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https://issues.apache.org/jira/browse/HDFS-11069?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kihwal Lee updated HDFS-11069:
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Issue Type: Improvement (was: Bug)
> Tighten the authorization of datanode RPC
> -----------------------------------------
>
> Key: HDFS-11069
> URL: https://issues.apache.org/jira/browse/HDFS-11069
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: datanode, security
> Reporter: Kihwal Lee
>
> The current implementation of {{checkSuperuserPrivilege()}} allows the
> datanode user from any node to be recognized as a super user. If one
> datanode is compromised, the intruder can issue {{shutdownDatanode()}},
> {{evictWriters()}}, {{triggerBlockReport()}}, etc. against all other
> datanodes.
> This needs to be tightened to allow only the local datanode user.
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