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https://issues.apache.org/jira/browse/HDFS-10436?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yiqun Lin updated HDFS-10436:
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    Status: Patch Available  (was: Open)

Attach a simple patch for this. I think it will not affect the main logic in 
HDFS, the default value only used in {{DataNode#checkSecureConfig}} and 
{{BlockManager#createBlockTokenSecretManager}}. Thanks for review!

> dfs.block.access.token.enable should default on when security is !simple
> ------------------------------------------------------------------------
>
>                 Key: HDFS-10436
>                 URL: https://issues.apache.org/jira/browse/HDFS-10436
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: datanode, namenode
>    Affects Versions: 3.0.0-alpha1
>            Reporter: Allen Wittenauer
>            Assignee: Yiqun Lin
>         Attachments: HDFS-10436.001.patch
>
>
> Unless there is a valid configuration where dfs.block.access.token.enable is 
> off and security is on, then rather than shutdown we should just enable the 
> block access tokens.



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