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https://issues.apache.org/jira/browse/TEZ-2171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14346656#comment-14346656
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Rajesh Balamohan commented on TEZ-2171:
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lgtm. If someone needs it, DefaultMetricsSystem has to be enabled explicitly
(e.g like TEZ-1335)
> LLAP: DefaultMetricsSystem.shutdown() should not be called in TezChild
> ----------------------------------------------------------------------
>
> Key: TEZ-2171
> URL: https://issues.apache.org/jira/browse/TEZ-2171
> Project: Apache Tez
> Issue Type: Bug
> Affects Versions: 0.7.0
> Reporter: Prasanth Jayachandran
> Attachments: TEZ-2171-TEZ-2003.1.patch, TEZ-2171.1.patch
>
>
> DefaultMetricsSystem.shutdown() is called in TezChild. IIUC, shutdown is
> meant to be called in daemon context (datanode/namenode). LLAP daemon
> initializes the metrics system, after running the first query TezChild shuts
> down the metrics system which results in closing of all metrics
> endpoints/sinks.
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