[HBASE-25554] NPE when init RegionMover

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1, 2.5.0, 2.4.2
• Hadoop Flags: Reviewed
• Assignee: Baiqiang Zhao
• Reporter: Baiqiang Zhao
• Created: 05/Feb/21 07:36
• Updated: 12/Mar/21 08:40
• Resolved: 05/Feb/21 08:37

Description

When use graceful_stop.sh or command "${HBASE_HOME}/bin/hbase org.apache.hadoop.hbase.util.RegionMover -h", we can get NPE:

Exception in thread "main" java.lang.NullPointerExceptionException in thread "main" java.lang.NullPointerException at org.apache.hadoop.hbase.master.RackManager.<init>(RackManager.java:46) at org.apache.hadoop.hbase.util.RegionMover.<init>(RegionMover.java:128) at org.apache.hadoop.hbase.util.RegionMover.main(RegionMover.java:792)

Issue Links

• is caused by: HBASE-25211 Rack awareness in region_mover
• links to: GitHub Pull Request #2927