Lucene.Net.Index.IndexWriter.SetMergeScheduler C# (CSharp) Method

		public virtual void  SetMergeScheduler(MergeScheduler mergeScheduler)
		{
			lock (this)
			{
				EnsureOpen();
				if (mergeScheduler == null)
					throw new System.NullReferenceException("MergeScheduler must be non-null");
				
				if (this.mergeScheduler != mergeScheduler)
				{
					FinishMerges(true);
					this.mergeScheduler.Close();
				}
				this.mergeScheduler = mergeScheduler;
				if (infoStream != null)
				{
					Message("setMergeScheduler " + mergeScheduler);
				}
			}
		}

        public virtual void  TestNoExtraFiles()
        {
            RAMDirectory directory = new MockRAMDirectory();

            for (int pass = 0; pass < 2; pass++)
            {
                bool        autoCommit = pass == 0;
                IndexWriter writer     = new IndexWriter(directory, autoCommit, ANALYZER, true);

                for (int iter = 0; iter < 7; iter++)
                {
                    ConcurrentMergeScheduler cms = new ConcurrentMergeScheduler();
                    writer.SetMergeScheduler(cms);
                    writer.SetMaxBufferedDocs(2);

                    for (int j = 0; j < 21; j++)
                    {
                        Document doc = new Document();
                        doc.Add(new Field("content", "a b c", Field.Store.NO, Field.Index.ANALYZED));
                        writer.AddDocument(doc);
                    }

                    writer.Close();
                    TestIndexWriter.AssertNoUnreferencedFiles(directory, "testNoExtraFiles autoCommit=" + autoCommit);

                    // Reopen
                    writer = new IndexWriter(directory, autoCommit, ANALYZER, false);
                }

                writer.Close();
            }

            directory.Close();
        }