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https://issues.apache.org/jira/browse/FLINK-13698?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-13698:
-----------------------------------
Labels: auto-deprioritized-critical auto-deprioritized-major stale-minor
(was: auto-deprioritized-critical auto-deprioritized-major)
I am the [Flink Jira Bot|https://github.com/apache/flink-jira-bot/] and I help
the community manage its development. I see this issues has been marked as
Minor but is unassigned and neither itself nor its Sub-Tasks have been updated
for 180 days. I have gone ahead and marked it "stale-minor". If this ticket is
still Minor, please either assign yourself or give an update. Afterwards,
please remove the label or in 7 days the issue will be deprioritized.
> Rework threading model of CheckpointCoordinator
> -----------------------------------------------
>
> Key: FLINK-13698
> URL: https://issues.apache.org/jira/browse/FLINK-13698
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Checkpointing
> Affects Versions: 1.10.0
> Reporter: Piotr Nowojski
> Priority: Minor
> Labels: auto-deprioritized-critical, auto-deprioritized-major,
> stale-minor
>
> Currently {{CheckpointCoordinator}} and {{CheckpointFailureManager}} code is
> executed by multiple different threads (mostly {{ioExecutor}}, but not only).
> It's causing multiple concurrency issues, for example:
> https://issues.apache.org/jira/browse/FLINK-13497
> Proper fix would be to rethink threading model there. At first glance it
> doesn't seem that this code should be multi threaded, except of parts doing
> the actual IO operations, so it should be possible to run everything in one
> single ExecutionGraph's thread and just run asynchronously necessary IO
> operations with some feedback loop ("mailbox style").
> I would strongly recommend fixing this issue before adding new features in
> the \{{CheckpointCoordinator}} component.
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