FAQ
Hi all,

I wanted to use an IO benchmark that reads/writes Data from/into the HDFS
using MapReduce. TestDFSIO. I thought, does this. But what I understand is
that TestDFSIO merely creates the files in a temp folder in the local
filesystem of the TaskTracker nodes. Is this correct? How can such an
approach test the IOPs given by a IO intensive MapReduce workload ?

Matthew

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postedJun 2, '11 at 4:08a
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