[HADOOP-15167] [viewfs] ls will fail when user doesn't exist

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.7.0
• Component/s: viewfs
• Assignee: Brahma Reddy Battula
• Reporter: Brahma Reddy Battula
• Created: 11/Jan/18 15:10
• Updated: 22/Jan/18 15:54

Description

Have Secure federated cluster with atleast two nameservices
Configure viewfs related configs

When we run the ls cmd in HDFS client ,we will call the method: org.apache.hadoop.fs.viewfs.ViewFileSystem.InternalDirOfViewFs#getFileStatus

it will try to get the group of the kerberos user. If the node has not this user, it fails.

Throws the following and exits.UserGroupInformation#getPrimaryGroupName

if (groups.isEmpty()) {
      throw new IOException("There is no primary group for UGI " + this);
    }