[HBASE-25332] one NPE

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0-alpha-1, 2.4.0, 2.2.7, 2.3.4
• Component/s: Zookeeper
• Hadoop Flags: Reviewed
• Assignee: lujie
• Reporter: lujie
• Created: 26/Nov/20 02:56
• Updated: 11/Dec/20 09:18
• Resolved: 11/Dec/20 09:18

Description

• getData can return null at 
  https://github.com/apache/hbase/blob/1726160839368df14602da1618e3538955b25f74/hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKUtil.java#L615
  or
  https://github.com/apache/hbase/blob/1726160839368df14602da1618e3538955b25f74/hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKUtil.java#L619
  all its caller have null checker except at
  https://github.com/apache/hbase/blob/1726160839368df14602da1618e3538955b25f74/hbase-server/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupInfoManagerImpl.java#L467

We shoud add null check for pontential NPEs.

Issue Links

• links to: GitHub Pull Request #2715