[HADOOP-602] Remove Lucene dependency

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.8.0
• Fix Version/s: 0.11.0
• Assignee: Milind Barve
• Reporter: Andrzej Bialecki
• Created: 13/Oct/06 10:30
• Updated: 03/Feb/07 03:23
• Resolved: 26/Jan/07 23:03

Description

Hadoop uses just a single class from Lucene, namely the PriorityQueue. I propose to remove this dependency by copying this class into org.apache.hadoop.util.PriorityQueue and removing lucene-core.jar from dependencies.

Removing this dependency makes it easier to run map-reduce applications that use different versions of Lucene.