[HDFS-5008] Make ClientProtocol#abandonBlock() idempotent

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 2.1.0-beta
• Component/s: namenode
• Hadoop Flags: Reviewed
• Assignee: Jing Zhao
• Reporter: Suresh Srinivas
• Created: 18/Jul/13 17:57
• Updated: 12/May/16 18:18
• Resolved: 22/Jul/13 18:31

Description

Currently when abandonBlock is called, if the block does not exist, then the namenode throws an exception. I propose making it idempotent, by returning success if the block that is being abandoned does not exist.

Thoughts?

Issue Links

• is related to: HDFS-4942 Add retry cache support in Namenode