leaves12138 opened a new pull request, #7786:
URL: https://github.com/apache/paimon/pull/7786

   ## Summary
   
   - Inject Paimon catalog context into catalog-aware Flink functions.
   - Make `sys.blob_view` resolve blob fields by name through the catalog while 
keeping the legacy `(identifier, fieldId, rowId)` overload.
   - Add a flat `unionAll` helper for BTree index topology and cover it with a 
regression test.
   
   ## Root Cause
   
   The stash conflicted with an upstream BlobViewStruct change that now stores 
table identifiers as `Identifier`. The catalog-aware BlobView path also needed 
the Flink catalog context during function instantiation so it can resolve field 
IDs from table metadata at runtime.
   
   ## Validation
   
   - `mvn -pl paimon-flink/paimon-flink-common -am -Pfast-build -DskipTests 
compile`
   - `mvn -pl paimon-flink/paimon-flink-common -DfailIfNoTests=false 
-Dtest=BlobTableITCase#testWriteBlobViewWithBuiltInFunction,BTreeIndexTopoBuilderTest
 test`
   


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