Github user dongjoon-hyun commented on the issue: https://github.com/apache/spark/pull/18640 Hi, @rxin Since ORC 1.4.0, ORC community provides small shaded jar files to improve usability in general purposes. This PR uses the followings. - orc-core-1.4.0-nohive.jar (1.4MB) - orc-mapreduce-1.4.0-nohive.jar (739KB) The size is due to including the [followings](https://github.com/apache/orc/blob/master/java/pom.xml#L258-L259). - com.google.protobuf:protobuf-java - org.apache.hive:hive-storage-api In terms of the number of files, - ORC (354 files) - ProtoBuf (247 files) - Hive Storage API (92 files) The bottom line is there are still some source codes come from `org.apache.hive` namespace originally. So, I'm wondering if this is the reason why you want to put this into `sql/hive` module still and want to copy source codes instead of using this shaded jar?
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