/// <summary>
/// Returns all of Rows in this DataFrame
/// </summary>
public IEnumerable <Row> Collect()
{
if (rowSchema == null)
{
rowSchema = RowSchema.ParseRowSchemaFromJson(Schema.ToJson());
}
IRDDProxy rddProxy = dataFrameProxy.JavaToCSharp();
RDD <Row> rdd = new RDD <Row>(rddProxy, sparkContext, SerializedMode.Row);
int port = rddProxy.CollectAndServe();
foreach (var item in rdd.Collect(port))
{
yield return(new RowImpl(item, rowSchema));
}
}