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Profiling Hadoop jobs with Riemann
I’ve built a very simple distributed profiler for soft-real-time telemetry from hundreds to thousands of JVMs concurrently. It’s nowhere near as comprehensive in its analysis as, say, Yourkit, but it can tell you, across a distributed system, which functions are taking the most time, and what their dominant callers are.


Potentially useful.
riemann  profiling  aphyr  hadoop  emr  performance  monitoring 
august 2014 by jm
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