[SOLR-4965] avoid commit creating new segments file if no changes

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 4.4, 6.0
• Assignee: Unassigned
• Reporter: Yonik Seeley
• Created: 26/Jun/13 18:22
• Updated: 09/May/16 18:52
• Resolved: 26/Jun/13 20:47

Description

We could use LUCENE-5079 to avoid calling commit if there are no changes (and the act of setting commit user data causes changes, so IW.commit can't short-circuit for us as it used to do).