[DRILL-6002] Avoid memory copy from direct buffer to heap while spilling to local disk

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.13.0
• Labels: ready-to-commit
• Assignee: Vlad Rozov
• Reporter: Vlad Rozov
• Reviewer: Paul Rogers
• Created: 29/Nov/17 23:09
• Updated: 25/Jan/18 01:48
• Resolved: 25/Jan/18 01:48

Description

When spilling to a local disk or to any file system that supports WritableByteChannel it is preferable to avoid copy from off-heap to java heap as WritableByteChannel can work directly with the off-heap memory.

Issue Links

• links to: GitHub Pull Request #1058