ResourceModel: panic: runtime error

[chaunceyjiang]

What happened:

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

I don't know how to reproduce it. It's default resource models.

Anything else we need to know?:

Environment:

• Karmada version: release-1.5
• kubectl-karmada or karmadactl version (the result of kubectl-karmada version or karmadactl version):
• Others:

[RainbowMango]

What operations did you do before the panic? Does the panic persist?

cc @Poor12 @halfrost
/priority important-soon

[halfrost]

We can analyze the possible reasons from this log file:

The panic occurs at modeling.go line 90, which means that initializes the modelSortings dictionary. If this line panics, it may be that rsList[index][name] does not exist. In line 78, I judged that if (len(rsName) != len(rsList[0]), then an error will be thrown. Can you reproduce this panic in the test environment? I can added a log here like this commit. If you can be reproduced, you will see this log.

The name in ResourceList does not exist: name is %v, resourceList is %v

[sunbinnnnn]

The same panic occurs with release-1.5. But I find that I have adjust the resource model to a limited range level:

  resourceModels:
  - grade: 0
    ranges:
    - max: "9223372036854775807"
      min: "0"
      name: cpu
    - max: "9223372036854775807"
      min: "0"
      name: memory

If a add a grade 1, everything is fine. the resourceMoels list should not less than 2(which means for cpu and memory).

[RainbowMango]

Thank you @sunbinnnnn.

@chaunceyjiang could you please try to reproduce it and take a look #3591?

[RainbowMango]

/assign @sunbinnnnn
In favor of #3591.