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From "Akira AJISAKA (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-9913) Document time unit to RpcMetrics.java
Date Fri, 30 Aug 2013 00:17:51 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-9913?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Akira AJISAKA updated HADOOP-9913:
----------------------------------

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

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

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

  was:
In o.a.h.hdfs.server.namenode.metrics.NameNodeMetrics.java, metrics are declared as follows:

{code}
  @Metric("Duration in SafeMode at startup") MutableGaugeInt safeModeTime;
  @Metric("Time loading FS Image at startup") MutableGaugeInt fsImageLoadTime;
{code}

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

    
> Document time unit to RpcMetrics.java
> -------------------------------------
>
>                 Key: HADOOP-9913
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9913
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: documentation, metrics
>    Affects Versions: 3.0.0, 2.1.0-beta
>         Environment: trunk
>            Reporter: Akira AJISAKA
>            Assignee: Akira AJISAKA
>            Priority: Minor
>              Labels: newbie
>         Attachments: HADOOP-9913.2.patch, HADOOP-9913.patch
>
>
> In o.a.h.ipc.metrics.RpcMetrics.java, metrics are declared as follows:
> {code}
>    @Metric("Queue time") MutableRate rpcQueueTime;
>    @Metric("Processsing time") MutableRate rpcProcessingTime;
> {code}
> Since some users may confuse which unit (sec or msec) is correct, they should be documented.

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