hubgeter opened a new pull request, #34256:
URL: https://github.com/apache/doris/pull/34256

   master #33935 
   1. support read iceberg complex type : struct map.
   2. support read the ORC storage format of Iceberg tables
   3. Supports reading of the iceberg table after schema change when using the 
orc storage format . In addition to the rename operation performed inside the 
struct. [iceberg schema 
change](https://iceberg.apache.org/docs/latest/evolution/#schema-evolution)
   4. support iceberg position delete.
   
   Related changes:
   1. Add in orc_reader: perform filtering operation when the column to be 
filtered does not exist in the current orc file. eg.  
   iceberg_table  :  a int, b string  
   add column ( c int ) to  iceberg_table.
   sql : `select * from iceberg_table where c is not null.`
   
   ## Proposed changes
   
   Issue Number: close #xxx
   
   <!--Describe your changes.-->
   
   ## Further comments
   
   If this is a relatively large or complex change, kick off the discussion at 
[[email protected]](mailto:[email protected]) by explaining why you 
chose the solution you did and what alternatives you considered, etc...
   
   


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