andygrove commented on code in PR #2142:
URL: https://github.com/apache/datafusion-comet/pull/2142#discussion_r2274667166
##########
native/core/src/execution/planner.rs:
##########
@@ -2610,10 +2610,23 @@ impl From<ExpressionError> for DataFusionError {
/// modification. This is used to determine if we need to copy the input batch
to avoid
/// data corruption from reusing the input batch.
fn can_reuse_input_batch(op: &Arc<dyn ExecutionPlan>) -> bool {
- if op.as_any().is::<ProjectionExec>() ||
op.as_any().is::<LocalLimitExec>() {
- can_reuse_input_batch(op.children()[0])
+ if op.as_any().is::<ScanExec>() {
+ // JVM side can return arrow buffers to the pool
Review Comment:
I don't fully understand it yet. I filed
https://github.com/apache/datafusion-comet/issues/2147 to track figuring this
out. It only happened in a very small number of tests.
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