[YARN-5239] Eliminate unused imports checkstyle warnings

• Type: Sub-task
• Status: Resolved
• Priority: Trivial
• Resolution: Won't Fix
• Affects Version/s: YARN-2928
• Component/s: timelineserver
• Labels: yarn-2928-1st-milestone
• Assignee: Joep Rottinghuis
• Reporter: Joep Rottinghuis
• Created: 11/Jun/16 01:19
• Updated: 13/Jun/16 17:01
• Resolved: 13/Jun/16 17:01

Description

There are ~8 existing checkstyle issues generated due to unused imports.
By fully qualifying the classes in javadoc and manually wrapping the javadoc under 80 characters we can eliminate these warnings.
This will help with the eventual merge because then we introduce 8 fewer checkstyle warnings.

The only checkstyle warnings left are now too many arguments, which cannot be easily refactored w/o changing code structure.