[HADOOP-13645] Refine TestRackResolver#testCaching to ensure cache is truly tested

• Type: Test
• Status: Resolved
• Priority: Minor
• Resolution: Not A Bug
• Affects Version/s: 2.7.3
• Component/s: util
• Assignee: Weiwei Yang
• Reporter: Weiwei Yang
• Created: 23/Sep/16 08:35
• Updated: 27/Sep/16 16:11
• Resolved: 27/Sep/16 16:11

Description

TestRackResolver#testCaching seems not cover the cache testing well, the test case won't fail even the cache wasn't used.