[HDFS-6613] Improve logging in caching classes

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.4.1
• Fix Version/s: 2.6.0
• Component/s: caching
• Target Version/s: 2.6.0
• Assignee: Andrew Wang
• Reporter: Andrew Wang
• Created: 01/Jul/14 00:34
• Updated: 01/Dec/14 03:08
• Resolved: 03/Jul/14 17:14

Description

Some of the log prints in the caching classes are incorrect or confusing, could use some improvement.

Also adding some trace logging to help debug intermittent TestCacheDirectives failures, since I can't repro it locally.