Hello, I run hadoop jar hadoop-0.20.2-test.jar TestDFSIO -write -nrFiles 1000 -fileSize 128, because wanted to know what is the througput of my cluster (how many data per sec its able to write).
Here are results, that doesnt have any "meaning" for my point of view. 11/05/03 16:21:46 INFO mapred.FileInputFormat: Throughput mb/sec: 23.875848571907156 11/05/03 16:21:46 INFO mapred.FileInputFormat: Average IO rate mb/sec: 25.087316513061523 The througput mb/s suppose to be: total MB written / total time. Apparently not? Or its for one node or what does it mean? During the test i was monitoring all nodes disk and there was stale write traffic of 120MB/s. Thanks Best P
