Hi Darin, > I often see my checkpoints contain "Processed (persisted) in-flight data". The values outside the parentheses represent Processed in-flight data[1], and the values inside the parentheses represent persisted in-flight data[1] , what kind of case did you see in your WEB UI？If the >0 values are outside the parentheses, I think it represents Processed in-flight data.
> Is it possible there is some configuration I could be missing? I have not explicitly disabled unaligned checkpoints but perhaps I should? You can see whether unaligned checkpoints are enabled by configuration-tab [2]. [1] https://nightlies.apache.org/flink/flink-docs-release-1.13/docs/ops/monitoring/checkpoint_monitoring/#history-tab [2] https://nightlies.apache.org/flink/flink-docs-release-1.13/docs/ops/monitoring/checkpoint_monitoring/#configuration-tab Best, Yanfei Darin Amos via user <user@flink.apache.org> 于2022年8月23日周二 07:02写道： > Hi All! > > I am running Flink 1.13.1 and I have unaligned checkpoints disabled, > however I often see my checkpoints contain "Processed (persisted) > in-flight data". According to the Flink documentation, it states: > > - *Persisted in-flight data: The number of bytes persisted during the > alignment (time between receiving the first and the last checkpoint > barrier) over all acknowledged subtasks. This is > 0 only if the unaligned > checkpoints are enabled.* > > I'm happy to share screenshots of my Checkpoint configuration and history > tabs if needed. Colleagues of mine running 1.14.X have also observed the > same behavior. Is it possible there is some configuration I could be > missing? I have not explicitly disabled unaligned checkpoints but perhaps I > should? I wonder if there might be some kind of bug where the UI is showing > unaligned checkpoints, but the behaviour is not honoring that config. > > Thanks! > > Darin >
