/// <exception cref="System.Exception"/>
        public virtual void TestNumInputs()
        {
            JobConf job = new JobConf(conf);

            dfs = NewDFSCluster(job);
            FileSystem fs = dfs.GetFileSystem();

            System.Console.Out.WriteLine("FileSystem " + fs.GetUri());
            Path   inputDir     = new Path("/foo/");
            int    numFiles     = 10;
            string fileNameBase = "part-0000";

            for (int i = 0; i < numFiles; ++i)
            {
                CreateInputs(fs, inputDir, fileNameBase + i.ToString());
            }
            CreateInputs(fs, inputDir, "_meta");
            CreateInputs(fs, inputDir, "_temp");
            // split it using a file input format
            TextInputFormat.AddInputPath(job, inputDir);
            TextInputFormat inFormat = new TextInputFormat();

            inFormat.Configure(job);
            InputSplit[] splits = inFormat.GetSplits(job, 1);
            NUnit.Framework.Assert.AreEqual("Expected value of " + FileInputFormat.NumInputFiles
                                            , numFiles, job.GetLong(FileInputFormat.NumInputFiles, 0));
        }
        /// <exception cref="System.Exception"/>
        public virtual void TestLocality()
        {
            JobConf job = new JobConf(conf);

            dfs = NewDFSCluster(job);
            FileSystem fs = dfs.GetFileSystem();

            System.Console.Out.WriteLine("FileSystem " + fs.GetUri());
            Path   inputDir = new Path("/foo/");
            string fileName = "part-0000";

            CreateInputs(fs, inputDir, fileName);
            // split it using a file input format
            TextInputFormat.AddInputPath(job, inputDir);
            TextInputFormat inFormat = new TextInputFormat();

            inFormat.Configure(job);
            InputSplit[] splits     = inFormat.GetSplits(job, 1);
            FileStatus   fileStatus = fs.GetFileStatus(new Path(inputDir, fileName));

            BlockLocation[] locations = fs.GetFileBlockLocations(fileStatus, 0, fileStatus.GetLen
                                                                     ());
            System.Console.Out.WriteLine("Made splits");
            // make sure that each split is a block and the locations match
            for (int i = 0; i < splits.Length; ++i)
            {
                FileSplit fileSplit = (FileSplit)splits[i];
                System.Console.Out.WriteLine("File split: " + fileSplit);
                foreach (string h in fileSplit.GetLocations())
                {
                    System.Console.Out.WriteLine("Location: " + h);
                }
                System.Console.Out.WriteLine("Block: " + locations[i]);
                NUnit.Framework.Assert.AreEqual(locations[i].GetOffset(), fileSplit.GetStart());
                NUnit.Framework.Assert.AreEqual(locations[i].GetLength(), fileSplit.GetLength());
                string[] blockLocs = locations[i].GetHosts();
                string[] splitLocs = fileSplit.GetLocations();
                NUnit.Framework.Assert.AreEqual(2, blockLocs.Length);
                NUnit.Framework.Assert.AreEqual(2, splitLocs.Length);
                NUnit.Framework.Assert.IsTrue((blockLocs[0].Equals(splitLocs[0]) && blockLocs[1].
                                               Equals(splitLocs[1])) || (blockLocs[1].Equals(splitLocs[0]) && blockLocs[0].Equals
                                                                             (splitLocs[1])));
            }
            NUnit.Framework.Assert.AreEqual("Expected value of " + FileInputFormat.NumInputFiles
                                            , 1, job.GetLong(FileInputFormat.NumInputFiles, 0));
        }