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https://issues.apache.org/jira/browse/FLINK-5086?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Flink Jira Bot updated FLINK-5086:
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Labels: auto-deprioritized-major stale-minor (was:
auto-deprioritized-major)
I am the [Flink Jira Bot|https://github.com/apache/flink-jira-bot/] and I help
the community manage its development. I see this issues has been marked as
Minor but is unassigned and neither itself nor its Sub-Tasks have been updated
for 180 days. I have gone ahead and marked it "stale-minor". If this ticket is
still Minor, please either assign yourself or give an update. Afterwards,
please remove the label or in 7 days the issue will be deprioritized.
> Clean dead snapshot files produced by the tasks failing to acknowledge
> checkpoints
> ----------------------------------------------------------------------------------
>
> Key: FLINK-5086
> URL: https://issues.apache.org/jira/browse/FLINK-5086
> Project: Flink
> Issue Type: Bug
> Components: Runtime / Checkpointing
> Reporter: Xiaogang Shi
> Priority: Minor
> Labels: auto-deprioritized-major, stale-minor
>
> A task may fail when performing checkpoints. In that case, the task may have
> already copied some data to external storage. But since the task fails to
> send the state handler to {{CheckpointCoordinator}}, the copied data will not
> be deleted by {{CheckpointCoordinator}}.
> I think we must find a method to clean such dead snapshot data to avoid
> unlimited usage of external storage.
> One possible method is to clean these dead files when the task recovers. When
> a task recovers, {{CheckpointCoordinator}} will tell the task all the
> retained checkpoints. The task then can scan the external storage to delete
> all the snapshots not in these retained checkpoints.
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