[jira] [Commented] (HADOOP-17805) IOStatistisSource to add new adder methods

["Ayush Saxena (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HADOOP-17805?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17381490#comment-17381490 ] 

Ayush Saxena commented on HADOOP-17805:
---------------------------------------

Is the plan to store values and generate overall statistics?

Give a check if you can use \{{org.apache.commons.math3.stat.descriptive.DescriptiveStatistics}} or \{{org.apache.commons.math3.stat.descriptive.SummaryStatistics}} or someone from the family

> IOStatistisSource to add new adder methods
> ------------------------------------------
>
>                 Key: HADOOP-17805
>                 URL: https://issues.apache.org/jira/browse/HADOOP-17805
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs
>    Affects Versions: 3.3.1
>            Reporter: Steve Loughran
>            Priority: Minor
>
> Based on experience of Manifest committer of MAPREDUCE-7341:
> * operation to take a key and a count and a mean entry, min, max and count:
> addStatsSample(String key, long count)
> * operation to add a mean and sample count to a mean value.



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