pan3793 commented on code in PR #7636:
URL: https://github.com/apache/kyuubi/pull/7636#discussion_r3809777123


##########
externals/kyuubi-spark-sql-engine/pom.xml:
##########
@@ -405,6 +430,17 @@
                             <pattern>net.bytebuddy</pattern>
                             
<shadedPattern>${kyuubi.shade.packageName}.net.bytebuddy</shadedPattern>
                         </relocation>
+                        <!--
+                          Relocate the bundled arrow-compression classes so 
that Kyuubi's copy
+                          never conflicts with the arrow-compression jar 
shipped by Spark 4.1+.
+                          The relocated codec classes still resolve the 
unrelocated
+                          org.apache.arrow.vector.* and 
com.github.luben.zstd.* types, which are

Review Comment:
   > One alternative is to keep the original one-argument 
VectorLoader/VectorUnloader for none, and only use the compression-aware path 
for zstd.
   
   it's does not work if it can be changed at the session level



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