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https://issues.apache.org/jira/browse/BEAM-8566?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maximilian Michels updated BEAM-8566:
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Status: Open (was: Triage Needed)
> Checkpoint buffer is flushed prematurely when another bundle is started
> during checkpointing
> --------------------------------------------------------------------------------------------
>
> Key: BEAM-8566
> URL: https://issues.apache.org/jira/browse/BEAM-8566
> Project: Beam
> Issue Type: Bug
> Components: runner-flink
> Reporter: Maximilian Michels
> Assignee: Maximilian Michels
> Priority: Major
> Fix For: 2.18.0
>
>
> As part of a checkpoint, the current bundle is finalized. When the bundle is
> finalized, the watermark, currently held back, may also be progressed which
> can cause the start of another bundle. When a new bundle is started, any
> to-be-buffered items from the previous bundle for the pending checkpoint may
> be emitted. This should not happen.
> This only effects portable pipelines where we have to hold back the watermark
> due to the asynchronous processing of elements.
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