[ 
https://issues.apache.org/jira/browse/HDFS-9688?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15507419#comment-15507419
 ] 

Chris Trezzo commented on HDFS-9688:
------------------------------------

Hi [~zhz] [~andrew.wang]. TestNestedEncryptionZones#testNestedEncryptionZones 
seems to be failing in 
[branch-2.6.5|https://builds.apache.org/job/Hadoop-branch2-parameterized/13/testReport/org.apache.hadoop.hdfs.server.namenode/TestNestedEncryptionZones/testNestedEncryptionZones/]
 with the following error message:
{noformat}
java.lang.AssertionError: Should be able to rename the root dir of an EZ.
        at org.junit.Assert.fail(Assert.java:88)
        at 
org.apache.hadoop.hdfs.server.namenode.TestNestedEncryptionZones.testNestedEncryptionZones(TestNestedEncryptionZones.java:194)
{noformat}

{noformat}
2016-09-16 23:09:42,930 INFO  ipc.Server (Server.java:run(2061)) - IPC Server 
handler 9 on 60066, call org.apache.hadoop.hdfs.protocol.ClientProtocol.rename 
from 127.0.0.1:48977 Call#195 Retry#0
java.io.IOException: /topEZ/renamedFile can't be moved from encryption zone 
/topEZ to encryption zone /topEZ/nestedEZ.
        at 
org.apache.hadoop.hdfs.server.namenode.EncryptionZoneManager.checkMoveValidity(EncryptionZoneManager.java:285)
        at 
org.apache.hadoop.hdfs.server.namenode.FSDirectory.unprotectedRenameTo(FSDirectory.java:563)
        at 
org.apache.hadoop.hdfs.server.namenode.FSDirectory.renameTo(FSDirectory.java:477)
        at 
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.renameToInternal(FSNamesystem.java:3857)
        at 
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.renameToInt(FSNamesystem.java:3819)
        at 
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.renameTo(FSNamesystem.java:3784)
        at 
org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.rename(NameNodeRpcServer.java:787)
        at 
org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.rename(ClientNamenodeProtocolServerSideTranslatorPB.java:565)
        at 
org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
        at 
org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:619)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:975)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2040)
        at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2036)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:415)
        at 
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2034)
{noformat}

I can reproduce this on my local machine as well. I am currently investigating 
this. Does this failure ring any bells? I also see that this passes on 
branch-2.7, but I haven't checked branch-2.7.3 yet. Do you know if this was 
fixed sometime between 2.7.3 and the current branch-2.7? Thanks!

> Test the effect of nested encryption zones in HDFS downgrade
> ------------------------------------------------------------
>
>                 Key: HDFS-9688
>                 URL: https://issues.apache.org/jira/browse/HDFS-9688
>             Project: Hadoop HDFS
>          Issue Type: Test
>          Components: encryption, test
>            Reporter: Zhe Zhang
>            Assignee: Zhe Zhang
>             Fix For: 2.7.3, 2.6.5
>
>         Attachments: HDFS-9688-branch-2.6.00.patch, 
> HDFS-9688-branch-2.6.01.patch, HDFS-9688-branch-2.7.03.patch, 
> HDFS-9688-branch-2.7.04.patch, HDFS-9688-branch-2.8.03.patch
>
>




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