[HDDS-2824] Add nullable annotation for client and server side of trash service

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Abandoned
• Target Version/s: 1.3.0
• Assignee: Yi-Sheng Lien
• Reporter: Yi-Sheng Lien
• Created: 30/Dec/19 13:12
• Updated: 21/Nov/22 08:45
• Resolved: 21/Nov/22 08:45

Description

Thanks maobaolong for the comment in https://github.com/apache/hadoop-ozone/pull/399/files#r361884516

We should add Nonnull annotation for those parameters that shouldn't be null.