[PIG-2882] Use Deque instead of Stack

• Type: Improvement
• Status: Closed
• Priority: Trivial
• Resolution: Fixed
• Affects Version/s: 0.10.0
• Fix Version/s: 0.11
• Component/s: impl
• Labels: newbie patch
• Patch Info: Patch Available
• Assignee: Mairbek Khadikov
• Reporter: Mairbek Khadikov
• Created: 17/Aug/12 23:37
• Updated: 22/Feb/13 04:53
• Resolved: 02/Sep/12 23:24

Description

There are places where java.util.Stack is used.

Replace it with java.util.Deque because it java.util.Stack is a legacy class and extends java.util.Vector which is synchronized and slow.

Quote from the java.util.Deque javadoc:

>Deques can also be used as LIFO (Last-In-First-Out) stacks. This interface should be used in preference to the legacy Stack class.