[jira] [Created] (FLINK-15914) Miss the barrier alignment metric for the case of two inputs

[Shang Yuanchun (Jira)]

zhijiang created FLINK-15914:
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             Summary: Miss the barrier alignment metric for the case of two inputs
                 Key: FLINK-15914
                 URL: https://issues.apache.org/jira/browse/FLINK-15914
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Checkpointing, Runtime / Metrics
            Reporter: zhijiang
            Assignee: zhijiang


When the StreamTwoInputSelectableProcessor was introduced before, it was missing to add the barrier alignment metric in the constructor. But it does not cause problems then, because only StreamTwoInputProcessor works at that time.

After StreamTwoInputProcessor is replaced by StreamTwoInputSelectableProcessor as now, this bug is exposed and we will not see the barrier alignment metric for the case of two inputs.

The solution is to add this metric while constructing the current StreamTwoInputProcessor.



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