[jira] [Created] (FLINK-19487) Checkpoint start delay is always zero for single channel tasks

[Shang Yuanchun (Jira)]

Piotr Nowojski created FLINK-19487:
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             Summary: Checkpoint start delay is always zero for single channel tasks
                 Key: FLINK-19487
                 URL: https://issues.apache.org/jira/browse/FLINK-19487
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Metrics
    Affects Versions: 1.11.2
            Reporter: Piotr Nowojski
            Assignee: Piotr Nowojski
             Fix For: 1.12.0


In {{CheckpointBarrierAligner}} we are marking start of the checkpoint only if the number of channels is more than 1. As a result of this, {{checkpointStartDelay}} is never updated.



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