Github user dongjoon-hyun commented on the issue:
https://github.com/apache/spark/pull/18953
The goal is using ORC with `-Phive`. You can build Spark and use ORC
datasource.
Previously, `org.apache.spark.sql.hive.orc.ORCFileFormat` is tightly
coupled with Hive code outside `org.apache.spark.sql.hive.orc.` package. For
example, `org.apache.spark.sql.hive.HiveInspectors`. Also, it uses the
following imports.
```
import org.apache.hadoop.hive.conf.HiveConf.ConfVars
import org.apache.hadoop.hive.ql.io.orc._
import
org.apache.hadoop.hive.serde2.objectinspector.{SettableStructObjectInspector,
StructObjectInspector}
import org.apache.hadoop.hive.serde2.typeinfo.{StructTypeInfo,
TypeInfoUtils}
```
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