[HDFS-6469] Coordinated replication of the namespace using ConsensusNode

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.0.0-alpha1
• Component/s: namenode
• Assignee: Chao Sun
• Reporter: Konstantin Shvachko
• Created: 29/May/14 20:47
• Updated: 15/Dec/18 05:19

Description

This is a proposal to introduce ConsensusNode - an evolution of the NameNode, which enables replication of the namespace on multiple nodes of an HDFS cluster by means of a Coordination Engine.

Issue Links

• depends upon: HADOOP-10641 Introduce Coordination Engine interface
• is depended upon by: HDFS-4114 Remove the BackupNode and CheckpointNode from trunk
• supercedes: HDFS-2064 Warm HA NameNode going Hot
• links to: CNode Deep Dive meetup slides

Sub-Tasks

• Initial refactoring to allow ConsensusNode implementation: Resolved
• Interfaces to plugin ConsensusNode.: Open