[HDFS-8801] Convert BlockInfoUnderConstruction as a feature

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: namenode
• Target Version/s: 2.8.0
• Hadoop Flags: Reviewed
• Assignee: Jing Zhao
• Reporter: Zhe Zhang
• Created: 21/Jul/15 17:23
• Updated: 30/Aug/16 01:31
• Resolved: 17/Aug/15 18:29

Description

Per discussion under HDFS-8499, with the erasure coding feature, there will be 4 types of BlockInfo forming a multi-inheritance: complete+contiguous, complete+striping, UC+contiguous, UC+striped. We had the same challenge with INodeFile and the solution was building feature classes like FileUnderConstructionFeature. This JIRA aims to implement the same idea on BlockInfo.