[HBASE-9853] Edit the CP API: Make 'plugin's Interfaces for admending behaviors

• Type: Umbrella
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Component/s: Coprocessors
• Assignee: Unassigned
• Reporter: Michael Stack
• Created: 28/Oct/13 19:42
• Updated: 16/Jun/22 18:26
• Resolved: 11/Jun/22 20:22

Description

Current CP API has deviated from original intent allowing Observers observe (and on occasion amend data) and Endpoints for adding custom query handling over hbase data. CP API has evolved to include a raft of APIs that allow modifying base behaviors – how we do compactions, flushes, etc – that are not 'coprocessor'-type functions.

This issue came of devs discussing figuring how to stabilize the CP API. The thought is to return its scope to that of the original intent and to add new plugins Interfaces whereever we want to allow changing base behaviors (WAL writing, etc.).

This is an umbrellas issue. The redo would happen as subtasks.