[HDFS-17173] Whether the read lock in method moveBlockAcrossVolumes can be removed or not?

• Type: Wish
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Affects Version/s: 3.4.0
• Component/s: datanode
• Target Version/s: 3.5.0
• Assignee: farmmamba
• Reporter: farmmamba
• Created: 30/Aug/23 07:14
• Updated: 04/Jan/24 08:01

Description

In method FsDatasetImpl#moveBlockAcrossVolumes, obtaining volumeRef is guarded by 

LockLevel.BLOCK_POOl read lock. It seems unnecessary.