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Posted to dev@kafka.apache.org by "Francesco Nigro (Jira)" <ji...@apache.org> on 2022/05/13 18:15:00 UTC

[jira] [Created] (KAFKA-13900) Support Java 9 direct ByteBuffer Checksum methods

Francesco Nigro created KAFKA-13900:
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             Summary: Support Java 9 direct ByteBuffer Checksum methods
                 Key: KAFKA-13900
                 URL: https://issues.apache.org/jira/browse/KAFKA-13900
             Project: Kafka
          Issue Type: Improvement
          Components: clients, core
    Affects Versions: 3.1.1
            Reporter: Francesco Nigro


Java 9 has added a new Checksum method that can makes uses of ByteBuffer(s) (see https://docs.oracle.com/javase/9/docs/api/java/util/zip/Checksum.html#update-java.nio.ByteBuffer-): kafka already provides specific support for Java 9's Cr32C, hence it makes sense it's going to use the most optimized version of it, in case fed ByteBuffer is direct (read-only or not), instead of performing a computation byte-per-byte.

 

I'm aware that currently the client's Buffer pools aren't using direct ByteBuffer, but having full support for it can open the door to future interesting optimizations on it.



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