[HDFS-12303] Change default EC cell size to 1MB for better performance

• Type: Improvement
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 3.0.0-beta1
• Labels: hdfs-ec-3.0-must-do
• Target Version/s: 3.0.0-beta1
• Hadoop Flags: Incompatible change
• Release Note: The cell size of the provided HDFS erasure coding policies has been changed from 64k to 1024k for better performance. The policy names have all been changed accordingly, i.e. RS-6-3.1024k.
• Assignee: Wei Zhou
• Reporter: Wei Zhou
• Created: 15/Aug/17 05:47
• Updated: 11/Sep/17 21:13
• Resolved: 25/Aug/17 21:14

Description

As discussed in HDFS-11814, 1MB cell size shows better performance than others during the tests.