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https://issues.apache.org/jira/browse/HADOOP-12338?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14700799#comment-14700799
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Xianyin Xin commented on HADOOP-12338:
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We need the following indexes to be collected,
average,
standard deviation,
max,
min,
last value,
last num of samples,
num of samples,
moving average over a recent period of time.
The last needs the support of HADOOP-12335.
> Improvement on MutableStat
> --------------------------
>
> Key: HADOOP-12338
> URL: https://issues.apache.org/jira/browse/HADOOP-12338
> Project: Hadoop Common
> Issue Type: Improvement
> Components: metrics
> Reporter: Xianyin Xin
> Assignee: Xianyin Xin
>
> MutableStat gives some statistical info which can be captured by metrics
> system. Sometimes we also needs these statistical info in inner components of
> hadoop. It's convenient we add some getters to obtain these statistical infos.
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