[MAPREDUCE-5281] Mapreduce API: Counter changes from non-abstract class to interface

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Won't Fix
• Target Version/s: 2.1.0-beta
• Assignee: Zhijie Shen
• Reporter: Zhijie Shen
• Created: 29/May/13 18:30
• Updated: 03/Jun/13 22:44
• Resolved: 03/Jun/13 22:44

Description

Therefore, significant changes in Counter:

1. Two Constructors are removed;
2. Following methods are removed:

• boolean equals(Object)
• int hashCode()
• void readFields(DataInput)
• void write(DataOutput)

Fix of this issue may break 0.23.