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From "Tsuyoshi OZAWA (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-10161) Add a method to change the default value of dmax in hadoop.properties
Date Mon, 16 Dec 2013 09:28:08 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-10161?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Tsuyoshi OZAWA updated HADOOP-10161:
------------------------------------

    Summary: Add a method to change the default value of dmax in hadoop.properties  (was:
In the hadoop metrics framework,The default value of dmax is 0, which means gmond process
will never delete this metirc although it is disappeared.)

> Add a method to change the default value of dmax in hadoop.properties
> ---------------------------------------------------------------------
>
>                 Key: HADOOP-10161
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10161
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: metrics
>    Affects Versions: 2.2.0
>            Reporter: Yang He
>         Attachments: HADOOP-10161_0_20131211.patch, hadoop-metrics.properties, hadoop-metrics2.properties
>
>
> The property of dmax in ganglia configration is  metric dead time , when one  metrics
is disappeared ,so no more value of the metric will be emtic to the gmond,after 'dmax' seconds,then
 gmond will destroy the metric in memery . in hadoop metrics framework ,the default value
is 0,which means the gmond will never destroy the  metric althought the metric is disappeared
,the gmetad daemon also does not delete the rrdtool file ,and  there does not have  a method
to configure the defualt value of  dmax for all metrics .  



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