Non problematic data node results
18/05/30 12:36:08 INFO fs.TestDFSIO: ----- TestDFSIO ----- : write
18/05/30 12:36:08 INFO fs.TestDFSIO:            Date & time: Wed May 30 12:36:08 SAST 2018
18/05/30 12:36:08 INFO fs.TestDFSIO:        Number of files: 100
18/05/30 12:36:08 INFO fs.TestDFSIO: Total MBytes processed: 10000.0
18/05/30 12:36:08 INFO fs.TestDFSIO:      Throughput mb/sec: 6.301121788712044
18/05/30 12:36:08 INFO fs.TestDFSIO: Average IO rate mb/sec: 27.063095092773438
18/05/30 12:36:08 INFO fs.TestDFSIO:  IO rate std deviation: 41.048870659702715
18/05/30 12:36:08 INFO fs.TestDFSIO:     Test exec time sec: 956.025
18/05/30 12:36:08 INFO fs.TestDFSIO:

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Problematic data node results

18/05/30 13:47:09 INFO fs.TestDFSIO: ----- TestDFSIO ----- : write
18/05/30 13:47:09 INFO fs.TestDFSIO:            Date & time: Wed May 30 13:47:09 SAST 2018
18/05/30 13:47:09 INFO fs.TestDFSIO:        Number of files: 100
18/05/30 13:47:09 INFO fs.TestDFSIO: Total MBytes processed: 10000.0
18/05/30 13:47:09 INFO fs.TestDFSIO:      Throughput mb/sec: 5.155008528961611
18/05/30 13:47:09 INFO fs.TestDFSIO: Average IO rate mb/sec: 19.786481857299805
18/05/30 13:47:09 INFO fs.TestDFSIO:  IO rate std deviation: 35.024154875931636
18/05/30 13:47:09 INFO fs.TestDFSIO:     Test exec time sec: 741.584
18/05/30 13:47:09 INFO fs.TestDFSIO: