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https://issues.apache.org/jira/browse/FLINK-4923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15611358#comment-15611358
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ASF GitHub Bot commented on FLINK-4923:
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Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/2693
This looks good, thanks!
Merging this...
> Expose input/output buffers and bufferPool 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
> Assignee: zhuhaifeng
> Priority: Minor
> Fix For: 1.2.0
>
>
> We should expose the following Metrics on the TaskIOMetricGroup:
> 1. Buffers.inputQueueLength: received buffers of InputGates for a task
> 2. Buffers.outputQueueLength: buffers of produced ResultPartitions for a task
> 3. Buffers.inPoolUsage: usage of InputGates buffer pool for a task
> 4. Buffers.outPoolUsage: usage of produced ResultPartitions buffer pool for
> a task
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