[jira] [Updated] (FLINK-14971) Make all the non-IO operations in CheckpointCoordinator single-threaded

["Robert Metzger (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-14971?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Metzger updated FLINK-14971:
-----------------------------------
    Fix Version/s:     (was: 1.12.0)
                   1.13.0

> Make all the non-IO operations in CheckpointCoordinator single-threaded
> -----------------------------------------------------------------------
>
>                 Key: FLINK-14971
>                 URL: https://issues.apache.org/jira/browse/FLINK-14971
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Runtime / Checkpointing
>            Reporter: Biao Liu
>            Assignee: Biao Liu
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.13.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Currently the ACK and declined message handling are executed in IO thread. This is the only rest part that non-IO operations are executed in IO thread. It blocks introducing main thread executor for {{CheckpointCoordinator}}. It would be resolved in this task.
> After resolving the ACK and declined message issue, the main thread executor would be introduced into {{CheckpointCoordinator}} to instead of timer thread. However the timer thread would be kept (maybe for a while temporarily) to schedule periodic triggering, since FLINK-13848 is not accepted yet.



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