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From Ivan Mitic <iva...@microsoft.com>
Subject RE: How to test the performance of NN?
Date Wed, 05 Jun 2013 22:32:03 GMT
Hi Mark,

NNBench is a namenode load test. Output of the test is the set of performance numbers, like
transactions per second, average latency of operations, etc.

What do you mean by trying to create a more efficient namenode? What dimension are you trying
to optimize? Depending on this, people on this list might be able to guide you to something
more appropriate.

Hope this helps,

From: Mark Kerzner [mailto:mark.kerzner@shmsoft.com]
Sent: Wednesday, June 05, 2013 3:17 PM
To: Hadoop User
Subject: How to test the performance of NN?


I am trying to create a more efficient namenode, and for that I need to the standard distribution,
and then compare it to my version.

Which benchmark should I run? I am doing nnbench, but it is not telling me anything about
performance, only about potential failures.

Thank you.

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