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https://issues.apache.org/jira/browse/HDFS-11210?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Chen updated HDFS-11210:
-----------------------------
    Summary: Enhance key rolling to be guarantee new KeyVersion is returned 
from generateEncryptedKeys after a key version is rolled  (was: Enhance key 
rolling to be atomic)

> Enhance key rolling to be guarantee new KeyVersion is returned from 
> generateEncryptedKeys after a key version is rolled
> -----------------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-11210
>                 URL: https://issues.apache.org/jira/browse/HDFS-11210
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: encryption, kms
>    Affects Versions: 2.6.5
>            Reporter: Xiao Chen
>            Assignee: Xiao Chen
>         Attachments: HDFS-11210.01.patch, HDFS-11210.02.patch
>
>
> To support re-encrypting EDEK, we need to make sure after a key is rolled, no 
> old version EDEKs are used anymore. This includes various caches when 
> generating EDEK.
> This is not true currently, simply because no such requirements / necessities 
> before.
> This includes
> - Client Provider(s), and corresponding cache(s).
> When LoadBalancingKMSCP is used, we need to clear all KMSCPs.
> - KMS server instance(s), and corresponding cache(s)
> When KMS HA is configured with multiple KMS instances, only 1 will receive 
> the {{rollNewVersion}} request, we need to make sure other instances are 
> rolled too.
> - The Client instance inside NN(s), and corresponding cache(s)
> When {{hadoop key roll}} is succeeded, the client provider inside NN should 
> be drained too.



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