[HADOOP-15768] Do not use Time#now to calculate the rpc process time duration

• Type: Bug
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 3.1.1
• Target Version/s: 3.5.0
• Assignee: Ryan Wu
• Reporter: Yiqun Lin
• Created: 18/Sep/18 09:51
• Updated: 04/Jan/24 12:32

Description

For the rpc process time calculation, we are using a not-recommended way: Using Time#now to calculate for this.

        // Invoke the protocol method
        long startTime = Time.now();
        int qTime = (int) (startTime-receivedTime);
....
          int processingTime = (int) (Time.now() - startTime);
...
server.updateMetrics(detailedMetricsName, qTime, processingTime, false);

 

Actually we should use Time#monotonicNow() instead. This JIRA will fix these across RpcEngine impl classes.