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https://issues.apache.org/jira/browse/FLINK-33897?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17803185#comment-17803185
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Piotr Nowojski commented on FLINK-33897:
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I have mixed feelings. Shouldn't the solution be to just use/enable unaligned
checkpoints? If one sets the alignment timeout to some reasonable value, I
don't see a reason for someone to use aligned checkpoints anymore. Maybe
instead let's consider deprecating aligned checkpoints without timeout?
Is there some real world motivation behind this feature?
I would be -1 for this feature, if it requires complicating/making changes to
the actual barrier handling (apart of replacing
{{SingleCheckpointBarrierHandler#aligned}} with
{{SingleCheckpointBarrierHandler#alternating}} call). This code is complicated
and in the past we had a lot of deadlocks, data corruptions and other critical
bugs around those areas, so keeping it as simple as possible and minimising
amount of supported features is quite important.
> Allow triggering unaligned checkpoint via CLI
> ---------------------------------------------
>
> Key: FLINK-33897
> URL: https://issues.apache.org/jira/browse/FLINK-33897
> Project: Flink
> Issue Type: Improvement
> Components: Command Line Client, Runtime / Checkpointing
> Reporter: Zakelly Lan
> Assignee: Zakelly Lan
> Priority: Major
>
> After FLINK-6755, user could trigger checkpoint through CLI. However I
> noticed there would be value supporting trigger it in unaligned way, since
> the job may encounter a high back-pressure and an aligned checkpoint would
> fail.
>
> I suggest we provide an option '-unaligned' in CLI to support that.
>
> Similar option would also be useful for REST api
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