andygrove opened a new pull request, #1192: URL: https://github.com/apache/datafusion-comet/pull/1192
## Which issue does this PR close? <!-- We generally require a GitHub issue to be filed for all bug fixes and enhancements and this helps us generate change logs for our releases. You can link an issue to this PR using the GitHub syntax. For example `Closes #123` indicates that this PR will close issue #123. --> Part of https://github.com/apache/datafusion-comet/issues/1123 This helps with the preparation for https://github.com/apache/datafusion-comet/issues/1178 ## Rationale for this change <!-- Why are you proposing this change? If this is already explained clearly in the issue then this section is not needed. Explaining clearly why changes are proposed helps reviewers understand your changes and offer better suggestions for fixes. --> We currently perform encoding + compression in native code and decoding + decompression in JVM code. There are some downsides to this approach: - We need compatible JVM and Rust compression libraries (this seems challenging for LZ4) - We need compatible JVM and Rust encoding libraries (we use Arrow IPC currently) - We cannot have unit tests for roundtrip encoding and compression, only integration tests - We are missing out on performance, potentially ## What changes are included in this PR? <!-- There is no need to duplicate the description in the issue here but it is sometimes worth providing a summary of the individual changes in this PR. --> - Move some shuffle classes from `common` module to `spark` module - Call native code for decompression + decoding - Implement unit tests for round-trip ## How are these changes tested? <!-- We typically require tests for all PRs in order to: 1. Prevent the code from being accidentally broken by subsequent changes 2. Serve as another way to document the expected behavior of the code If tests are not included in your PR, please explain why (for example, are they covered by existing tests)? --> Existing tests -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: github-unsubscr...@datafusion.apache.org For additional commands, e-mail: github-h...@datafusion.apache.org
