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Posted to issues@flink.apache.org by "Arvid Heise (Jira)" <ji...@apache.org> on 2020/09/28 14:29:00 UTC

[jira] [Closed] (FLINK-18404) Make unaligned checkpoints rescalable

     [ https://issues.apache.org/jira/browse/FLINK-18404?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arvid Heise closed FLINK-18404.
-------------------------------
    Resolution: Duplicate

> Make unaligned checkpoints rescalable
> -------------------------------------
>
>                 Key: FLINK-18404
>                 URL: https://issues.apache.org/jira/browse/FLINK-18404
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Checkpointing
>    Affects Versions: 1.12.0
>            Reporter: Arvid Heise
>            Priority: Critical
>
> Currently, the in-flight data of unaligned checkpoints is not handled properly in rescaling scenarios. We guarded with a fail-safe exception against it. A proper rescaling support would increase the benefits of unaligned checkpoints.
> To rescale in-flight data, the state shard needs to be redistributed across all new assigned tasks and some additional filter needs to ensure that only the relevant key-groups are actually recovered (or processed).



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