[ http://issues.apache.org/jira/browse/HADOOP-237?page=all ]
Milind Bhandarkar updated HADOOP-237:
-------------------------------------
Attachment: hadoop-metrics.patch
I have attached an updated metrics patch. I have addressed most concerns
expressed by Doug and David, except for removing duplicate code. Because the
alternative is an overkill. It would not allow localized code updates, compiler
cannot inline so increases overhead, because of multiple exit points in some
classes, it will leak metrics records and in any case the duplicate code is
small and in private classes (3-lines each in 6 classes). Please let me know if
you have any more concerns.
> Standard set of Performance Metrics for Hadoop
> ----------------------------------------------
>
> Key: HADOOP-237
> URL: http://issues.apache.org/jira/browse/HADOOP-237
> Project: Hadoop
> Type: Improvement
> Components: metrics
> Versions: 0.3.0
> Environment: All
> Reporter: Milind Bhandarkar
> Assignee: Milind Bhandarkar
> Attachments: hadoop-metrics.patch
>
> I am starting to use Hadoop's shiny new Metrics API to publish performance
> (and other) Metrics of running jobs and other daemons.
> Which performance metrics are people interested in seeing ? If possible,
> please group them according to modules, such as map-reduce, dfs,
> general-cluster-related etc. I will follow this process:
> 1. collect this list
> 2. assess feasibility of obtaining metric
> 3. assign context/record/metrics names
> 4. seek approval for names
> 5. instrument the code.
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