shuke987 opened a new pull request, #65413:
URL: https://github.com/apache/doris/pull/65413

   ## Summary
   
   Stabilize `test_base_compaction_with_dup_key_max_file_size_limit` on master 
by making the expected base-compaction size gate deterministic.
   
   The case expects manual base compaction on a DUPLICATE KEY tablet to be 
rejected with `E-808` after the first input rowset exceeds 
`base_compaction_dup_key_max_file_size_mbytes`. The TPCH customer load can 
produce rowsets below the default 1GB threshold, so the manual compaction may 
succeed instead of hitting the rejection path.
   
   This patch:
   - disables BE auto compaction cluster-wide while the case is running
   - lowers `base_compaction_dup_key_max_file_size_mbytes` to 100MB for this 
case
   - restores both original BE configs in `finally`
   
   ## Testing
   
   - [x] `git diff --check`
   - [x] Verified the same failure mode and fix on branch-4.1 remote regression 
environment; the final manual base compaction returned `E-808` and the suite 
passed.
   


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