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Posted to issues@flink.apache.org by "Piotr Nowojski (JIRA)" <ji...@apache.org> on 2019/05/21 13:20:00 UTC
[jira] [Created] (FLINK-12576) inputQueueLength metric does not
work for LocalInputChannels
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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