[jira] [Created] (HDFS-6951) Saving namespace and restarting NameNode will remove existing encryption zones

["Stephen Chu (JIRA)" <ji...@apache.org>]

Stephen Chu created HDFS-6951:
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             Summary: Saving namespace and restarting NameNode will remove existing encryption zones
                 Key: HDFS-6951
                 URL: https://issues.apache.org/jira/browse/HDFS-6951
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: encryption
    Affects Versions: 3.0.0
            Reporter: Stephen Chu
             Fix For: 3.0.0
         Attachments: HDFS-6951-testrepo.patch

Currently, when users save namespace and restart the NameNode, pre-existing encryption zones will be wiped out.

To reproduce:
* Create an encryption zone
* List encryption zones and verify the newly created zone is present
* Save the namespace
* Kill and restart the NameNode
* List the encryption zones and you'll find the encryption zone is missing

I've attached a test case for {{TestEncryptionZones}} that reproduces this as well. Removing the saveNamespace call will get the test to pass.



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