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Posted to jira@arrow.apache.org by "Ximo Guanter (Jira)" <ji...@apache.org> on 2021/02/25 16:39:00 UTC

[jira] [Created] (ARROW-11784) [Rust][DataFusion] CoalesceBatchesStream doesn't honor Stream interface

Ximo Guanter created ARROW-11784:
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             Summary: [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: Improvement
          Components: Rust - DataFusion
            Reporter: Ximo Guanter
             Fix For: 4.0.0


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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