spark用自己的格式读取hive文件后进行自动转换后进行操作

官方说明

spark用自己的格式读取hive文件后进行自动转换后进行操作

官方说明

spark.sql.hive.convertMetastoreParquet ： When reading from and writing
to Hive metastore Parquet tables, Spark SQL will try to use its own
Parquet support instead of Hive SerDe for better performance. This
behavior is controlled by the spark.sql.hive.convertMetastoreParquet
configuration, and is turned on by default.

spark.sql.hive.convertMetastoreOrc: enables new ORC format to
read/write Hive Tables.