go-redis/redis · error

redis: failed to set command value: %v

Error message

redis: failed to set command value: %v

What it means

Error "redis: failed to set command value: %v" thrown in go-redis/redis.

Source

Thrown at osscluster_router.go:1002

	switch cmd.(type) {
	case *XAutoClaimCmd, *XAutoClaimJustIDCmd:
		args = append(args, reflect.ValueOf(""))
	case *ScanCmd:
		args = append(args, reflect.ValueOf(uint64(0)))
	case *KeyValuesCmd, *ZSliceWithKeyCmd:
		if key, ok := value.(string); ok {
			args = []reflect.Value{reflect.ValueOf(key)}
			if _, ok := cmd.(*ZSliceWithKeyCmd); ok {
				args = append(args, reflect.ValueOf([]Z{}))
			} else {
				args = append(args, reflect.ValueOf([]string{}))
			}
		}
	}

	defer func() {
		if r := recover(); r != nil {
			cmd.SetErr(fmt.Errorf("redis: failed to set command value: %v", r))
		}
	}()

	setValMethod.Call(args)
	return nil
}

View on GitHub (pinned to 36d97525cd)

Solutions

1. Inspect the error value; SetVal on the aggregated command failed
2. Ensure the aggregated result type matches the command's expected value type

When it happens

Trigger: Thrown at osscluster_router.go:1002 when the library encounters an invalid state.

Common situations: Type-match aggregator outputs to the Cmder value type before SetVal.

AI-assisted analysis of go-redis/redis@36d97525cd (2026-08-06). Data as JSON: /data/errors/80b79cd211715240.json. Report an issue: GitHub.