[jira] [Created] (HADOOP-10161) In the hadoop metrics framework, the property of dmax in the ganglia configuration is the metrics dead time when the gmond destroy the metric in memery,The default value of it is 0, which means gmond process will never delete this metirc.

[Yang He (JIRA)]

Yang He created HADOOP-10161:
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             Summary: In the hadoop metrics framework, the property of dmax  in 
the ganglia configuration is the metrics dead time  when the gmond destroy the 
metric in memery,The default value of it is 0, which means gmond process will 
never delete this metirc.
                 Key: HADOOP-10161
                 URL: https://issues.apache.org/jira/browse/HADOOP-10161
             Project: Hadoop Common
          Issue Type: Improvement
          Components: fs
            Reporter: Yang He
            Priority: Minor


The property of dmax 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 . 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. 



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