[FLINK-3570] Replace random NIC selection heuristic by InetAddress.getLocalHost

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.0.0, 1.1.0
• Fix Version/s: 1.0.1, 1.1.0
• Component/s: Runtime / Coordination
• Assignee: Till Rohrmann
• Reporter: Till Rohrmann
• Created: 03/Mar/16 13:00
• Updated: 14/Apr/16 11:58
• Resolved: 04/Mar/16 09:37

Description

Currently, the ConnectionUtils.findAddressUsingStrategy method returns the first NetworkInterface whose address is not a loop back address, not a link local address and an Inet4Address. Before returning this address, it is retried to connect to the JobManager using the InetAddress.getLocalHost address a last time.

The heuristic, if not choosing the InetAddress.getLocalHost, often makes no sense because it returns a random NetworkInterface address. It would be better to simply return the InetAddress.getLocalHost() instead.