[HDFS-2793] Add an admin command to trigger an edit log roll

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0-alpha
• Fix Version/s: 2.0.2-alpha
• Component/s: namenode
• Target Version/s: 2.0.2-alpha
• Hadoop Flags: Reviewed
• Release Note: Introduced a new command, "hdfs dfsadmin -rollEdits" which requests that the active NameNode roll its edit log. This can be useful for administrators manually backing up log segments.
• Assignee: Todd Lipcon
• Reporter: Aaron Myers
• Created: 16/Jan/12 06:40
• Updated: 10/Mar/15 04:35
• Resolved: 05/Sep/12 04:42

Description

This seems like it would also be helpful outside of the context of HA, but especially so given that the standby can currently only read finalized log segments.