yuzelin opened a new pull request, #2409:
URL: https://github.com/apache/incubator-paimon/pull/2409

   <!-- Please specify the module before the PR name: [core] ... or [flink] ... 
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   ### Purpose
   
   <!-- Linking this pull request to the issue -->
   
   <!-- What is the purpose of the change -->
   Currently, when we delete a tag, the data manifest entries are not merged, 
so the result may contains data files that should not be deleted. For example, 
a tag base is (+A, -A, +B), if we don't merge it, we will get candidate deleted 
file set (A, B).
   This PR fix it.
   
   ### Tests
   
   `UncleanedFileStoreExpireTest#testMixedSnapshotAndTagDeletion`
   ### API and Format
   
   <!-- Does this change affect API or storage format -->
   
   ### Documentation
   
   <!-- Does this change introduce a new feature -->
   


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