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https://issues.apache.org/jira/browse/HADOOP-15212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16354232#comment-16354232
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Daryn Sharp commented on HADOOP-15212:
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Only difference is the context of the imports.
> Add independent secret manager method for logging expired tokens
> ----------------------------------------------------------------
>
> Key: HADOOP-15212
> URL: https://issues.apache.org/jira/browse/HADOOP-15212
> Project: Hadoop Common
> Issue Type: Improvement
> Components: security
> Affects Versions: 2.7.6
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Priority: Major
> Attachments: HADOOP-15212.branch-2.7.patch, HADOOP-15212.patch
>
>
> {{AbstractDelegationTokenSecretManager#removeExpiredToken}} has two phases.
> First phase synchronizes to collect expired tokens. Second phase loops over
> the collected tokens to log them while not holding the monitor.
> HDFS-13112 needs to acquire the namesystem lock during the second logging
> phase, which requires splitting the method apart to allow a method override.
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