[HADOOP-8077] HA: fencing method should be able to be configured on a per-NN or per-NS basis

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.24.0
• Fix Version/s: 2.0.0-alpha
• Component/s: ha
• Target Version/s: 0.24.0
• Hadoop Flags: Reviewed
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 15/Feb/12 19:00
• Updated: 23/May/12 20:15
• Resolved: 06/Apr/12 04:56

Description

Currently, the fencing method configuration is global. Given that different nameservices may use different underlying storage mechanisms or different types of PDUs, it would be preferable to allow the fencing method configuration to be scoped by namenode or nameservice.

Issue Links

• depends upon: HADOOP-8193 Refactor FailoverController/HAAdmin code to add an abstract class for "target" services
• is related to: HDFS-2935 HA: Shared edits dir property should be suffixed with nameservice and namenodeID