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From "stack (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 Sat, 11 Oct 2008 04:38:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3422?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12638717#action_12638717
] 

stack commented on HADOOP-3422:
-------------------------------

Good stuff Brian.

1).  Just by way of FYI, see MetricsUtil in same package for how to add logging.  Import two
classes, then just inside your class opening, add something like:

{code}
  private static final Log LOG =
    LogFactory.getLog("org.apache.hadoop.util.GangliaContext");
{code}

In code, do something like this:  LOG.warn("Type is null"); ... and so on.

2). Let me write Jason and see what he was up to with the ThreadLocal.  I don't understand.
 Its not keeping any state so why bother with it.
3). Doesn't your patch also address HADOOP-4137 whereas diff-20080520-1025.txt does not?


> 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: 0.18.1
>            Reporter: Jason
>         Attachments: diff-20080520-1025.txt, ganglia-patch-3422-and-4137.patch, ganglia-patch-3422-and-4137.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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