zhuhaifeng created FLINK-4923:
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Summary: Expose input/output queued buffers and buffer usage as a
metric for a Task
Key: FLINK-4923
URL: https://issues.apache.org/jira/browse/FLINK-4923
Project: Flink
Issue Type: Improvement
Reporter: zhuhaifeng
Priority: Minor
Fix For: 1.2.0
We should expose the following Metrics on the TaskIOMetricGroup:
1. numInputQueuedBuffers: received buffers of InputGates for a task
2. numOutputQueuedBuffers: buffers of produced ResultPartitions for a task
3. InputQueueUsage: usage of InputGates buffer pool for a task
4. OutputQueueUsage: usage of produced ResultPartitions buffer pool for a task
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