HADOOP中HDFS基准测试

hdfs 基准测试：

磁盘读写性能测试

hadoop jar ./hadoop-mapreduce-client-jobclient-2.7.2.3.jar TestDFSIO -read -nrFiles 10 -fileSize 10MB
hadoop jar ./hadoop-mapreduce-client-jobclient-2.7.2.3.jar TestDFSIO -write -nrFiles 10 -fileSize 10MB

• dev环境：
  read:

  19/06/28 08:14:45 INFO fs.TestDFSIO: ----- TestDFSIO ----- : read
  19/06/28 08:14:45 INFO fs.TestDFSIO:            Date & time: Fri Jun 28 08:14:45 CST 2019
  19/06/28 08:14:45 INFO fs.TestDFSIO:        Number of files: 10
  19/06/28 08:14:45 INFO fs.TestDFSIO: Total MBytes processed: 100.0
  19/06/28 08:14:45 INFO fs.TestDFSIO:      Throughput mb/sec: 1369.86301369863
  19/06/28 08:14:45 INFO fs.TestDFSIO: Average IO rate mb/sec: 1448.015869140625
  19/06/28 08:14:45 INFO fs.TestDFSIO:  IO rate std deviation: 313.0168409477681
  19/06/28 08:14:45 INFO fs.TestDFSIO:     Test exec time sec: 1.444

write:

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19/06/28 08:17:58 INFO fs.TestDFSIO: ----- TestDFSIO ----- : write
19/06/28 08:17:58 INFO fs.TestDFSIO:            Date & time: Fri Jun 28 08:17:58 CST 2019
19/06/28 08:17:58 INFO fs.TestDFSIO:        Number of files: 10
19/06/28 08:17:58 INFO fs.TestDFSIO: Total MBytes processed: 100.0
19/06/28 08:17:58 INFO fs.TestDFSIO:      Throughput mb/sec: 94.2507068803016
19/06/28 08:17:58 INFO fs.TestDFSIO: Average IO rate mb/sec: 94.32148742675781
19/06/28 08:17:58 INFO fs.TestDFSIO:  IO rate std deviation: 2.5780734529814877
19/06/28 08:17:58 INFO fs.TestDFSIO:     Test exec time sec: 2.482
19/06/28 08:17:58 INFO fs.TestDFSIO: 

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