[LUCENE-5634] Reuse TokenStream instances in Field

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.9, 6.0
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Michael McCandless
• Created: 30/Apr/14 21:58
• Updated: 28/Aug/22 14:06
• Resolved: 02/May/14 18:44

Description

If you don't reuse your Doc/Field instances (which is very expert: I
suspect few apps do) then there's a lot of garbage created to index each
StringField because we make a new StringTokenStream or
NumericTokenStream (and their Attributes).

We should be able to re-use these instances via a static
ThreadLocal...