Hi Brian, I wanted to test HDFS against several distributed filesystems.
Do you know any popular performance benchmarks that run with HDFS? Best Regards, Christian Am Dienstag, 6. Juli 2010 schrieb Allen Wittenauer: > > On Jul 6, 2010, at 11:56 AM, Brian Bockelman wrote: > > HDFS does not support the full set of POSIX semantics. I suspect bonnie++ > > is exercising things which HDFS doesn't support (such as writes to a file > > which is already closed or seeks during writes). > > > In fact, I think the last time this came up a year or two ago, the > stack trace showed that iozone was blowing up on a call to truncate(), which > is definitely not supported.
