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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