Extended attributes (xattrs) and Access Control Lists (ACLs) are not backed up or restored for Hadoop

Extended attributes allow user applications to associate additional metadata with a file or directory in Hadoop. By default, this is enabled on Hadoop Distributed File System (HDFS).

Access Control Lists provide a way to set different permissions for specific named users or named groups, in addition to the standard permissions. By default, this is disabled on HDFS.

Hadoop plug-ins do not capture extended attributes or Access Control Lists (ACLs) of an object during backup and hence these are not set on the restored files or folders.

Workaround:

If the extended attributes are set on any of the files or directories that is backed up using the BigData policy with Application_Type = hadoop, then, you have to explicitly set the extended attributes on the restored data.

Extended attributes can be set using the Hadoop shell commands such as fs -getfattr and hadoop fs -setfattr.

If the Access Control Lists (ACLs) are enabled and set on any of the files or directories that is backed up using the BigData policy with Application_Type = hadoop, then, you have to explicitly set the ACLs on the restored data.

ACLs can be set using the Hadoop shell commands such as hadoop fs -getfacl and hadoop fs -setfacl.