[HADOOP-9913] Document time unit to RpcMetrics.java

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Duplicate
• Affects Version/s: 2.1.0-beta, 3.0.0-alpha1
• Component/s: documentation, metrics
• Labels: newbie

Environment

trunk

• Target Version/s: 2.6.0
• Assignee: Unassigned
• Reporter: Akira Ajisaka
• Created: 28/Aug/13 21:42
• Updated: 12/May/16 18:24
• Resolved: 19/Aug/14 07:31

Description

In o.a.h.ipc.metrics.RpcMetrics.java, metrics are declared as follows:

   @Metric("Queue time") MutableRate rpcQueueTime;
   @Metric("Processsing time") MutableRate rpcProcessingTime;

Since some users may confuse which unit (sec or msec) is correct, they should be documented.

Issue Links

• duplicates: HADOOP-6350 Documenting Hadoop metrics
• relates to: HDFS-5144 Document time unit to NameNodeMetrics.java