[HADOOP-9734] Common protobuf definitions for GetUserMappingsProtocol, RefreshAuthorizationPolicyProtocol and RefreshUserMappingsProtocol

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.0.4-alpha
• Fix Version/s: 2.1.0-beta
• Component/s: ipc
• Target Version/s: 2.1.0-beta
• Hadoop Flags: Reviewed
• Assignee: Jason Darrell Lowe
• Reporter: Jason Darrell Lowe
• Created: 15/Jul/13 18:28
• Updated: 03/Sep/14 22:47
• Resolved: 17/Jul/13 00:15

Description

Many of the Hadoop server daemons support the concept of refreshing user mappings or getting the currently cached user-group mappings. Currently there are protocol buffer definitions of RefreshUserMappingsProtocol and GetUserMappingsProtocol in HDFS, but using it requires packages to depend upon HDFS when they may otherwise have no reason to do so. We should move the protocol buffer definitions and glue code to common for easier reuse.