When I launch a simple MapReduce Pig script from Hue that requires data from HDFS, I receive an error that there is no such user as admin.

I recently upgraded from CDH 4.7 to CDH 5.1.0. I am using CM 5.0 to manage the cluster. I am using HDFS, Hue 3.6.0, and YARN with MRv2. The script simply reads from a file and cross joins with another file. The script worked on CDH 4.7, but fails after the upgrade to CDH 5.1.

I found no logs in Hue that were helpful, but in the YARN Resource Manager I found a very useful log:

2014-08-13 13:24:37,322 INFO org.apache.hadoop.yarn.server.resourcemanager.rmapp.RMAppImpl: application_1405638744143_0028 State change from NEW_SAVING to SUBMITTED
2014-08-13 13:24:37,379 WARN org.apache.hadoop.security.ShellBasedUnixGroupsMapping: got exception trying to get groups for user admin
org.apache.hadoop.util.Shell$ExitCodeException: id: admin: No such user

	at org.apache.hadoop.util.Shell.runCommand(Shell.java:511)
	at org.apache.hadoop.util.Shell.run(Shell.java:424)
	at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:656)
	at org.apache.hadoop.util.Shell.execCommand(Shell.java:745)
	at org.apache.hadoop.util.Shell.execCommand(Shell.java:728)
	at org.apache.hadoop.security.ShellBasedUnixGroupsMapping.getUnixGroups(ShellBasedUnixGroupsMapping.java:84)
	at org.apache.hadoop.security.ShellBasedUnixGroupsMapping.getGroups(ShellBasedUnixGroupsMapping.java:52)
	at org.apache.hadoop.security.Groups.getGroups(Groups.java:139)
	at org.apache.hadoop.security.UserGroupInformation.getGroupNames(UserGroupInformation.java:1415)
	at org.apache.hadoop.security.authorize.AccessControlList.isUserAllowed(AccessControlList.java:222)
	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.AllocationConfiguration.hasAccess(AllocationConfiguration.java:225)
	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FSQueue.hasAccess(FSQueue.java:150)
	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.addApplication(FairScheduler.java:622)
	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:1201)
	at org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler.handle(FairScheduler.java:122)
	at org.apache.hadoop.yarn.server.resourcemanager.ResourceManager$SchedulerEventDispatcher$EventProcessor.run(ResourceManager.java:585)
	at java.lang.Thread.run(Thread.java:745)
2014-08-13 13:24:37,381 WARN org.apache.hadoop.security.UserGroupInformation: No groups available for user admin
2014-08-13 13:24:37,381 INFO org.apache.hadoop.yarn.server.resourcemanager.scheduler.fair.FairScheduler: Accepted application application_1405638744143_0028 from user: admin, in queue: default, currently num of applications: 4