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https://issues.apache.org/jira/browse/MAPREDUCE-4329?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13393480#comment-13393480
]
Sho Shimauchi commented on MAPREDUCE-4329:
------------------------------------------
Thanks for reviewing the patch!
Yeah your comment makes makes more sense, so I'll update the patch to replace
the old comment to yours.
This property was set as deprecated in MAPREDUCE-2746 so I don't think there is
nothing to do for trunk.
{code}
Configuration.addDeprecation("security.task.umbilical.protocol.acl",
new String[] {
MRJobConfig.MR_AM_SECURITY_SERVICE_AUTHORIZATION_TASK_UMBILICAL
});
{code}
> security.task.umbilical.protocol.acl should not be configurable
> ---------------------------------------------------------------
>
> Key: MAPREDUCE-4329
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-4329
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: security
> Affects Versions: 1.0.3
> Reporter: Sho Shimauchi
> Assignee: Sho Shimauchi
> Attachments: MAPREDUCE-4329.txt
>
>
> On running MapReduce job, username is changed to jobid and the job fails.
> Exception is as follows:
> {code}
> 2012-06-08 19:39:26,555 WARN
> org.apache.hadoop.security.ShellBasedUnixGroupsMapping: got exception trying
> to get groups for user job_201206081934_0002
> org.apache.hadoop.util.Shell$ExitCodeException: id: job_201206081934_0002: no
> such user
> at org.apache.hadoop.util.Shell.runCommand(Shell.java:255)
> at org.apache.hadoop.util.Shell.run(Shell.java:182)
> at
> org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:375)
> at org.apache.hadoop.util.Shell.execCommand(Shell.java:461)
> at org.apache.hadoop.util.Shell.execCommand(Shell.java:444)
> at
> org.apache.hadoop.security.ShellBasedUnixGroupsMapping.getUnixGroups(ShellBasedUnixGroupsMapping.java:68)
> at
> org.apache.hadoop.security.ShellBasedUnixGroupsMapping.getGroups(ShellBasedUnixGroupsMapping.java:45)
> at org.apache.hadoop.security.Groups.getGroups(Groups.java:79)
> at
> org.apache.hadoop.security.UserGroupInformation.getGroupNames(UserGroupInformation.java:1026)
> at
> org.apache.hadoop.security.authorize.AccessControlList.isUserAllowed(AccessControlList.java:141)
> at
> org.apache.hadoop.security.authorize.ServiceAuthorizationManager.authorize(ServiceAuthorizationManager.java:99)
> at org.apache.hadoop.ipc.Server.authorize(Server.java:1659)
> at
> org.apache.hadoop.ipc.Server$Connection.authorizeConnection(Server.java:1320)
> at
> org.apache.hadoop.ipc.Server$Connection.processOneRpc(Server.java:1286)
> at
> org.apache.hadoop.ipc.Server$Connection.readAndProcess(Server.java:1182)
> at org.apache.hadoop.ipc.Server$Listener.doRead(Server.java:537)
> at org.apache.hadoop.ipc.Server$Listener$Reader.run(Server.java:344)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
> at java.lang.Thread.run(Thread.java:680)
> {code}
> This issue can be reproduced by following steps:
> 1. set hadoop.security.authorization = true in core-site.xml
> {code}
> <property>
> <name>hadoop.security.authorization</name>
> <value>true</value>
> </property>
> {code}
> 2. set any value except for '*' to security.task.umbilical.protocol.acl in
> hadoop-policy.xml
> {code}
> <property>
> <name>security.task.umbilical.protocol.acl</name>
> <value>sho sho</value>
> <description>ACL for TaskUmbilicalProtocol, used by the map and reduce
> tasks to communicate with the parent tasktracker.
> The ACL is a comma-separated list of user and group names. The user and
> group list is separated by a blank. For e.g. "alice,bob users,wheel".
> A special value of "*" means all users are allowed.</description>
> </property>
> {code}
> 3. run any mapreduce job.
> h4. Code Analysis
> ./src/mapred/org/apache/hadoop/mapred/Child.java:102-118
> {code}
> UserGroupInformation taskOwner
> =
> UserGroupInformation.createRemoteUser(firstTaskid.getJobID().toString());
> taskOwner.addToken(jt);
>
> // Set the credentials
> defaultConf.setCredentials(credentials);
>
> final TaskUmbilicalProtocol umbilical =
> taskOwner.doAs(new PrivilegedExceptionAction<TaskUmbilicalProtocol>() {
> @Override
> public TaskUmbilicalProtocol run() throws Exception {
> return
> (TaskUmbilicalProtocol)RPC.getProxy(TaskUmbilicalProtocol.class,
> TaskUmbilicalProtocol.versionID,
> address,
> defaultConf);
> }
> });
> {code}
> This code indicates that TaskUmbilicalProtocol uses jobid as username.
> This code came from MAPREDUCE-1457.
> https://issues.apache.org/jira/browse/MAPREDUCE-1457
> Devaraj said as follows in the JIRA:
> {quote}
> 2) In Child.java, the task authenticates to the TaskTracker using the
> jobtoken. The username in the jobtoken is jobId. The doAs block done using
> taskOwner is required so that the username mentioned in the token and the one
> doing the operation matches.
> {quote}
> We can't change security.task.umbilical.protocol.acl and should always be '*'
> .
> TaskUmbilicalProtocol should be removed from MapReducePolicyProvider to
> disable security.task.umbilical.protocol.acl.
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