[jira] [Created] (FLINK-12576) inputQueueLength metric does not work for LocalInputChannels

[Shang Yuanchun (Jira)]

Piotr Nowojski created FLINK-12576:
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             Summary: inputQueueLength metric does not work for LocalInputChannels
                 Key: FLINK-12576
                 URL: https://issues.apache.org/jira/browse/FLINK-12576
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Metrics
    Affects Versions: 1.8.0, 1.7.2, 1.6.4
            Reporter: Piotr Nowojski


Currently {{inputQueueLength}} ignores LocalInputChannels ({{SingleInputGate#getNumberOfQueuedBuffers}}). This can can cause mistakes when looking for causes of back pressure (If task is back pressuring whole Flink job, but there is a data skew and only local input channels are being used).



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