To my knowledge, nobody's benchmarked this in a rigorous fashion. It's virtually certain, though, that on the same machine, NTFS would perform faster. HDFS does not directly write to the disk driver, it uses the local filesystem of the node on which it's installed. So any HDFS writes would themselves be channeled through NTFS and then down to the disk. The read path, of course, would go through NTFS first and then via HDFS out to the client.
So, HDFS can only add overhead. How much overhead is probably not a published number. - Aaron On Tue, Sep 22, 2009 at 7:25 AM, HarishKashyap TS < [email protected]> wrote: > Hi All, > > > > Has performance testing and comparison of HDFS *single node* cluster vs. > NTFS file systems been performed? Any sample results of HDFS single node vs. > NTFS performance comparison available? > > > > Your input/feedback regarding this would be very helpful. > > > > Regards, > > Harish Kashyap > > >
