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https://issues.apache.org/jira/browse/FLINK-4923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15607947#comment-15607947
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ASF GitHub Bot commented on FLINK-4923:
---------------------------------------
Github user StephanEwen commented on a diff in the pull request:
https://github.com/apache/flink/pull/2693#discussion_r85079818
--- Diff:
flink-runtime/src/main/java/org/apache/flink/runtime/io/network/partition/ResultPartition.java
---
@@ -228,6 +232,23 @@ public long getTotalNumberOfBytes() {
return totalNumberOfBytes;
}
+ public int getNumberOfQueuedBuffers() {
+ int totalBuffers = 0;
+
+ for (ResultSubpartition subpartition : subpartitions) {
+
+ if (subpartition instanceof PipelinedSubpartition) {
--- End diff --
If you add the `getNumberOfQueuedBuffers()` method to `ResultSubpartition`
then you do not need to check and cast here.
> 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.numIn: received buffers of InputGates for a task
> 2. Buffers.numOut: 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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