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https://issues.apache.org/jira/browse/HADOOP-9420?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Liang Xie updated HADOOP-9420:
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Attachment: HADOOP-9420.txt
Attached a minor patch, we should be able to get the 50/75/90/95/99th
percentile latency for rpc queue/processing time.
I didn't make a new test case for it, since it's really a small change, right?
:)
> 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: Andrew Wang
> Attachments: 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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