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  1. Apache Arrow
  2. ARROW-18020

[Java][CI] Java Support Version Policy



    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • 11.0.0
    • None
    • Documentation, Java
    • None


      Current status

      1. Apache Arrow Java is compiled and tested by JDK 8, 11, 17, 18 but packaged with source/target JDK8

      Changes implemented by this PR https://github.com/apache/arrow/pull/13072

      1. Apache Arrow Java project are continuing compiled and tested by JDK 8, 11, 17, 18 but packaged with source/target JDK8
      2. If Apache Arrow Java project is building with JDK11+ validate the project are tested against the module-info.java definitions
      3. There are not CI implementation to deliver Jar library with JDK8 & JDK11+ (we need to define what will be our next step for JDK versions)
      4. We probably are breaking APIs because we are changing package name to ensure unique package names on the project required by module-info.java
      5. We are added a new project that contains Apache Arrow Netty custom implementation needed for
      6. There are remaining modules pending to implement modules with module-info.java files. This PR contains modules-info.java for: Format / Memory / Vector

      Next steps

      1. Implement cross-compilation with JDK 11+ and packaging with release=8 (continue offering support for JDK8):
      That is not posible, if we compile with --release=8 we will have problems to access sun.misc.Unsafe that is not as exposed/public/documented API for N >= 9: -source N -target N --system <documented-APIs-from-N>.    (https://openjdk.org/jeps/247)
      2. We have these options for our next steps:

      • Option 1.- Maintain all as it is now, continue packaging with source/target JDK8
      • Option 2.- Change/Update/Modify use of sun.misc. classes dependencies to be able to support cross-compilation (-release 8) to packaging with JDK11+ and continue offering support for JDK8 also
      jdeps --jdk-internals arrow-memory-unsafe-10.0.0-SNAPSHOT.jar
      arrow-memory-unsafe-10.0.0-SNAPSHOT.jar -> jdk.unsupported
         org.apache.arrow.memory.unsafe.UnsafeAllocationManager -> sun.misc.Unsafe                                    JDK internal API (jdk.unsupported)
      Warning: JDK internal APIs are unsupported and private to JDK implementation that are
      subject to be removed or changed incompatibly and could break your application.
      Please modify your code to eliminate dependence on any JDK internal APIs.
      For the most recent update on JDK internal API replacements, please check:
      JDK Internal API                         Suggested Replacement
      ----------------                         ---------------------
      sun.misc.Unsafe                          See http://openjdk.java.net/jeps/260 

      If you decided to push some of this options please use that [ML|https://lists.apache.org/thread/phpgpydtt3yrgnncdyv4qdq1gf02s0yj] to move on next steps.


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              Unassigned Unassigned
              dsusanibara David Dali Susanibar Arce
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