[GitHub] spark pull request: [SPARK-10630][SQL] Add a createDataFrame API t...

[mengxr <gi...@git.apache.org>]

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

    https://github.com/apache/spark/pull/8779#discussion_r39936067
  
    --- Diff: sql/core/src/main/scala/org/apache/spark/sql/SQLContext.scala ---
    @@ -477,6 +477,20 @@ class SQLContext(@transient val sparkContext: SparkContext)
       }
     
       /**
    +   * :: DeveloperApi ::
    +   * Creates a [[DataFrame]] from an [[java.util.List]] containing [[Row]]s using the given schema.
    +   * It is important to make sure that the structure of every [[Row]] of the provided List matches
    +   * the provided schema. Otherwise, there will be runtime exception.
    +   *
    +   * @group dataframes
    +   * @since 1.6.0
    +   */
    +  @DeveloperApi
    +  def createDataFrame(rows: java.util.List[Row], schema: StructType): DataFrame = {
    +    createDataFrame(sparkContext.parallelize(rows.asScala), schema)
    --- End diff --
    
    Should create a local DataFrame using `LocalRelation`. See https://github.com/holdenk/spark/blob/SPARK-10630-create-DataFrame-from-Java-List/sql/core/src/main/scala/org/apache/spark/sql/SQLContext.scala#L385.


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