[LUCENE-4538] Cache DocValues DirecSource

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0
• Fix Version/s: 4.1, 6.0
• Component/s: core/codecs
• Lucene Fields: New, Patch Available
• Assignee: Simon Willnauer
• Reporter: Simon Willnauer
• Created: 05/Nov/12 12:14
• Updated: 28/Aug/22 13:31
• Resolved: 06/Nov/12 15:02

Description

Currently the user need to make sure that a direct source is not shared between threads and each time someone calls getDirectSource we create a new source which has a reasonable overhead. We can certainly reduce the overhead (maybe different issue) but it should be easier for the user to get a direct source and handle it. More than that is should be consistent with getSource / loadSource.