[HDFS-9153] Pretty-format the output for DFSIO

• Type: Test
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8.0, 2.9.0, 3.0.0-alpha1, 2.7.5
• Hadoop Flags: Reviewed
• Assignee: Kai Zheng
• Reporter: Kai Zheng
• Created: 28/Sep/15 07:21
• Updated: 30/Aug/17 22:16
• Resolved: 23/Nov/15 00:20

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: 

Issue Links

• is cloned by: HDFS-12253 CLONE - Pretty-format the output for DFSIO