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https://issues.apache.org/jira/browse/YARN-4570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15112677#comment-15112677
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Chang Li commented on YARN-4570:
Profiled several nodemanagers' heap dump in our clusters,
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https://issues.apache.org/jira/browse/YARN-4570?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=1508#comment-1508
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Jason Lowe commented on YARN-4570:
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The "testing" user shows up in the LocalizerTokenIdent