[HDFS-1462] Refactor edit log loading to a separate class from edit log writing

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.22.0
• Fix Version/s: 0.22.0
• Component/s: namenode
• Hadoop Flags: Reviewed
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 19/Oct/10 02:56
• Updated: 12/Dec/11 06:19
• Resolved: 29/Oct/10 17:05

Description

Before the major work in HDFS-1073, I'd like to do this refactor to clean up the monster FSEditLog class. We can separate all the functions that take of loading edits into an FSN from the functions that take care of writing edits, rolling, etc.