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https://issues.apache.org/jira/browse/HADOOP-9420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13867337#comment-13867337
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Hudson commented on HADOOP-9420:
--------------------------------
SUCCESS: Integrated in Hadoop-trunk-Commit #4981 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/4981/])
HADOOP-9420. Add percentile or max metric for rpcQueueTime, processing time.
Contributed by Liang Xie. (wang:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1556983)
* /hadoop/common/trunk/hadoop-common-project/hadoop-common/CHANGES.txt
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/CommonConfigurationKeys.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/Server.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/ipc/metrics/RpcMetrics.java
*
/hadoop/common/trunk/hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/ipc/TestRPC.java
> Add percentile or max metric for rpcQueueTime, processing time
> --------------------------------------------------------------
>
> Key: HADOOP-9420
> URL: https://issues.apache.org/jira/browse/HADOOP-9420
> Project: Hadoop Common
> Issue Type: Bug
> Components: ipc, metrics
> Affects Versions: 2.0.3-alpha
> Reporter: Todd Lipcon
> Assignee: Liang Xie
> Fix For: 2.4.0
>
> Attachments: HADOOP-9420-v2.txt, HADOOP-9420.txt
>
>
> Currently, we only export averages for rpcQueueTime and rpcProcessingTime.
> These metrics are most useful when looking at timeouts and slow responses,
> which in my experience are often caused by momentary spikes in load, which
> won't show up in averages over the 15+ second time intervals often used by
> metrics systems. We should collect at least the max queuetime and processing
> time over each interval, or the percentiles if it's not too expensive.
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