[HDFS-9112] Improve error message for Haadmin when multiple name service IDs are configured

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.1
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: tools
• Target Version/s: 2.7.2
• Hadoop Flags: Reviewed
• Assignee: Anu Engineer
• Reporter: Anu Engineer
• Created: 19/Sep/15 00:08
• Updated: 30/Aug/16 01:27
• Resolved: 25/Sep/15 21:23

Description

In HDFS-6376 we supported a feature for distcp that allows multiple NameService IDs to be specified so that we can copy from two HA enabled clusters.

That confuses haadmin command since we have a check in DFSUtil#getNamenodeServiceAddr which fails if it finds more than 1 name in that property.