[HDFS-5159] Secondary NameNode fails to checkpoint if error occurs downloading edits on first checkpoint

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.0-beta
• Fix Version/s: 2.1.1-beta
• Component/s: namenode
• Target Version/s: 2.1.1-beta
• Hadoop Flags: Reviewed
• Assignee: Aaron Myers
• Reporter: Aaron Myers
• Created: 04/Sep/13 03:39
• Updated: 24/Sep/13 23:33
• Resolved: 05/Sep/13 16:57

Description

The 2NN will avoid downloading/loading a new fsimage if its local copy of fsimage is the same as the version on the NN. However, the decision to load the fsimage from disk into memory is based only on the on-disk fsimage version. If an error occurs between downloading and loading the fsimage on the first checkpoint attempt, the 2NN will never load the fsimage, and then on subsequent checkpoint attempts it will not load the on-disk fsimage and thus will never checkpoint successfully.

Example error message in the first comment of this ticket.