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https://issues.apache.org/jira/browse/FLINK-4923?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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zhuhaifeng updated FLINK-4923:
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Component/s: Metrics
> 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
> Components: Metrics
> 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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