[HDFS-2671] HA: NN should throw StandbyException in response to RPCs in STANDBY state

• 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: 13/Dec/11 06:06
• Updated: 14/Dec/11 18:10
• Resolved: 14/Dec/11 08:56

Description

Currently the NN is throwing UnsupportedActionException when it is hit with RPCs while in Standby. This is what the StandbyException class is meant for. The wrong type is preventing client failover from working as designed.