[LUCENE-8865] Use incoming thread for execution if IndexSearcher has an executor

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: master (9.0), 8.2
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: Simon Willnauer
• Created: 17/Jun/19 16:06
• Updated: 26/Jul/19 08:54
• Resolved: 18/Jun/19 12:58

Description

Today we don't utilize the incoming thread for a search when IndexSearcher
has an executor. This thread is only idleing but can be used to execute a search
once all other collectors are dispatched.

Issue Links

• links to: GitHub Pull Request #725
• links to: GitHub Pull Request #731