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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 09:34:07 GMT

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

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

    Description: 
The property of dmax in ganglia is a configurable time to rotate metrics. Therefore no more
value of the metric will be emit to the gmond, after 'dmax' seconds, then gmond will destroy
the metric in memory. In hadoop metrics framework , the default value is 0, which means the
gmond will never destroy the metric although the metric is disappeared. The gmetad daemon
also does not delete the rrdtool file. 

We need to add a method to configure the default value of dmax for all metrics in hadoop.propertis.

  was: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 .  


> 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 is a configurable time to rotate metrics. Therefore no
more value of the metric will be emit to the gmond, after 'dmax' seconds, then gmond will
destroy the metric in memory. In hadoop metrics framework , the default value is 0, which
means the gmond will never destroy the metric although the metric is disappeared. The gmetad
daemon also does not delete the rrdtool file. 
> We need to add a method to configure the default value of dmax for all metrics in hadoop.propertis.



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