[LUCENE-9601] Why not use HardLink in indexWriter.addIndexes

• Type: New Feature
• Status: Resolved
• Priority: Minor
• Resolution: Not A Problem
• Affects Version/s: 8.6.3
• Component/s: core/index
• Lucene Fields: New
• Assignee: Unassigned
• Reporter: zhangchao.es
• Created: 09/Nov/20 02:24
• Updated: 28/Aug/22 16:10
• Resolved: 09/Nov/20 03:17

Description

when we addIndexes from dirs,it use copySegmentAsIs to copy segment files to dest dir,that 

requires 2x temporary free space and more io operations.Can hard links be used instead of copying files？