[HDFS-1681] Federation: support per pool and per node policies in Balancer

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Federation Branch
• Fix Version/s: Federation Branch
• Component/s: balancer & mover
• Hadoop Flags: Reviewed
• Release Note: Balancer: support per pool and per node policies.
• Assignee: Tsz-wo Sze
• Reporter: Tsz-wo Sze
• Created: 01/Mar/11 22:05
• Updated: 12/Nov/14 02:14
• Resolved: 02/Mar/11 21:47

Description

Change balancer to support per pool and per node policies.

per Node: Cluster is balance if each node is balance.
per Pool: Cluster is balance if each pool is balance.

Note that per Pool implies per Node but NOT the other way around.

Issue Links

• is depended upon by: HADOOP-7877 Federation: update Balancer documentation