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Posted to issues@flink.apache.org by "Yun Gao (Jira)" <ji...@apache.org> on 2022/04/13 06:28:05 UTC

[jira] [Updated] (FLINK-18753) Support local recovery for Unaligned checkpoints

     [ https://issues.apache.org/jira/browse/FLINK-18753?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yun Gao updated FLINK-18753:
----------------------------
    Fix Version/s: 1.16.0

> Support local recovery for Unaligned checkpoints
> ------------------------------------------------
>
>                 Key: FLINK-18753
>                 URL: https://issues.apache.org/jira/browse/FLINK-18753
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Checkpointing, Runtime / Task
>    Affects Versions: 1.11.0
>            Reporter: Roman Khachatryan
>            Priority: Minor
>              Labels: auto-deprioritized-major
>             Fix For: 1.15.0, 1.16.0
>
>
> There is standard mechanism of writing two duplicating streams with state data: to DFS and to local FS. On recovery, if local state is present and it matches state on JM then it will be used (instead of downloading state from DFS).
> Currently, local recovery is not supported if running with Unaligned checkpoints enabled.
> To enable it, we need to
>  # write this second stream (see CheckpointStreamWithResultProvider.getCheckpointOutputStream)
>  # make sure localState is included into the snapshot reported to JM
>  



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