[MAPREDUCE-6896] Document wrong spelling in usage of MapredTestDriver tools.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha3
• Fix Version/s: 3.0.0-alpha4, 2.10.0
• Component/s: documentation
• Labels: easyfix
• Target Version/s: 3.0.0-alpha4
• Hadoop Flags: Reviewed
• Flags: Patch
• Assignee: LiXin Ge
• Reporter: LiXin Ge
• Created: 07/Jun/17 07:55
• Updated: 04/Oct/18 01:14
• Resolved: 13/Jun/17 20:24

Description

When the user run performance test of MapredTestDriver, a spelling mistake seems exposed to user:

./hadoop org.apache.hadoop.test.MapredTestDriver
An example program must be given as the first argument.
Valid program names are:
......
timelineperformance: A job that launches mappers to test timline service performance.