[HDFS-9332] Fix Precondition failures from NameNodeEditLogRoller while saving namespace

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.3.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Target Version/s: 2.8.0
• Assignee: Andrew Wang
• Reporter: Andrew Wang
• Created: 28/Oct/15 22:06
• Updated: 30/Aug/16 01:24
• Resolved: 29/Oct/15 18:31

Description

The check for the # of txns in the open edit log does not first check that an edit log segment is open, leading to a Precondition failure. This surfaced at HDFS-7871 which fixed that it was printing in a tight loop, but the cause of the Precondition failure is still present.