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https://issues.apache.org/jira/browse/HADOOP-15768?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yiqun Lin updated HADOOP-15768:
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Summary: Do not use Time#now to calculate the rpc process time duration
(was: Do not use Time#now to calculate the rpc queue time duration)
> Do not use Time#now to calculate the rpc process time duration
> --------------------------------------------------------------
>
> Key: HADOOP-15768
> URL: https://issues.apache.org/jira/browse/HADOOP-15768
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 3.1.1
> Reporter: Yiqun Lin
> Assignee: Ryan Wu
> Priority: Minor
>
> For the rpc queue time calculation, we are using a not-recommended way: Using
> {{Time#now}} to calculate for this.
> {code}
> // Invoke the protocol method
> long startTime = Time.now();
> int qTime = (int) (startTime-receivedTime);
> ....
> server.updateMetrics(detailedMetricsName, qTime, processingTime, false);
> {code}
> Actually we should use {{Time#monotonicNow()}} instead. This JIRA will fix
> these across RpcEngine impl classes.
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