Andrew Wang created HDFS-6971:
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             Summary: Bounded staleness of EDEK caches on the NN
                 Key: HDFS-6971
                 URL: https://issues.apache.org/jira/browse/HDFS-6971
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: encryption
    Affects Versions: 2.5.0
            Reporter: Andrew Wang
            Assignee: Andrew Wang


The EDEK cache on the NN can hold onto keys after the admin has rolled the key. 
It'd be good to time-bound the caches, perhaps also providing an explicit 
"flush" command.



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