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https://issues.apache.org/jira/browse/HDFS-10378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15276994#comment-15276994
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Yongjun Zhang edited comment on HDFS-10378 at 5/9/16 10:41 PM:
---------------------------------------------------------------
HI [~jzhuge],
Thanks for reporting the issue and the patch. Couple of comments:
1. would you please provide single patch file that contains both the fix and
unit test, instead of multiple files?
2. {{setOwner}} expects user to be superuser or belonging to superuser group.
The call to {{fsd.checkOwner(pc, iip);}} appears to be no-op for this kind of
user. Would you please look into whether we really need the call
{{fsd.checkOwner(pc, iip);}} at all in {{setOwner}} method? Is being superuser
both necessary and sufficient condition for this method?
Thanks.
was (Author: yzhangal):
HI [~jzhuge],
Thanks for reporting the issue and the patch. Couple of comments:
1. would you please provide single patch file that contains both the fix and
unit test, instead of multiple files?
2. {{setOwner}} expects user to be superuser or belonging to superuser group.
The call to {{fsd.checkOwner(pc, iip);}} appears to be non-op for this kind of
user. Would you please look into whether we really need the call
{{fsd.checkOwner(pc, iip);}} at all in {{setOwner}} method? Is being superuser
both necessary and sufficient condition for this method?
Thanks.
> setOwner throws AccessControlException with wrong message
> ---------------------------------------------------------
>
> Key: HDFS-10378
> URL: https://issues.apache.org/jira/browse/HDFS-10378
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 2.8.0
> Reporter: John Zhuge
> Assignee: John Zhuge
> Priority: Minor
> Labels: supportability
> Attachments: HDFS-10378-unit.patch, HDFS-10378.001.patch
>
>
> Calling {{setOwner}} as a non-super user does trigger
> {{AccessControlException}}, however, the message "Permission denied.
> user=user1967821757 is not the owner of inode=child" is wrong. Expect this
> message: "Non-super user cannot change owner".
> Output of patched unit test {{TestPermission.testFilePermission}}:
> {noformat}
> 2016-05-06 16:45:44,915 [main] INFO security.TestPermission
> (TestPermission.java:testFilePermission(280)) - GOOD: got
> org.apache.hadoop.security.AccessControlException: Permission denied.
> user=user1967821757 is not the owner of inode=child1
> at
> org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkOwner(FSPermissionChecker.java:273)
> at
> org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:250)
> at
> org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:190)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkPermission(FSDirectory.java:1642)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkPermission(FSDirectory.java:1626)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirectory.checkOwner(FSDirectory.java:1595)
> at
> org.apache.hadoop.hdfs.server.namenode.FSDirAttrOp.setOwner(FSDirAttrOp.java:88)
> at
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.setOwner(FSNamesystem.java:1717)
> at
> org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.setOwner(NameNodeRpcServer.java:835)
> at
> org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.setOwner(ClientNamenodeProtocolServerSideTranslatorPB.java:481)
> at
> org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
> at
> org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:665)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:989)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2423)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2419)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:415)
> at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1755)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2417)
> {noformat}
> Will upload the unit test patch shortly.
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