[HBASE-12389] Reduce the number of versions configured for the ACL table

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.98.8, 0.99.2
• Component/s: security
• Hadoop Flags: Reviewed

Release Note

This change reduces the number of versions kept in the ACL table from 10 to 1. This is a fully compatible change. Existing ACL tables will not be affected, only newly initialized ones. Furthermore, old versions of ACL table entries were never considered by the AccessController in decision making, and any and all entries in the ACL table are not user accessible.

• Assignee: Andrew Kyle Purtell
• Reporter: Andrew Kyle Purtell
• Created: 30/Oct/14 22:15
• Updated: 06/Apr/18 17:54
• Resolved: 05/Nov/14 17:41

Description

We recently reduced the number of versions kept for entries in META from 10 to 3. This same arbitrary constant was used for the ACL table definition in AccessControlLists. We should change this to 3 also, or even 1.