[HBASE-22735] list_regions may throw an error if a region is RIT

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.5.0
• Fix Version/s: 3.0.0-alpha-1, 1.5.0, 2.3.0, 2.2.1, 2.1.6, 1.4.11
• Component/s: shell
• Hadoop Flags: Reviewed
• Assignee: Viraj Jasani
• Reporter: Andrew Kyle Purtell
• Created: 26/Jul/19 01:22
• Updated: 04/Oct/19 16:42
• Resolved: 04/Oct/19 16:42

Description

The 'list_regions' shell command gets a list of regions for a given table and then prints them and some attributes such as the server where they are located, current request count, data locality, and such.

However if a region is in transition the command might fail with

ERROR: undefined method `getDataLocality' for nil:NilClass

and there may be other ways this can happen. Protect against use of nil references and just display what we can.

Issue Links

• is blocked by: HBASE-22770 TestShell fails on trunk with NameError: missing class name (`org.apache.hadoop.hbase.ClusterStatus')
• links to: GitHub Pull Request #429