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https://issues.apache.org/jira/browse/HADOOP-15167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16322540#comment-16322540
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Ajay Kumar commented on HADOOP-15167:
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[~brahmareddy], thanks for working on this. Client with no group should be
allowed to retrieve fileStatus, however group field in FileStatus is not
mandatory. Since in this scenario we don't get a group for client we can pass
null for group. FileStatus constructor will handle it without complaining.
{code}this.owner = (owner == null) ? "" : owner;{code}
> [viewfs] ls will fail when user doesn't exist
> ---------------------------------------------
>
> Key: HADOOP-15167
> URL: https://issues.apache.org/jira/browse/HADOOP-15167
> Project: Hadoop Common
> Issue Type: Bug
> Components: viewfs
> Affects Versions: 2.7.0
> Reporter: Brahma Reddy Battula
> Assignee: Brahma Reddy Battula
> Attachments: HADOOP-15167.patch
>
>
> 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
> {code}
> if (groups.isEmpty()) {
> throw new IOException("There is no primary group for UGI " + this);
> }
> {code}
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