crepererum commented on code in PR #15030:
URL: https://github.com/apache/datafusion/pull/15030#discussion_r1987125412
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datafusion/physical-plan/src/execution_plan.rs:
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@@ -260,13 +260,30 @@ pub trait ExecutionPlan: Debug + DisplayAs + Send + Sync {
/// used.
/// Thus, [`spawn`] is disallowed, and instead use [`SpawnedTask`].
///
+ /// To enable timely cancellation, the [`Stream`] that is returned must not
+ /// pin the CPU and must yield back to the tokio runtime regularly. This
can
Review Comment:
I don't think it's the only place.
https://github.com/apache/datafusion/pull/14028 gives another example where
periodic yielding is a good idea.
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