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Posted to common-issues@hadoop.apache.org by "Todd Lipcon (JIRA)" <ji...@apache.org> on 2012/09/01 03:49:07 UTC

[jira] [Created] (HADOOP-8757) Metrics should disallow names with invalid characters

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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