[HDDS-5893] Potential data loss on multipart upload commit

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.5.0, 1.0.0, 1.1.0
• Fix Version/s: 1.2.0
• Component/s: OM
• Labels: pull-request-available
• Assignee: UENISHI Kota
• Reporter: UENISHI Kota
• Created: 25/Oct/21 00:19
• Updated: 27/Oct/21 03:30
• Resolved: 26/Oct/21 21:50

Description

In case mutlipart upload completion with unused parts, and the key is not first created (some previous versions in deletion table), the committed live version of OmKeyInfo is added to deletion table. The key will be live until the deletion service collects the blocks, but after blocks deleted, the key metadata will be visible from user API while the blocks are already deleted.

This potential bug has been resident since HDDS-2395, as long as I searched the Git history. (I have just found this issue during the code review, so I have not yet reproduced manually and I may miss other code.) I'll post an instant patch later.

Issue Links

• blocks: HDDS-5896 Cherry pick HDDS-5893 to 1.2 release branch to fix MPU data loss
• links to: GitHub Pull Request #2763