Akira AJISAKA created HADOOP-9913:
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Summary: 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: 2.1.0-beta, 3.0.0
Environment: trunk
Reporter: Akira AJISAKA
Assignee: Akira AJISAKA
Priority: Minor
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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