Github user zentol commented on a diff in the pull request: https://github.com/apache/flink/pull/2693#discussion_r85304524 --- Diff: flink-runtime/src/main/java/org/apache/flink/runtime/taskmanager/Task.java --- @@ -347,6 +348,12 @@ public Task( // finally, create the executing thread, but do not start it executingThread = new Thread(TASK_THREADS_GROUP, this, taskNameWithSubtask); + + // add metrics for buffers + this.metrics.getIOMetricGroup().getBuffersGroup().gauge("inputQueueLength", new TaskIOMetricGroup.InputBuffersGauge(this)); --- End diff -- we could have a static iniitializer method in the TaskIOMetricGroup for this.
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