[HDFS-8902] Uses ByteBuffer on heap or direct ByteBuffer according to used erasure coder in striping read (position and stateful)

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Assignee: Kai Zheng
• Reporter: Kai Zheng
• Created: 17/Aug/15 13:31
• Updated: 04/Dec/15 08:24
• Resolved: 04/Dec/15 08:23

Description

We would choose ByteBuffer on heap or direct ByteBuffer according to used erasure coder in striping read (position and stateful), for performance consideration. Pure Java implemented coder favors on heap one, though native coder likes more direct one, avoiding data copy.

Issue Links

• Is contained by: HDFS-8668 Erasure Coding: revisit buffer used for encoding and decoding.