[HBASE-16612] Use array to cache Types for KeyValue.Type.codeToType

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.1.6, 1.2.3, 0.98.22
• Fix Version/s: 1.4.0, 2.0.0
• Hadoop Flags: Reviewed
• Assignee: Phil Yang
• Reporter: Phil Yang
• Created: 12/Sep/16 06:53
• Updated: 14/Sep/16 03:55
• Resolved: 13/Sep/16 19:45

Description

We don't rely on enum ordinals in KeyValye.Type. We have own code in it. In codeToType, we use a loop to find the Type which is not a good idea. We can just use an arryay[256] to cache all types.