alamb commented on code in PR #6449:
URL: https://github.com/apache/arrow-datafusion/pull/6449#discussion_r1207091236
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datafusion/core/src/physical_plan/coalesce_partitions.rs:
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@@ -199,6 +200,28 @@ impl Stream for MergeStream {
cx: &mut std::task::Context<'_>,
) -> Poll<Option<Self::Item>> {
let poll = self.input.poll_recv(cx);
+
+ // If the input stream is done, wait for all tasks to finish and return
+ // the failure if any.
+ if let Poll::Ready(None) = poll {
+ let fut = self.tasks.join_next();
Review Comment:
It seems like this only checks the first future that finishes. Would it work
if there were multiple input tasks and the first one that finished was not the
one that `panic`d?
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