thanos-io/thanos · error

failed to unqote , in order to unmarshal as…

Error message

failed to unqote %v, in order to unmarshal as 'partial_response_strategy'. Possible values are %s

What it means

strconv.Unquote failed on the raw JSON bytes for the partial_response_strategy field, meaning the entry is not a valid quoted Go/JSON string (e.g. stray quotes, wrong quoting, control characters). The input at fault is the serialized rule/flag value being unmarshalled, and the message lists the accepted values.

Solutions

1. Fix the JSON/YAML source so the field is a properly quoted string
2. Use one of the documented values: abort or partial
3. If editing by hand, validate the file with a JSON linter before reloading

When it happens

Trigger: Thrown at pkg/store/storepb/custom.go:343 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of thanos-io/thanos@35b8b99117 (2026-09-07). Data as JSON: /api/errors/2a8bec59a8fe6708. Report an issue: GitHub.

Appendix: source

Thrown at pkg/store/storepb/custom.go:343

		return 1
	}
	if m == nil {
		return -1
	}

	if m.Type < b.Type {
		return 1
	}
	if m.Type > b.Type {
		return -1
	}
	return bytes.Compare(m.Data, b.Data)
}

func (x *PartialResponseStrategy) UnmarshalJSON(entry []byte) error {
	fieldStr, err := strconv.Unquote(string(entry))
	if err != nil {
		return errors.Wrapf(
			err,
			"failed to unqote %v, in order to unmarshal as 'partial_response_strategy'. Possible values are %s", string(entry), strings.Join(PartialResponseStrategyValues, ","),
		)
	}

	if fieldStr == "" {
		// NOTE: For Rule default is abort as this is recommended for alerting.
		*x = PartialResponseStrategy_ABORT
		return nil
	}

	strategy, ok := PartialResponseStrategy_value[strings.ToUpper(fieldStr)]
	if !ok {
		return errors.Errorf(
			"failed to unmarshal %v as 'partial_response_strategy'. Possible values are %s",
			string(entry),
			strings.Join(PartialResponseStrategyValues, ","),
		)

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