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