[HDFS-2692] HA: Bugs related to failover from/into safe-mode

• Type: Sub-task
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: HA branch (HDFS-1623)
• Fix Version/s: HA branch (HDFS-1623)
• Component/s: ha, namenode
• Target Version/s: HA branch (HDFS-1623)
• Hadoop Flags: Reviewed
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 15/Dec/11 23:00
• Updated: 21/Feb/12 17:20
• Resolved: 30/Dec/11 00:30

Description

In testing I saw an AssertionError come up several times when I was trying to do failover between two NNs where one or the other was in safe-mode. Need to write some unit tests to try to trigger this – hunch is it has something to do with the treatment of "safe block count" while tailing edits in safemode.

Issue Links

• is related to: HDFS-2973 HA: re-enable NO_ACK optimization for block deletion