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https://issues.apache.org/jira/browse/HADOOP-9589?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13680097#comment-13680097
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Jian He commented on HADOOP-9589:
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Hey Aaron, I think this does no major harm, but that we have a redundant key
when the secretManager starts.
> Extra master key is created when AbstractDelegationTokenSecretManager is
> started
> --------------------------------------------------------------------------------
>
> Key: HADOOP-9589
> URL: https://issues.apache.org/jira/browse/HADOOP-9589
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Jian He
> Assignee: Jian He
>
> When AbstractDelegationTokenSecretManager starts ,
> AbstractDelegationTokenSecretManager.startThreads().updateCurrentKey()
> creates the first master key. Immediately after that, ExpiredTokenRemover
> thread is started, and it will creates the second master by calling
> rollMasterKey on its first loop.
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