[HDFS-15767] RBF: Router federation rename of directory.

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.4.0
• Fix Version/s: 3.4.0
• Component/s: rbf
• Target Version/s: 3.4.0
• Hadoop Flags: Reviewed

Release Note

Added support for rename across namespaces for RBF through DistCp. By default the option is turned off, needs to be explicitly turned on by setting dfs.federation.router.federation.rename.option to DISTCP along with the configurations required for running DistCp. In general the client timeout should also be high enough to use this functionality to ensure that the client doesn't timeout.

• Assignee: Jinglun
• Reporter: Jinglun
• Created: 06/Jan/21 12:27
• Updated: 12/Feb/24 01:10
• Resolved: 26/Jan/21 08:59

Description

This Jira trys to support rename of directory across namespaces using fedbalance framework. 

We can do the router federation rename when:

1. Both the src and dst has only one remote location.
2. The src and dst remote locations are at different namespaces.
3. The src is a directory.(Fedbalance depends on snapshot).
4. The dst doesn't exist.

We can implement router federation rename of file in a new task so the patch won't be too big to review.