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https://issues.apache.org/jira/browse/HDFS-4056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13486894#comment-13486894
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Daryn Sharp commented on HDFS-4056:
-----------------------------------
A few clarifications: Starting the daemon thread does not automatically alter
the behavior of clients or tasks. They will not request or use tokens so the
secret manager will sit dormant. "Newer" clients can however request and use
tokens, while "older" clients work the same as before.
Even with or w/o SASL PLAIN auth, HADOOP-8733 and HADOOP-8784 should not be
reverted. They both implement correct behavior in a more general fashion.
> Always start the NN's SecretManager
> -----------------------------------
>
> Key: HDFS-4056
> URL: https://issues.apache.org/jira/browse/HDFS-4056
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: name-node
> Affects Versions: 0.23.0, 2.0.0-alpha, 3.0.0
> Reporter: Daryn Sharp
> Assignee: Daryn Sharp
> Attachments: HDFS-4056.patch
>
>
> To support the ability to use tokens regardless of whether kerberos is
> enabled, the NN's secret manager should always be started.
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