[Bug] Wrong label random generation method leads to illegal doris label

[monologuist]

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• I had searched in the issues and found no similar issues.

Version

Doris：2.1
doris-flink-connector：1.5.0+
Flink：1.16.2
Flink CDC： 3.0.1

What's Wrong?

I use Flink+Flink CDC to synchronize data from MySQL to Doris.
I found that Doris's label generator generates a label name like this: label _7_test_cust_d547cac0-d2d8-4705-8769-d1a03d364272.
This label contains an illegal "-" hyphen.
Such a label name is not recognized and accepted by Doris.
When you need to clean this label, an error will be generated: Encountered:-

By reading the source code, I found that many label generation methods in the LabelGenerator class use the UUID.randomUUID() method to generate random numbers. This is where the "-" symbol is introduced. [1]

[1] UUID is usually a string containing 32 hexadecimal characters in the following form:
550e8400-e29b-41d4-a716-446655440000
Each UUID consists of five parts, separated by hyphens "-".

I think this is a problem and needs to be fixed.

What You Expected?

Replace the "-" in label with "_" to ensure the generation of a legal random label.

How to Reproduce?

No response

Anything Else?

No response

Are you willing to submit PR?

• Yes I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct