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  1. Hadoop HDFS
  2. HDFS-9153

Pretty-format the output for DFSIO

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    Details

    • Type: Test
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.8.0, 2.9.0, 3.0.0-alpha1, 2.7.5
    • Component/s: None
    • Labels:
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    • Hadoop Flags:
      Reviewed

      Description

      Ref. the following DFSIO output, I was surprised the test throughput was only 17 MB/s, which doesn't make sense for a real cluster. Maybe it's used for other purpose? For users, it may make more sense to give the throughput 1610 MB/s (1228800/763), calculated by Total MBytes processed / Test exec time.

      15/09/28 11:42:23 INFO fs.TestDFSIO: ----- TestDFSIO ----- : write
      15/09/28 11:42:23 INFO fs.TestDFSIO:            Date & time: Mon Sep 28 11:42:23 CST 2015
      15/09/28 11:42:23 INFO fs.TestDFSIO:        Number of files: 100
      15/09/28 11:42:23 INFO fs.TestDFSIO: Total MBytes processed: 1228800.0
      15/09/28 11:42:23 INFO fs.TestDFSIO:      Throughput mb/sec: 17.457387239456878
      15/09/28 11:42:23 INFO fs.TestDFSIO: Average IO rate mb/sec: 17.57563018798828
      15/09/28 11:42:23 INFO fs.TestDFSIO:  IO rate std deviation: 1.7076328985378455
      15/09/28 11:42:23 INFO fs.TestDFSIO:     Test exec time sec: 762.697
      15/09/28 11:42:23 INFO fs.TestDFSIO: 
      

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