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From "Yang He (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-10161) 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.
Date Mon, 16 Dec 2013 01:59:07 GMT

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

Yang He updated HADOOP-10161:
-----------------------------

    Description: 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 .    (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' times ,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 .  )

> 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.
> ---------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-10161
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10161
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: fs
>    Affects Versions: 2.2.0
>            Reporter: Yang He
>            Priority: Minor
>         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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