Github user ericl commented on a diff in the pull request:

    https://github.com/apache/spark/pull/15515#discussion_r85429255
  
    --- Diff: 
sql/core/src/main/scala/org/apache/spark/sql/execution/command/createDataSourceTables.scala
 ---
    @@ -232,6 +238,15 @@ case class CreateDataSourceTableAsSelectCommand(
           sessionState.catalog.createTable(newTable, ignoreIfExists = false)
         }
     
    +    result match {
    +      case fs: HadoopFsRelation if table.partitionColumnNames.nonEmpty &&
    +          sparkSession.sqlContext.conf.manageFilesourcePartitions =>
    +        // Need to recover partitions into the metastore so our saved data 
is visible.
    +        sparkSession.sessionState.executePlan(
    +          AlterTableRecoverPartitionsCommand(table.identifier)).toRdd
    --- End diff --
    
    I just double checked with `create table test_sel2 USING parquet 
PARTITIONED BY (fieldone, fieldtwo) AS SELECT id as fieldzero, id as fieldone, 
id as fieldtwo from range(100)` and it is using a different path, so the 
recovery is not duplicated.


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