[OAK-4923] Improve segment deserialization performance

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Segment Tar 0.0.16
• Component/s: segment-tar
• Assignee: Michael Dürig
• Reporter: Francesco Mari
• Created: 11/Oct/16 12:17
• Updated: 19/Oct/16 08:47
• Resolved: 19/Oct/16 08:39

Description

The methods readReferencedSegments and readRecordNumberOffsets in Segment compute the returned data every time they are called. While this is a very clean implementation, this might force unexpected I/O operations, since the "buffer" the data is read from usually is a memory-mapped file.