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https://issues.apache.org/jira/browse/HADOOP-8757?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14280312#comment-14280312
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Hudson commented on HADOOP-8757:
--------------------------------
FAILURE: Integrated in Hadoop-Hdfs-trunk-Java8 #72 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk-Java8/72/])
HADOOP-8757. Metrics should disallow names with invalid characters (rchiang via
rkanter) (rkanter: rev b6ff9c03a4f8aba945e562a7ff60b0fc6a1cd040)
*
hadoop-common-project/hadoop-common/src/test/java/org/apache/hadoop/metrics2/lib/TestMetricsRegistry.java
* hadoop-common-project/hadoop-common/CHANGES.txt
*
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/metrics2/lib/MetricsRegistry.java
> 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
> Assignee: Ray Chiang
> Priority: Minor
> Labels: newbie
> Fix For: 2.7.0
>
> Attachments: HADOOP-8757-01.patch, HADOOP-8757-02.patch,
> HADOOP-8757.003.patch
>
>
> 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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