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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-12253) CLONE - Pretty-format the output for DFSIO
Date Sun, 27 Aug 2017 17:27:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-12253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Allen Wittenauer resolved HDFS-12253.
-------------------------------------
       Resolution: Duplicate
    Fix Version/s:     (was: 3.0.0-alpha1)
                       (was: 2.8.0)

> CLONE - Pretty-format the output for DFSIO
> ------------------------------------------
>
>                 Key: HDFS-12253
>                 URL: https://issues.apache.org/jira/browse/HDFS-12253
>             Project: Hadoop HDFS
>          Issue Type: Test
>            Reporter: Dennis Huo
>            Assignee: Kai Zheng
>
> 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*.
> {noformat}
> 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: 
> {noformat}



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