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https://issues.apache.org/jira/browse/HADOOP-10682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14113538#comment-14113538
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Akira AJISAKA commented on HADOOP-10682:
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bq. Regarding the issue, we should set the property case sensitive from 2.5.0.
Closing.
HADOOP-10468 was updated so that we could keep old (not case-sensitive) config
for 2.5.0 and up.
> Metrics are not output in trunk
> -------------------------------
>
> Key: HADOOP-10682
> URL: https://issues.apache.org/jira/browse/HADOOP-10682
> Project: Hadoop Common
> Issue Type: Bug
> Components: metrics
> Reporter: Akira AJISAKA
>
> Metrics are not output in trunk by the following configuration:
> {code}
> *.sink.file.class=org.apache.Hadoop.metrics2.sink.FileSink
> *.period=10
> namenode.sink.file.filename=namenode-metrics.out
> {code}
> The below change worked well.
> {code}
> - namenode.sink.file.filename=namenode-metrics.out
> + NameNode.sink.file.filename=namenode-metrics.out
> {code}
> It means that an old configuration doesn't work on trunk. We should fix it or
> document to use "NameNode".
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