[HDFS-15913] Remove useless NULL checks before instanceof

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 3.4.0
• Component/s: hdfs
• Labels: pull-request-available
• Hadoop Flags: Reviewed
• Flags: Patch
• Assignee: Jiajun Jiang
• Reporter: Jiajun Jiang
• Created: 23/Mar/21 07:33
• Updated: 23/Mar/21 15:53
• Resolved: 23/Mar/21 15:51

Description

Remove useless NULL checks before instanceof in several classes.

Issue Links

• links to: GitHub Pull Request #2805