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https://issues.apache.org/jira/browse/ARROW-11784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Lamb resolved ARROW-11784.
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Resolution: Fixed
Issue resolved by pull request 9574
[https://github.com/apache/arrow/pull/9574]
> [Rust][DataFusion] CoalesceBatchesStream doesn't honor Stream interface
> -----------------------------------------------------------------------
>
> Key: ARROW-11784
> URL: https://issues.apache.org/jira/browse/ARROW-11784
> Project: Apache Arrow
> Issue Type: Bug
> Components: Rust - DataFusion
> Reporter: Ximo Guanter
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0
>
> Time Spent: 1h
> Remaining Estimate: 0h
>
> The Stream interface has a contract which states that you cannot poll anymore
> once you have received None. See [futures::prelude::Stream - Rust
> (docs.rs)|https://docs.rs/futures/0.3.13/futures/prelude/trait.Stream.html#panics]
> This is not being honored and it causes a hand if you CoallesceBatchesExec
> after a RepartitionExec
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