2010YOUY01 commented on code in PR #16500:
URL: https://github.com/apache/datafusion/pull/16500#discussion_r2187952197
##########
datafusion/physical-plan/src/joins/nested_loop_join.rs:
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@@ -825,7 +825,8 @@ impl<T: BatchTransformer> NestedLoopJoinStream<T> {
handle_state!(ready!(self.fetch_probe_batch(cx)))
}
NestedLoopJoinStreamState::ProcessProbeBatch(_) => {
- handle_state!(self.process_probe_batch())
+ let poll = handle_state!(self.process_probe_batch());
+ self.join_metrics.baseline.record_poll(poll)
}
NestedLoopJoinStreamState::ExhaustedProbeSide => {
Review Comment:
I think this state is also possible to output final result: because if it's
left join, NLJ has to exhaust right input first, then output the unmatched left
rows.
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