Todd Lipcon created HADOOP-8757:
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Summary: Metrics should disallow names with invalid characters
Key: HADOOP-8757
URL: https://issues.apache.org/jira/browse/HADOOP-8757
Project: Hadoop Common
Issue Type: Improvement
Components: metrics
Affects Versions: 2.0.0-alpha, 3.0.0
Reporter: Todd Lipcon
Priority: Minor
Just spent a couple hours trying to figure out why a metric I added didn't show up in JMX,
only to eventually realize it was because I had a whitespace in the property name. This didn't
cause any errors to be logged -- the metric just didn't show up in JMX. We should check that
the name is valid and log an error, or replace invalid characters with something like an underscore.
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