public void TestSignaturesV2_3_X()
{
SparkContext sc = SparkContext.GetOrCreate(new SparkConf());
Assert.IsType <SparkConf>(sc.GetConf());
Assert.IsType <int>(sc.DefaultParallelism);
sc.SetJobDescription("job description");
sc.SetLogLevel("ALL");
sc.SetLogLevel("debug");
Assert.Throws <Exception>(() => sc.SetLogLevel("INVALID"));
sc.SetJobGroup("group id", "description");
sc.SetJobGroup("group id", "description", true);
sc.ClearJobGroup();
string filePath = $"{TestEnvironment.ResourceDirectory}people.txt";
sc.AddFile(filePath);
sc.AddFile(filePath, true);
Assert.IsType <string[]>(sc.ListFiles().ToArray());
using var tempDir = new TemporaryDirectory();
sc.SetCheckpointDir(TestEnvironment.ResourceDirectory);
Assert.IsType <string>(sc.GetCheckpointDir());
Assert.IsType <Configuration>(sc.HadoopConfiguration());
}