jonathanc-n commented on code in PR #16727:
URL: https://github.com/apache/datafusion/pull/16727#discussion_r2195211529


##########
datafusion/physical-plan/src/joins/hash_join.rs:
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@@ -980,6 +980,17 @@ async fn collect_left_input(
         })
         .await?;
 
+    if batches.len() == 0 {

Review Comment:
   This will cause failures on `SymmetricHashJoin` as it will compare empty 
arrays. @nuno-faria If you have the time, would you like to work on this?



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