[HDFS-412] Hadoop JMX usage makes Nagios monitoring impossible

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.21.0
• Hadoop Flags: Reviewed
• Assignee: Brian Bockelman
• Reporter: Brian Bockelman
• Created: 21/Oct/08 20:37
• Updated: 24/Aug/10 20:48
• Resolved: 08/Sep/09 13:09

Description

When Hadoop reports Datanode information to JMX, the bean uses the name "DataNode-" + storageid. The storage ID incorporates a random number and is unpredictable.

This prevents me from monitoring DFS datanodes through Hadoop using the JMX interface; in order to do that, you must be able to specify the bean name on the command line.

The fix is simple, patch will be coming momentarily. However, there was probably a reason for making the datanodes all unique names which I'm unaware of, so it'd be nice to hear from the metrics maintainer.

Issue Links

• is related to: HADOOP-4520 javax.management.MalformedObjectNameException: Invalid character ':' in value part of property