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Posted to issues@flink.apache.org by "Stephan Ewen (JIRA)" <ji...@apache.org> on 2016/08/24 21:20:21 UTC
[jira] [Resolved] (FLINK-4417) Checkpoints should be subsumed by
CheckpointID not, by timestamp
[ https://issues.apache.org/jira/browse/FLINK-4417?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Stephan Ewen resolved FLINK-4417.
---------------------------------
Resolution: Fixed
Fixed via 4e9d1775b5514c87981c78d55323cc2b17361867
Thank you for the contribution!
> Checkpoints should be subsumed by CheckpointID not, by timestamp
> ----------------------------------------------------------------
>
> Key: FLINK-4417
> URL: https://issues.apache.org/jira/browse/FLINK-4417
> Project: Flink
> Issue Type: Bug
> Components: State Backends, Checkpointing
> Affects Versions: 1.1.2
> Reporter: Stephan Ewen
> Assignee: ramkrishna.s.vasudevan
> Fix For: 1.2.0
>
>
> Since the system clocks cannot be expected to be stable/monotonous, the subsumption logic in the checkpoint coordinator should not decide which checkpoint is "newer" based on the system time.
> The checkpoint ID is guaranteed to be strictly monotonously increasing. It is a better measure to decide which checkpoint is newer.
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