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HDFS >> mail # dev >> ioreply


Here is an interesting idea: recording traces of the filesystem
operations applications do, and allowing these traces to be replayed
later.

> ioreplay is mainly intended for replaying of recorded (using strace) IO traces, which is useful for standalone
> benchmarking. It provides many features to ensure validity of such measurements.

http://code.google.com/p/ioapps/

Sounds like something we should consider doing for HDFS performance testing...

regards,
Colin