Avoid FFI import/export when passing batches between two native plans #3925

What is the problem the feature request solves?

When Comet has a native ShuffleWriter and a native child plan, batches get created in native code, then imported into JVM, then exported back to native. The JVM side does not need to access the data so the import/export is unnecessary overhead.

I would like to explore a simpler approach where a simple pointer (for the whole batch) is passed back and forth without any additional processing.

Describe the potential solution

No response

Additional context

No response