Hadoop JMX usage makes Nagios monitoring impossible
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Key: HADOOP-4482
URL: https://issues.apache.org/jira/browse/HADOOP-4482
Project: Hadoop Core
Issue Type: Improvement
Components: metrics
Affects Versions: 0.18.1
Reporter: Brian Bockelman
Fix For: 0.19.1
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.
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