[CASSANDRA-6993] Windows: remove mmap'ed I/O for index files and force standard file access

• Type: Improvement
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 2.1.3, 2.2.0 beta 1
• Component/s: Legacy/Local Write-Read Paths
• Labels: Windows
• Assignee: Joshua McKenzie
• Reporter: Joshua McKenzie

Authors

Joshua McKenzie

Reviewers

Benedict Elliott Smith

• Created: 07/Apr/14 22:26
• Updated: 16/Apr/19 09:31
• Resolved: 16/Dec/14 20:35

Description

Memory-mapped I/O on Windows causes issues with hard-links; we're unable to delete hard-links to open files with memory-mapped segments even using nio. We'll need to push for close to performance parity between mmap'ed I/O and buffered going forward as the buffered / compressed path offers other benefits.

Issue Links

• depends upon: CASSANDRA-8452 Add missing systems to FBUtilities.isUnix, add FBUtilities.isWindows