[YARN-6094] Update the coprocessor to be a dynamically loaded one

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.9.0, YARN-5355, 3.0.0-beta1
• Component/s: timelineserver
• Labels: atsv2-hbase yarn-5355-merge-blocker
• Hadoop Flags: Reviewed
• Assignee: Vrushali C
• Reporter: Vrushali C
• Created: 13/Jan/17 20:37
• Updated: 21/Oct/17 06:05
• Resolved: 19/Jan/17 23:06

Description

The timeline service v2 code base on yarn now uses hbase 1.2.4 after YARN-5976.

With this version of hbase, system classes (starting with org.apache.hadoop) can be loaded as table level coprocessors. Hence we should update the timeline service coprocessor to be a dynamically loaded one instead of static loading.

This involves code changes as well as documentation updates for deployment.