Mike Seddon created ARROW-11687:
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Summary: [Rust][DataFusion] RepartitionExec Hanging
Key: ARROW-11687
URL: https://issues.apache.org/jira/browse/ARROW-11687
Project: Apache Arrow
Issue Type: Bug
Reporter: Mike Seddon
Assignee: Mike Seddon
Found an interesting defect where the final partition of the
`RepartitionExec::execute` thread spawner was consistently not being spawned
via `tokio::spawn`. This meant that `RepartitionStream::poll_next` was sitting
waiting forever for data that never arrived.
It looks like a race condition where the `JoinHandle` was not being `await`ed
and something strange going on with the internals of tokio like lazy evaluation?
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