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From "Jason (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3422) Ganglia counter metrics are all reported with the metric name "value", so the counter values can not be seen
Date Wed, 21 May 2008 14:19:55 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12598652#action_12598652
] 

Jason commented on HADOOP-3422:
-------------------------------

The names being produced for ganglia are long and tend to overflow the bounding box in the
graph.
mapred.job.FQCN.COUNTER_NAME
where FQCN is the fully qualified class that contains the counter ie: org.apache.hadoop.mapred.XXX.YYY

And it would be nice to get this from the individual machines as well as the cluster agreggate
so you could tell at a glance how the individual machines were doing. I suspect that will
be annother patch for that new feature.

> 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: 0.16.4
>            Reporter: Jason
>             Fix For: 0.18.0
>
>         Attachments: diff-20080520-1025.txt
>
>   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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