andygrove commented on code in PR #2052:
URL: https://github.com/apache/datafusion-comet/pull/2052#discussion_r2246069765
##########
native/core/src/execution/jni_api.rs:
##########
@@ -341,10 +341,29 @@ fn prepare_output(
let mut i = 0;
while i < results.len() {
let array_ref =
results.get(i).ok_or(CometError::IndexOutOfBounds(i))?;
- array_ref
- .to_data()
- .move_to_spark(array_addrs[i], schema_addrs[i])?;
+ if array_ref.offset() != 0 {
+ // https://github.com/apache/datafusion-comet/issues/2051
+ // Bug with non-zero offset FFI, so take to a new array which
will have an offset of 0.
+ let indices = UInt32Array::from((0..num_rows as
u32).collect::<Vec<u32>>());
+ let new_array = take(
+ array_ref,
+ &indices,
+ Some(TakeOptions {
+ check_bounds: false,
Review Comment:
Makes sense
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