hadoop-common-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Xianyin Xin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-12335) Add exponential weighted moving average in metrics2.util
Date Tue, 18 Aug 2015 03:53:45 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-12335?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Xianyin Xin updated HADOOP-12335:
---------------------------------
    Attachment: ewma-preview.patch

A preview patch submitted.

> Add exponential weighted moving average in metrics2.util
> --------------------------------------------------------
>
>                 Key: HADOOP-12335
>                 URL: https://issues.apache.org/jira/browse/HADOOP-12335
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: metrics
>            Reporter: Xianyin Xin
>            Assignee: Xianyin Xin
>         Attachments: ewma-preview.patch
>
>
> Sometimes we need to collect the average value of a variable, but for variables that
is time related, the more recent value is more important. For example, we want to see the
average container allocation rate in the last 5 min. Exponential weighted moving average is
a solution for this scenario.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message