[HDDS-9197] EC: Mark EC containers unhealthy when not missing but unrecoverable

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.4.0
• Labels: pull-request-available
• Target Version/s: 1.4.0
• Assignee: Stephen O'Donnell
• Reporter: Stephen O'Donnell
• Created: 22/Aug/23 14:29
• Updated: 21/Jan/24 15:12
• Resolved: 24/Aug/23 05:41

Description

An EC container should only be marked as unhealthy if:

1) Is not missing (has at least dataNum replica indexs online)

2) Has at least dataNum Healthy indexes online.

For a 3-2 container, this means that:

Healthy, Healthy -> This is missing

Unhealthy, Unhealthy -> This is missing as it doesn't matter that the replicas are unhealthy, as we could not read it anyway as we need at least 3 replicas.

Healthy, Healthy, Unhealthy (indexes 1, 2, 3) -> This is unhealthy as technically much of the data can still be read, but it is the unhealthy container which is causing the problem and making it unrecoverable.

Healthy, Healthy, Healthy, Unhealthy -> This is under replicated, as we can recover using the 3 healthy.

Issue Links

• links to: GitHub Pull Request #5209