Dandandan commented on a change in pull request #9035:
URL: https://github.com/apache/arrow/pull/9035#discussion_r549490463
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File path: rust/datafusion/src/physical_plan/hash_join.rs
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@@ -186,8 +190,18 @@ impl ExecutionPlan for HashJoinExec {
})
.await?;
+ let num_rows: usize =
+ left_data.1.iter().map(|batch| batch.num_rows()).sum();
Review comment:
Maybe we want to put this behind a flag so we don't do this in the macro
so we don't compute the `num_rows` when not being logged?
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