public virtual void TestForceMergeNotNeeded()
{
Directory dir = NewDirectory();
AtomicBoolean mayMerge = new AtomicBoolean(true);
MergeScheduler mergeScheduler = new SerialMergeSchedulerAnonymousInnerClassHelper(this, mayMerge);
IndexWriter writer = new IndexWriter(dir, NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random())).SetMergeScheduler(mergeScheduler).SetMergePolicy(MergePolicy()));
writer.Config.MergePolicy.NoCFSRatio = Random().NextBoolean() ? 0 : 1;
int numSegments = TestUtil.NextInt(Random(), 2, 20);
for (int i = 0; i < numSegments; ++i)
{
int numDocs = TestUtil.NextInt(Random(), 1, 5);
for (int j = 0; j < numDocs; ++j)
{
writer.AddDocument(new Document());
}
writer.Reader.Dispose();
}
for (int i = 5; i >= 0; --i)
{
int segmentCount = writer.SegmentCount;
int maxNumSegments = i == 0 ? 1 : TestUtil.NextInt(Random(), 1, 10);
mayMerge.Set(segmentCount > maxNumSegments);
writer.ForceMerge(maxNumSegments);
}
writer.Dispose();
dir.Dispose();
}
public virtual void Test()
{
Directory d = NewDirectory();
MockAnalyzer analyzer = new MockAnalyzer(Random());
analyzer.MaxTokenLength = TestUtil.NextInt(Random(), 1, IndexWriter.MAX_TERM_LENGTH);
MyIndexWriter w = new MyIndexWriter(d, NewIndexWriterConfig(TEST_VERSION_CURRENT, analyzer));
// Try to make an index that requires merging:
w.Config.SetMaxBufferedDocs(TestUtil.NextInt(Random(), 2, 11));
int numStartDocs = AtLeast(20);
LineFileDocs docs = new LineFileDocs(Random(), DefaultCodecSupportsDocValues());
for (int docIDX = 0; docIDX < numStartDocs; docIDX++)
{
w.AddDocument(docs.NextDoc());
}
MergePolicy mp = w.Config.MergePolicy;
int mergeAtOnce = 1 + w.GetSegmentInfosSize_Nunit();
if (mp is TieredMergePolicy)
{
((TieredMergePolicy)mp).MaxMergeAtOnce = mergeAtOnce;
}
else if (mp is LogMergePolicy)
{
((LogMergePolicy)mp).MergeFactor = mergeAtOnce;
}
else
{
// skip test
w.Dispose();
d.Dispose();
return;
}
AtomicBoolean doStop = new AtomicBoolean();
w.Config.SetMaxBufferedDocs(2);
ThreadClass t = new ThreadAnonymousInnerClassHelper(this, w, numStartDocs, docs, doStop);
t.Start();
w.ForceMerge(1);
doStop.Set(true);
t.Join();
Assert.IsTrue(w.MergeCount.Get() <= 1, "merge count is " + w.MergeCount.Get());
w.Dispose();
d.Dispose();
docs.Dispose();
}
public virtual void TestNRTOpenExceptions()
{
// LUCENE-5262: test that several failed attempts to obtain an NRT reader
// don't leak file handles.
MockDirectoryWrapper dir = (MockDirectoryWrapper)GetAssertNoDeletesDirectory(NewMockDirectory());
AtomicBoolean shouldFail = new AtomicBoolean();
dir.FailOn(new FailureAnonymousInnerClassHelper(this, dir, shouldFail));
IndexWriterConfig conf = NewIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(Random()));
conf.SetMergePolicy(NoMergePolicy.COMPOUND_FILES); // prevent merges from getting in the way
IndexWriter writer = new IndexWriter(dir, conf);
// create a segment and open an NRT reader
writer.AddDocument(new Document());
writer.Reader.Dispose();
// add a new document so a new NRT reader is required
writer.AddDocument(new Document());
// try to obtain an NRT reader twice: first time it fails and closes all the
// other NRT readers. second time it fails, but also fails to close the
// other NRT reader, since it is already marked closed!
for (int i = 0; i < 2; i++)
{
shouldFail.Set(true);
try
{
writer.Reader.Dispose();
}
catch (FakeIOException e)
{
// expected
if (VERBOSE)
{
Console.WriteLine("hit expected fake IOE");
}
}
}
writer.Dispose();
dir.Dispose();
}