[HDFS-5591] Checkpointing should use monotonic time when calculating period

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.2.0
• Fix Version/s: 2.5.0
• Component/s: namenode
• Labels: newbie
• Target Version/s: 2.5.0
• Assignee: Charles Lamb
• Reporter: Andrew Wang
• Created: 02/Dec/13 22:58
• Updated: 15/Aug/14 05:41
• Resolved: 02/Apr/14 08:35

Description

Both StandbyCheckpointer and SecondaryNameNode use Time.now rather than Time.monotonicNow to calculate how long it's been since the last checkpoint. This can lead to issues when the system time is changed.