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https://issues.apache.org/jira/browse/HADOOP-9913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13754199#comment-13754199
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Akira AJISAKA commented on HADOOP-9913:
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[~ozawa], thanks for your comment.
{quote}
Can you understand what "Queue time" stands for? If your answer is positive,
it's OK. However, IMHO, "Time in server side queue" is more appropriate
expression.
{quote}
I understand. I'll fix the patch to make more appropriate expression.
{quote}
The patch against hadoop-common-project and hadoop-hdfs-project can be split.
{quote}
Thanks. I'll split the patch and make another issue for NameNodeMetrics on HDFS
project.
> Document time unit to metrics
> -----------------------------
>
> 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.patch
>
>
> For example, 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.
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