[Bug] When SW_AGENT_SAMPLE is set to less than 1, go-redis catches an err: go-redis :skyWalking failed to create exit span, got error: span type is wrong

[Qiangel]

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Apache SkyWalking Component

Go Agent (apache/skywalking-go)

What happened

I work in an environment that uses Redis.cluster,and set SW_AGENT_SAMPLE="0.1" , then when I use my redis client to execute a command like Ping, I get err: skyWalking failed to create exit span, got error: span type is wrong

What you expected to happen

I don't know if I can ignore this error, but I don't think my redis business should be affected by skywalking broken.

How to reproduce

1, Using the redis cluster 2, Set the environment configuration to export SW_AGENT_SAMPLE="0.1" 3, exec redisCluster.Ping(ctx).Err() i get err

I traced the stack, in the createSpan0 method in the core trace.go file, to return newNoopSpan() due to sampling, as follows: // Try to sample when it is not force sample if parentSpan == nil && !isForceSample { // Force sample sampled := t.Sampler.IsSampled(ds.OperationName) if !sampled { // Filter by sample just return noop span return newNoopSpan(), nil } } This gives me the errors.New("span type is wrong") error downstream,Mainly in Redis hooks I have to get err, but I don't expect to.It's affecting my business logic. Maybe it's a go-redis/v9 plugin bug?

Anything else

No response

Are you willing to submit a pull request to fix on your own?

• [ ] Yes I am willing to submit a pull request on my own!

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