[HBASE-15311] Prevent NPE in BlockCacheViewTmpl

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 1.3.0, 1.2.1, 1.1.4, 2.0.0
• Component/s: UI
• Hadoop Flags: Reviewed
• Assignee: Samir Ahmic
• Reporter: Samir Ahmic
• Created: 23/Feb/16 09:58
• Updated: 26/Feb/16 08:36
• Resolved: 25/Feb/16 23:26

Description

Currently we have this URL (rs-status?format=json&bcn=L1) for displaying block cache stats in json format. If arbitrary parameter is supplied instead of L1 it will cause NPE and we will display 500 error.