andygrove commented on issue #4153:
URL:
https://github.com/apache/datafusion-comet/issues/4153#issuecomment-4348674826
One possible way of doing this is to "fall back" to JVM for some parts, but
without c2r/r2c transitions
```
CometTransferToNative (no conversion)
CometJavaProject (just for subset of expressions that need to be evaluated
in JVM).
CometTranserToJvm (no conversion)
CometProject (native)
CometFilter
CometNativeScan
```
This adds lots of complexity, but little actual overhead - just more JNI
transfers.
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