[OAK-2112] DocumentNodeStore: Error calculating the machine id

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.0.21
• Fix Version/s: 1.0.22, 1.1.1
• Component/s: mongomk
• Assignee: Thomas Mueller
• Reporter: Thomas Mueller
• Created: 18/Sep/14 15:07
• Updated: 22/Sep/15 15:03
• Resolved: 06/Oct/14 12:28

Description

In some cases, the machine id (which is used to identify the cluster id) can not be calculated. The exception is a bit strange:

java.net.SocketException: No such device
	at java.net.NetworkInterface.getMacAddr0(Native Method)
	at java.net.NetworkInterface.getHardwareAddress(NetworkInterface.java:388) 
	at org.apache.jackrabbit.oak.plugins.document.ClusterNodeInfo.getMachineId(ClusterNodeInfo.java:454)

The exception should be logged as a warning, not an error. Also, the next network interface could be tried out.