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https://issues.apache.org/jira/browse/FLINK-31588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17704072#comment-17704072
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Rui Fan commented on FLINK-31588:
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Hi [~pnowojski] [~yuanmei] , please help take a look this ticket in your free
time, thanks!
I prefer generate unaligned checkpoint type based on persisted data. If it is
switched to an unaligned checkpoint and no data is persisted, it is still
considered an aligned checkpoint for flink users. WDYT?
> The unaligned checkpoint type is wrong at subtask level
> -------------------------------------------------------
>
> Key: FLINK-31588
> URL: https://issues.apache.org/jira/browse/FLINK-31588
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing
> Affects Versions: 1.16.0, 1.17.0
> Reporter: Rui Fan
> Assignee: Rui Fan
> Priority: Major
> Attachments: image-2023-03-23-18-45-01-535.png
>
>
> FLINK-20488 supported show checkpoint type for each subtask, and it based on
> received `CheckpointOptions` and it's right.
> However, FLINK-27251 supported timeout aligned to unaligned checkpoint
> barrier in the output buffers. It means the received `CheckpointOptions` can
> be converted from aligned checkpoint to unaligned checkpoint.
> So, the unaligned checkpoint type may be wrong at subtask level. For example,
> as shown in the figure below, Unaligned checkpoint type is false, but it is
> actually Unaligned checkpoint (persisted data > 0).
>
> !image-2023-03-23-18-45-01-535.png|width=1879,height=797!
>
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