[ http://issues.apache.org/jira/browse/HADOOP-132?page=all ]
David Bowen updated HADOOP-132:
-------------------------------
Attachment: metrics.patch
OK, here is an updated version of the patch with the code made uglier and less
robust so as to accommodate people who perversely insist on running with JDK
1.4. Also, I added a note to CHANGES.txt.
> An API for reporting performance metrics
> ----------------------------------------
>
> Key: HADOOP-132
> URL: http://issues.apache.org/jira/browse/HADOOP-132
> Project: Hadoop
> Type: New Feature
> Versions: 0.2
> Reporter: David Bowen
> Fix For: 0.2
> Attachments: javadoc.tgz, javadoc.tgz, metrics.patch, metrics.patch
>
> I'd like to propose adding an API for reporting performance metrics. I will
> post some javadoc as soon as I figure out how to do so. The idea is for the
> API to be sufficiently abstract that various different implementations can be
> plugged in. In particular, there would be one that just writes the metric
> data to a file, and another that sends metrics to Ganglia. It would also be
> possible to plug in an implementation that can support high-frequency (say,
> per-second) sending of fairly large amounts of data (up to hundreds of
> metrics) across the network.
> I'd be very interested in people's thoughts about what the requirements
> should be for such an API.
> - David Bowen
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