi
#### Related issues:
- [Deprecate methods relying on Hadoop classes when alternatives using more generic Parquet interfaces are available](https://github.com/apache/parquet-java/issues/2838) (blocks)
**Note**: *This issue was originally created as [PARQUET-2403](https://issues.apache.org/jira/browse/PARQUET-2403). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*
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调研方向
首先检查 ParquetReader 的 Hadoop 专用方法,以及与 PARQUET-2381 和 issue 2838 相关的讨论。创建此处描述的专用 HadoopParquetReader,同时考虑迁移文档和未来的 deprecation 路径;当新类提供预期的、脱离与 Hadoop 耦合的 ParquetReader 方法的过渡时,即视为完成。
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- backend-api-design
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