suxiaogang223 opened a new pull request, #60947:
URL: https://github.com/apache/doris/pull/60947
### What problem does this PR solve?
Issue Number: N/A
Related PR: N/A
Problem Summary:
`external_table_p0/hive/test_hive_compress_type.groovy` had a fixed split
assertion (`28`) for multi-BE, which is not stable across environments.
The split behavior for COUNT pushdown depends on both `backendNum` and
`parallel_fragment_exec_instance_num`, so internal 3BE pipeline could still
produce `16` and fail.
This PR makes the assertion BE-aware and deterministic:
- read `backendNum` via `show backends`
- read `parallel_fragment_exec_instance_num` via `show variables`
- compute expected split count with the same condition as FE logic
- add comments to explain why this check differs between environments
### Release note
None
### Check List (For Author)
- Test <!-- At least one of them must be included. -->
- [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 <!-- Add your reason? -->
- Behavior changed:
- [x] No.
- [ ] Yes. <!-- Explain the behavior change -->
- Does this need documentation?
- [x] 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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