You are viewing a plain text version of this content. The canonical link for it is here.

Posted to common-dev@hadoop.apache.org by "Xianyin Xin (JIRA)" <ji...@apache.org> on 2015/08/18 05:50:45 UTC

[jira] [Created] (HADOOP-12335) Add exponential weighted moving average in metrics2.util

Xianyin Xin created HADOOP-12335:
------------------------------------

             Summary: 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


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)