'Import Attachments' Not Working When Using a Large Attachment Zipped File

Summary

Trying to import only attachments to JIRA. It is not working when using a large data.zip file.

Environment

• JIRA Cloud
• File size: 3.7GB

Steps to Reproduce

1. Go to JIRA > Restore System
2. Choose Import attachments
3. Import a file > 3GB

Expected Results

A message is prompted to inform whether the import is failed/success. Eg:

Actual Results

After the file uploaded, nothing happens. (It didn't carry the next step nor show any message)

Workaround

1. Extract the zipped file
2. Split the attachments by projects with < 1GB each (before compressed). Eg:

   attachments-1.zip
   └─── data
         ├── attachments
         │         ├── ProjectKey1
         │         │         └── 10000
         │         │		├── IssueKey-1
         │         │		├── IssueKey-2
         │         │       	└── IssueKey-3
         │         ├── ProjectKey2
         │         └── ProjectKey3
         └── avatars
   attachments-2.zip
   └─── data
         └── attachments
                   ├── ProjectKey4
                   ├── ProjectKey5
                   └── ProjectKey6
   attachments-3.zip
   └─── data
         └── attachments
                   └── ProjectKey7
   

3. Zip the files separately
4. Import the files batch by batch