public void TestSignaturesV3_X_X()
{
// Validate ToLocalIterator
var data = new List <GenericRow>
{
new GenericRow(new object[] { "Alice", 20 }),
new GenericRow(new object[] { "Bob", 30 })
};
var schema = new StructType(new List <StructField>()
{
new StructField("Name", new StringType()),
new StructField("Age", new IntegerType())
});
DataFrame df = _spark.CreateDataFrame(data, schema);
IEnumerable <Row> actual = df.ToLocalIterator(true).ToArray();
IEnumerable <Row> expected = data.Select(r => new Row(r.Values, schema));
Assert.Equal(expected, actual);
Assert.IsType <DataFrame>(df.Observe("metrics", Count("Name").As("CountNames")));
Assert.IsType <Row[]>(_df.Tail(1).ToArray());
_df.PrintSchema(1);
_df.Explain("simple");
_df.Explain("extended");
_df.Explain("codegen");
_df.Explain("cost");
_df.Explain("formatted");
}