Gabriel39 opened a new pull request, #65281:
URL: https://github.com/apache/doris/pull/65281

   ### What problem does this PR solve?
   
   Issue Number: None
   
   Related PR: None
   
   Problem Summary: Add coverage for Iceberg/Paimon deletion-vector split and 
cache scenarios. The Iceberg regression writes one data file with one deletion 
vector, forces tiny splits, validates the filtered result with qt_, and checks 
the profile reports a single materialized deletion vector across multiple 
scanner entries. Paimon split/cache queries are converted to qt_ checks with 
generated expected output. Existing BE cache-key tests include scenario 
comments for Iceberg, Paimon, and format_v2 Paimon paths.
   
   ### Release note
   
   None
   
   ### Check List (For Author)
   
   - Test: Regression test / Unit Test
       - Remote BE UT: ./run-be-ut.sh --run 
--filter="PaimonDeletionVectorTest*:*IcebergDeleteFileReaderHelperTest*:*PaimonReaderTest.DeletionVectorCacheKeyIncludesOffsetAndLength"
       - Remote regression: ./run-regression-test.sh --run -d 
external_table_p0/iceberg -s test_iceberg_deletion_vector -forceGenOut
       - Remote regression: ./run-regression-test.sh --run -d 
external_table_p0/iceberg -s test_iceberg_deletion_vector
       - Remote regression: ./run-regression-test.sh --run -d 
external_table_p0/paimon -s test_paimon_deletion_vector -forceGenOut
       - Remote regression: ./run-regression-test.sh --run -d 
external_table_p0/paimon -s test_paimon_deletion_vector
   - Behavior changed: No
   - Does this need documentation: No


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