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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HADOOP-3422) Ganglia counter metrics are all reported with the metric name "value", so the counter values can not be seen
Date Fri, 21 Nov 2008 19:07:44 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-3422?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

stack updated HADOOP-3422:
--------------------------

    Attachment: ganglia-patch-3422-updated-v2.patch

Version of patch that addresses the above comments (Uses StringBuilder instead of StringBuffer,
removes extraneous setLength(0), etc.).  Also adds overload of JVMMetrics#init method so can
pass name of record to use.  Default is to use the old 'metrics' name.  Overload makes it
so can pass in alternate record name.  This makes it so can have metrics per jvm rather than
have all jvm metrics lumped together.   For example, in hbase, we can now have graphs for
both the master and regionserver's jvms show in ganglia.  Doing similar for rpc didn't make
as much sense since method names are shown (and override of RpcMetrics creation is not possible
currently).

> Ganglia counter metrics are all reported with the metric name "value", so the counter
values can not be seen
> ------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-3422
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3422
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: metrics
>    Affects Versions: 0.17.2, 0.18.0, 0.18.1, 0.18.2
>            Reporter: Jason
>             Fix For: hudson, 0.19.1, 0.20.0
>
>         Attachments: diff-20080520-1025.txt, ganglia-patch-3422-and-4137.patch, ganglia-patch-3422-and-4137.patch,
ganglia-patch-3422-qand-4137-1.patch, ganglia-patch-3422-updated-v2.patch, ganglia-patch-3422-updated.patch
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> The JobInProgress class reports all metrics with the name "value". The FileMetrics class
puts all of the tags into the name when reporting the individual values, but the Ganglia Context
does not put the tags into the name..
> This patch modifies the context to build names for the counter metrics out of the tag
values. This enables the user to see the indivdual counter values with the ganglia web tool,
on a per job basis

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