[HADOOP-11798] Native raw erasure coder in XOR codes

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: HDFS-7285, 3.0.0-alpha2
• Component/s: io
• Labels: hdfs-ec-3.0-must-do
• Hadoop Flags: Reviewed
• Release Note: This provides a native implementation of XOR codec by leveraging Intel ISA-L library function to achieve a better performance.
• Assignee: Sammi Chen
• Reporter: Kai Zheng
• Created: 03/Apr/15 10:35
• Updated: 02/Oct/19 17:13
• Resolved: 25/Oct/16 23:59

Description

Raw XOR coder is utilized in Reed-Solomon erasure coder in an optimization to recover only one erased block which is in most often case. It can also be used in HitchHiker coder. Therefore a native implementation of it would be deserved for performance gain.