LanstonWu commented on issue #14911:
URL: https://github.com/apache/iceberg/issues/14911#issuecomment-3685683981

   @dramaticlly @RussellSpitzer 
   Thank you for your time, because Iceberg 1.6.1 is the last release that 
supports java 8, and I can't use 1.7, 1.8 or new. After my analysis, I finally 
understand that I encountered this cause because Iceberg 1.6.1 is support for 
Hive 2.x and Hive 3.x, and because the vectorized reading (such 
HiveVectorizedReader, HiveIcebergVectorizedRecordReader)  is only available for 
Hive 3.x not Hive 2.x, so it will compile min Jar file  to support both Hive 
2.x and Hive 3.x if use standard command like (./gradlew build)
   Finally, I compiled the Jar file that like release on Maven repository by 
using the following command:
   `
   ./gradlew iceberg-hive-runtime:shadowJar iceberg-hive3-orc-bundle:shadowJa 
-x generateGitProperties -x test -x spotlessJavaCheck 
   `
   When the compile is down, I can find the vectorized reading (such 
HiveVectorizedReader, HiveIcebergVectorizedRecordReader) is exists.
   
   <img width="1237" height="246" alt="Image" 
src="https://github.com/user-attachments/assets/d9a64146-a51c-4491-94c2-60bff27d5220";
 />


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