Xiao Chen created HDFS-11210:
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Summary: Enhance key rolling to be atomic
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
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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