[HADOOP-6667] RPC.waitForProxy should retry through NoRouteToHostException

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.21.0, 0.22.0
• Component/s: ipc
• Hadoop Flags: Reviewed
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 31/Mar/10 20:19
• Updated: 27/Apr/10 04:39
• Resolved: 27/Apr/10 04:39

Description

RPC.waitForProxy already loops through ConnectExceptions, but NoRouteToHostException is not a subclass of ConnectException. In the case that the NN is on a VIP, the No Route To Host error is reasonably common during a failover, so we should retry through it just the same as the other connection errors.