suxiaogang223 opened a new pull request, #61241:
URL: https://github.com/apache/doris/pull/61241
### What problem does this PR solve?
Issue Number: N/A
Related PR: #60947
Problem Summary:
`external_table_p0/hive/test_hive_compress_type.groovy` uses a fixed split
assertion (`16`) after `set file_split_size=8388608`.
This is stable in single-BE environments, but it can fail in multi-BE
pipelines because Hive COUNT pushdown split behavior depends on both
`backendNum` and `parallel_fragment_exec_instance_num`.
Community CI is typically single-BE and keeps the expected split count at
`16`.
Internal CI runs with multiple BEs, so the same query can produce `82` scan
ranges when `16 < parallel_fragment_exec_instance_num * backendNum`.
This PR makes the second explain assertion BE-aware and deterministic:
- reuse the existing `backendNum` and `parallel_fragment_exec_instance_num`
inputs in the case
- compute the expected split count for the `file_split_size=8388608` branch
with the same FE condition
- keep `16` for single-BE or low-parallelism environments, and expect `82`
when the multi-BE split condition is met
### 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)
- [x] No need to test or manual test. Explain why:
- [ ] This is a refactor/code format and no logic has been changed.
- [x] 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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