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Posted to issues@flink.apache.org by "Zhu Zhu (Jira)" <ji...@apache.org> on 2020/01/13 10:52:00 UTC

[jira] [Comment Edited] (FLINK-15568) RestartPipelinedRegionStrategy: not ensure the EXACTLY_ONCE semantics, in 1.8 versions

    [ https://issues.apache.org/jira/browse/FLINK-15568?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17014212#comment-17014212 ] 

Zhu Zhu edited comment on FLINK-15568 at 1/13/20 10:51 AM:
-----------------------------------------------------------

Hi [~andrew_lin], RestartPipelinedRegionStrategy is experimental in 1.8 with some known issues. It becomes production ready since 1.9 (FLINK-4256). State restore is also supported since then.
There is no plan to backport the changes to 1.8 since the changes are huge and not bug fixes.


was (Author: zhuzh):
Hi [~andrew_lin], RestartPipelinedRegionStrategy is experimental in 1.8 with some known issues. It becomes production ready since 1.9 (FLINK-4256).
There is no plan to backport the changes to 1.8 since the changes are huge and not bug fixes.

> RestartPipelinedRegionStrategy: not ensure the EXACTLY_ONCE semantics, in 1.8 versions
> --------------------------------------------------------------------------------------
>
>                 Key: FLINK-15568
>                 URL: https://issues.apache.org/jira/browse/FLINK-15568
>             Project: Flink
>          Issue Type: Improvement
>          Components: Runtime / Checkpointing
>    Affects Versions: 1.8.0, 1.8.1, 1.8.3
>            Reporter: Andrew.D.lin
>            Priority: Minor
>         Attachments: image-2020-01-13-16-40-47-888.png
>
>
> In 1.8* versions, FailoverRegion.java restart method  not restore from latest checkpoint and marked TODO.
> Should we support this feature (region restart) in flink 1.8?



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