apache / apache/parquet-java

Deprecate methods relying on Hadoop classes when alternatives using more generic Parquet interfaces are available

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Component: Java Component: Parquet Priority: Major Type: enhancement
Dominant language
Java
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Description

Deprecate methods relying on Hadoop classes when alternatives using Parquet interfaces are available. This would allow for fully decoupling from Hadoop for simple read/write (and potentially rewrite) operations in the future, where we are now only on track to decouple from hadoop-client-runtime in the near future.

We could decide to still keep Hadoop methods available through convenience classes in their own Hadooped module, but for core read/write logic to be available without forcing users into the Hadoop dependency, we will need to fully strip the core readers and writers of these references.

**Reporter**: [Atour Mousavi Gourabi](https://issues.apache.org/jira/secure/ViewProfile.jspa?name=amousavigourabi) / @amousavigourabi
#### Related issues:
- [Create specialized HadoopParquetWriter](https://github.com/apache/parquet-java/issues/2854) (is blocked by)
- [Create specialized HadoopParquetReader](https://github.com/apache/parquet-java/issues/2855) (is blocked by)

**Note**: *This issue was originally created as [PARQUET-2381](https://issues.apache.org/jira/browse/PARQUET-2381). Please see the [migration documentation](https://issues.apache.org/jira/browse/PARQUET-2502) for further details.*

Contributor guide

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Research direction

Start with the migration documentation linked in the issue, then read the related specialized HadoopParquetWriter and HadoopParquetReader issues. Identify the core read/write methods that rely on Hadoop classes and the available generic Parquet interfaces. Done means those methods are deprecated or decoupled as described, with the Hadoop-specific path isolated without forcing the dependency on core users.

Written by the indexing model from the issue text.

Assessment

Tech stack
java
Domain
data-engineering
Issue type
Refactor
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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