Copilot commented on code in PR #16443:
URL: https://github.com/apache/datafusion/pull/16443#discussion_r2173686344
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datafusion/physical-plan/src/joins/nested_loop_join.rs:
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@@ -729,10 +716,26 @@ struct NestedLoopJoinStream<T> {
right_side_ordered: bool,
/// Current state of the stream
state: NestedLoopJoinStreamState,
+ #[allow(dead_code)]
+ // TODO: remove this field ??
/// Transforms the output batch before returning.
batch_transformer: T,
/// Result of the left data future
left_data: Option<Arc<JoinLeftData>>,
+
+ // Tracks progress when building join result batches incrementally
+ // Contains (build_indices, probe_indices, processed_count) where:
+ // - build_indices: row indices from build-side table (left table)
+ // - probe_indices: row indices from probe-side table (right table)
+ // - processed_count: number of index pairs already processed into output
batches
+ // We have completed join result for indices [0..processed_count)
+ join_result_status: Option<(
+ PrimitiveArray<UInt64Type>,
+ PrimitiveArray<UInt32Type>,
+ usize,
+ )>,
+
Review Comment:
[nitpick] The 'join_result_status' field contains a TODO comment indicating
uncertainty. Consider either removing this field if it is no longer necessary
or clarifying its purpose.
```suggestion
/// Transforms the output batch before returning.
batch_transformer: T,
/// Result of the left data future
left_data: Option<Arc<JoinLeftData>>,
```
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