[jira] [Closed] (FLINK-13905) Separate checkpoint triggering into stages

["Piotr Nowojski (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-13905?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Piotr Nowojski closed FLINK-13905.
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    Resolution: Fixed

Merged into master as e1c9ede67c7963e458b7d84243581996aa0d27f8..0352fa595c57c3ccfaf31bc8f44be8107c4485bf

> Separate checkpoint triggering into stages
> ------------------------------------------
>
>                 Key: FLINK-13905
>                 URL: https://issues.apache.org/jira/browse/FLINK-13905
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Runtime / Checkpointing
>            Reporter: Biao Liu
>            Assignee: Biao Liu
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.11.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> Currently {{CheckpointCoordinator#triggerCheckpoint}} includes some heavy IO operations. We plan to separate the triggering into different stages. The IO operations are executed in IO threads, while other on-memory operations are not.
> This is a preparation for making all on-memory operations of {{CheckpointCoordinator}} single threaded (in main thread).
> Note that we could not put on-memory operations of triggering into main thread directly now. Because there are still some operations on a heavy lock (coordinator-wide).



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