[HDFS-16368] DFSAdmin supports refresh topology info without restarting namenode

• Type: New Feature
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.7.7, 3.3.1
• Component/s: dfsadmin, namenode
• Labels: features pull-request-available
• Target Version/s: 3.3.1
• Flags: Patch
• Assignee: farmmamba
• Reporter: farmmamba
• Created: 02/Dec/21 08:38
• Updated: 16/Oct/24 18:29

Description

Currently in HDFS, if we update the rack info for rack-awareness, we may need to rolling restart namenodes to let it be effective. If cluster is large, the cost time of rolling restart namenodes is very log. So, we develope a method to refresh topology info without rolling restart namenodes.

Issue Links

• duplicates: HDFS-11242 Add refresh cluster network topology operation to dfs admin
• links to: GitHub Pull Request #3743