[HDFS-3497] Update Balancer policy with NodeGroup layer

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.0.0, 2.0.0-alpha
• Component/s: balancer & mover
• Assignee: Junping Du
• Reporter: Junping Du
• Created: 04/Jun/12 17:53
• Updated: 30/Nov/12 00:58
• Resolved: 30/Nov/12 00:58

Description

1. Make sure Network Topology and BlockPlacementPolicy check in balancer is compatible with new one with adding NodeGroup layer.
2. Update balancer policy for performance optimization with Node Group - "choose the target and source node on the same node group for balancing as the first priority".
3. Make sure balancing policy will not eliminate reliability on environment with nodegroup (virtualization) that verify good target on NodeGroup relationship. (This part of work is separated out and tracked in HDFS-3496)

Issue Links

• duplicates: HDFS-3495 Update Balancer to support new NetworkTopology with NodeGroup