[HDDS-6348] EC: PartialStripe failure handling logic is writing padding bytes also to DNs

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: EC-Branch
• Labels: pull-request-available
• Assignee: Uma Maheswara Rao G
• Reporter: Uma Maheswara Rao G
• Created: 18/Feb/22 23:36
• Updated: 24/Feb/22 06:06
• Resolved: 24/Feb/22 06:06

Description

cchenaxchen was chatting with me for an issue regarding offset mismatch failure.

While I am reviewing the code, I figured out that, in retry logic we are writing the padding bytes as well. The reason is, we used the cached bytes limit as the length. But by that time cached bytes would have been updated with padding data while writing previous parity bytes.

I am not very sure if this is the same issue, cchenaxchen is facing, but let me fix this and we will verify with this fix it it can fix. If issue is same, I will change the reporter to cchenaxchen 

 

I have a test to reproduce the case and I will upload it shortly.

Issue Links

• links to: GitHub Pull Request #3124