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Posted to issues@flink.apache.org by "Zhu Zhu (Jira)" <ji...@apache.org> on 2020/01/13 10:47:00 UTC
[jira] [Commented] (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 commented on FLINK-15568:
---------------------------------
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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