Major Description
Currently, the outputs of EXPLAIN CREATE TABLE and DESC EXTENDED are not readable.
For example,
CREATE EXTERNAL TABLE extTable_with_partitions (key INT, value STRING) PARTITIONED BY (ds STRING, hr STRING) LOCATION '/private/var/folders/4b/sgmfldk15js406vk7lw5llzw0000gn/T/spark-b39a6185-8981-403b-a4aa-36fb2f4ca8a9'
The output of EXPLAIN command is
ExecutedCommand CreateTable CatalogTable(`extTable_with_partitions`,CatalogTableType(EXTERNAL),CatalogStorageFormat(Some(/private/var/folders/4b/sgmfldk15js406vk7lw5llzw0000gn/T/spark-dd234718-e85d-4c5a-8353-8f1834ac0323),Some(org.apache.hadoop.mapred.TextInputFormat),Some(org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat),None,false,Map()),List(CatalogColumn(key,int,true,None), CatalogColumn(value,string,true,None), CatalogColumn(ds,string,true,None), CatalogColumn(hr,string,true,None)),List(ds, hr),List(),List(),-1,,1463026413544,-1,Map(),None,None,None), false
The output of DESC EXTENDED is like
CatalogTable(`default`.`exttable_with_partitions`,CatalogTableType(EXTERNAL),CatalogStorageFormat(Some(file:/private/var/folders/4b/sgmfldk15js406vk7lw5llzw0000gn/T/spark-dd234718-e85d-4c5a-8353-8f1834ac0323),Some(org.apache.hadoop.mapred.TextInputFormat),Some(org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat),Some(org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe),false,Map(serialization.format -> 1)),ArrayBuffer(CatalogColumn(key,int,true,None), CatalogColumn(value,string,true,None), CatalogColumn(ds,string,true,None), CatalogColumn(hr,string,true,None)),ArrayBuffer(ds, hr),List(),Buffer(),-1,xiaoli,1463026414000,0,Map(EXTERNAL -> TRUE, transient_lastDdlTime -> 1463026414),None,None,None)
