[HDFS-4115] TestHDFSCLI.testAll fails one test due to number format

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.0-alpha
• Fix Version/s: 3.0.0-alpha1
• Component/s: test

Environment

Apache Maven 3.0.4
Maven home: /usr/share/maven
Java version: 1.6.0_35, vendor: Sun Microsystems Inc.
Java home: /usr/lib/jvm/j2sdk1.6-oracle/jre
Default locale: en_US, platform encoding: ISO-8859-1
OS name: "linux", version: "3.2.0-32-generic", arch: "amd64", family: "unix"

• Hadoop Flags: Reviewed
• Assignee: Trevor Robinson
• Reporter: Trevor Robinson
• Created: 26/Oct/12 16:32
• Updated: 12/May/16 18:12
• Resolved: 28/Oct/12 19:00

Description

This test fails repeatedly on only one of my machines:

Failed tests:   testAll(org.apache.hadoop.cli.TestHDFSCLI): One of the tests failed. See the Detailed results to identify the command that failed

           Test ID: [587]
  Test Description: [report: Displays the report about the Datanodes]
     Test Commands: [-fs hdfs://localhost:35254 -report]
        Comparator: [RegexpComparator]
Comparision result:   [fail]
   Expected output:   [Configured Capacity: [0-9]+ \([0-9]+\.[0-9]+ [BKMGT]+\)]
     Actual output:   [Configured Capacity: 472446337024 (440 GB)

The problem appears to be that StringUtils.byteDesc calls limitDecimalTo2 which calls DecimalFormat.format with a pattern of #.##. This pattern does not include trailing zeroes, so the expected regex is incorrect in requiring a decimal.