wuwenchi opened a new pull request, #51185:
URL: https://github.com/apache/doris/pull/51185
### What problem does this PR solve?
Problem Summary:
1. When adding splits to the queue, a retry mechanism is added to prevent
blocking and sticking.
2. We use a separate thread to fetch splits. When the SQL execution ends
early (such as `limit`), this thread needs to be handled. Now it is exited by
throwing an exception.
3. When there are multiple exceptions, overwriting would occur previously.
Now we use `addSuppressed` to prevent exception loss.
4. When initializing the split assignment, a timeout mechanism is added to
prevent the situation where the system gets stuck due to failing to obtain
splits.
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [ ] 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 <!-- Add your reason? -->
- Behavior changed:
- [ ] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [ ] No.
- [ ] Yes. <!-- Add document PR link here. eg:
https://github.com/apache/doris-website/pull/1214 -->
### Check List (For Reviewer who merge this PR)
- [ ] Confirm the release note
- [ ] Confirm test cases
- [ ] Confirm document
- [ ] Add branch pick label <!-- Add branch pick label that this PR should
merge into -->
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