JNSimba opened a new pull request, #66771:
URL: https://github.com/apache/doris/pull/66771
### What problem does this PR solve?
Issue Number: None
Related PR: None
Problem Summary:
CDC streaming jobs encoded JSON records with `String.getBytes()`, so the
stream-load payload depended on the CDC Client JVM default charset. On JVMs
using a non-UTF-8 default charset, characters such as Chinese text and emoji
were replaced with question marks before reaching Doris. Encode records
explicitly as UTF-8, matching the existing CDC fetch path and the stream-load
JSON contract.
Before the change, `MySqlCharsetITCase` running with
`-Dfile.encoding=US-ASCII` failed with `expected: "测试数据😀" but was: "?????"`.
After the change, the same test passes without requiring the CDC Client JVM
default charset to be UTF-8.
### Release note
Fix CDC streaming jobs corrupting non-ASCII text when the CDC Client JVM
uses a non-UTF-8 default charset.
### Check List (For Author)
- Test
- [x] Regression test
- [ ] Unit Test
- [ ] Manual test (add detailed scripts or steps below)
- [ ] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [ ] Previous test can cover this change.
- [ ] No code files have been changed.
- [ ] Other reason
```shell
mvn -Dtest=MySqlCharsetITCase
"-Dtest.add.opens=--add-opens=java.base/java.lang=ALL-UNNAMED
--add-opens=java.base/java.util=ALL-UNNAMED
--add-opens=java.base/java.math=ALL-UNNAMED
--add-opens=java.base/java.nio=ALL-UNNAMED -Dfile.encoding=US-ASCII" test
```
- Behavior changed:
- [ ] No.
- [x] Yes. CDC stream-load records are always encoded as UTF-8.
- Does this need documentation?
- [x] No.
- [ ] Yes.
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label
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