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From "Stephen Chu (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-4913) Deleting file through fuse-dfs when using trash fails requiring root permissions
Date Mon, 17 Jun 2013 21:10:20 GMT
Stephen Chu created HDFS-4913:
---------------------------------

             Summary: Deleting file through fuse-dfs when using trash fails requiring root
permissions
                 Key: HDFS-4913
                 URL: https://issues.apache.org/jira/browse/HDFS-4913
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: fuse-dfs
    Affects Versions: 2.0.3-alpha
            Reporter: Stephen Chu


As _root_, I mounted HDFS with fuse-dfs using the -ousetrash option.

As _testuser_, I cd into the mount and touch a test file at _/user/testuser/testFile1_. As
the same user, I try to rm the file and run into an error:

{code}
[testuser@hdfs-vanilla-1 ~]$ cd /hdfs_mnt/user/testuser
[testuser@hdfs-vanilla-1 testuser]$ touch testFile1
[testuser@hdfs-vanilla-1 testuser]$ rm testFile1
rm: cannot remove `testFile1': Unknown error 255
{code}

I check the fuse-dfs debug output, and it shows that we attempt to mkdir /user/root/.Trash,
which testuser doesn't have permissions to.

Ideally, we'd be able to remove testFile1 and have testFile1 be put into /user/testuser/.Trash
instead of /user/root/.Trash.

Error in debug:
{code}
unlink /user/testuser/testFile1
hdfsCreateDirectory(/user/root/.Trash/Current/user/testuser): FileSystem#mkdirs error:
org.apache.hadoop.security.AccessControlException: Permission denied: user=testuser, access=WRITE,
inode="/user/root":root:supergroup:drwxr-xr-x
						   at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:224)
						   at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:204)
						   at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:149)
						   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:4716)
						   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:4698)
						   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkAncestorAccess(FSNamesystem.java:4672)
						   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInternal(FSNamesystem.java:3035)
						   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInt(FSNamesystem.java:2999)
						   at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:2980)
						   at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:648)
						   at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:419)
						   at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:44970)
						   at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:453)
						   at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1002)
						   at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1701)
						   at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1697)
						   at java.security.AccessController.doPrivileged(Native Method)
						   at javax.security.auth.Subject.doAs(Subject.java:396)
						   at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)
						   at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1695)

						   at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
						   at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
						   at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
						   at java.lang.reflect.Constructor.newInstance(Constructor.java:513)
						   at org.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:90)
						   at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:57)
						   at org.apache.hadoop.hdfs.DFSClient.primitiveMkdir(DFSClient.java:2153)
						   at org.apache.hadoop.hdfs.DFSClient.mkdirs(DFSClient.java:2122)
						   at org.apache.hadoop.hdfs.DistributedFileSystem.mkdirs(DistributedFileSystem.java:545)
						   at org.apache.hadoop.fs.FileSystem.mkdirs(FileSystem.java:1913)
Caused by: org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.AccessControlException):
Permission denied: user=testuser, access=WRITE, inode="/user/root":root:supergroup:drwxr-xr-x
       at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:224)
       at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.check(FSPermissionChecker.java:204)
       at org.apache.hadoop.hdfs.server.namenode.FSPermissionChecker.checkPermission(FSPermissionChecker.java:149)
       at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:4716)
       at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkPermission(FSNamesystem.java:4698)
       at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.checkAncestorAccess(FSNamesystem.java:4672)
       at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInternal(FSNamesystem.java:3035)
       at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirsInt(FSNamesystem.java:2999)
       at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.mkdirs(FSNamesystem.java:2980)
       at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.mkdirs(NameNodeRpcServer.java:648)
       at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.mkdirs(ClientNamenodeProtocolServerSideTranslatorPB.java:419)
       at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java:44970)
       at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:453)
       at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1002)
       at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1701)
       at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1697)
       at java.security.AccessController.doPrivileged(Native Method)
       at javax.security.auth.Subject.doAs(Subject.java:396)
       at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)
       at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1695)

       at org.apache.hadoop.ipc.Client.call(Client.java:1225)
       at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:202)
       at $Proxy9.mkdirs(Unknown Source)
       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
       at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
       at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
       at java.lang.reflect.Method.invoke(Method.java:597)
       at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:164)
       at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:83)
       at $Proxy9.mkdirs(Unknown Source)
       at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.mkdirs(ClientNamenodeProtocolTranslatorPB.java:426)
       at org.apache.hadoop.hdfs.DFSClient.primitiveMkdir(DFSClient.java:2151)
       ... 3 more
{code}

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