[
https://issues.apache.org/jira/browse/FLINK-12474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16839230#comment-16839230
]
zhijiang commented on FLINK-12474:
----------------------------------
[~pnowojski] thanks for the confirmation!
Yes, the `SingleInputGate` would be notified by canceler thread after calling
`SingleInputGate#close()`. But for the case of `UnionInputGate` if the task is
blocked by `wait()` because of no available data, I think it has to be wait
the canceling timeout or I missed other parts to unblock task thread.
Anyway you could solve this issue in `CheckpointBarrierHandler`, then I could
close this jira. :)
> UnionInputGate should be notified when closing SingleInputGate by canceler
> thread
> ---------------------------------------------------------------------------------
>
> Key: FLINK-12474
> URL: https://issues.apache.org/jira/browse/FLINK-12474
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Network
> Reporter: zhijiang
> Priority: Minor
>
> If task is being canceled, the `SingleInputGate` would be closed by canceler
> thread. If the `SingleInputGate` is waiting for buffer,
> `inputChannelWithData` would be notified to wake task thread to exit early.
> But if the `UnionInputGate` is waiting for buffer, task thread is still
> stucking in wait when `SingleInputGate` is closed until cancel timeout.
> To make task exit early in this case, we could make `SingleInputGate` further
> notify `UnionInputGate` after it is closed, then it could also wake task
> thread to exit during canceling.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
