[LUCENE-753] Use NIO positional read to avoid synchronization in FSIndexInput

• Type: New Feature
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Component/s: core/store
• Lucene Fields: New
• Assignee: Michael McCandless
• Reporter: Yonik Seeley
• Created: 19/Dec/06 18:18
• Updated: 28/Aug/22 11:33
• Resolved: 25/Jan/11 15:43

Description

As suggested by Doug, we could use NIO pread to avoid synchronization on the underlying file.
This could mitigate any MT performance drop caused by reducing the number of files in the index format.