[FLINK-32161] Migrate and remove some legacy ExternalResource

• Type: Technical Debt
• Status: Resolved
• Priority: Major
• Resolution: Done
• Affects Version/s: 1.18.0
• Fix Version/s: 1.18.0
• Assignee: Weijie Guo
• Reporter: Weijie Guo
• Created: 23/May/23 10:23
• Updated: 25/May/23 08:31
• Resolved: 25/May/23 08:31

Description

We currently have some implementations of ExternalResource that are easy to migrate to the Extension of Junt5, such as MultipartUploadResource. This ticket attempts to migrate parts of those and remove old implementations that are not being used.