freezhan commented on pull request #12157:
URL: https://github.com/apache/flink/pull/12157#issuecomment-656483534
In addition, our internal temporary repair method is
```java
this.prefix = prefix.substring(0, Math.min(prefix.length(),
200)) + "-" + EncodingUtils.hex(EncodingUtils.md5(prefix));
```
how about that?
Can add this sentence before calling the `TransactionalIdsGenerator `
constructor, and then add a length check inside the constructor.
But I still think it makes sense to let users pass it in.
If the user does not specify the prefix parameter, the default is a whole
bunch of context characters(Keep it the same as before)
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