@Override
protected void deleteDocuments(Term id) throws Exception {
final long gen = genWriter.deleteDocuments(id);
// randomly verify the delete "took":
if (random().nextInt(20) == 7) {
if (VERBOSE) {
System.out.println(Thread.currentThread().getName() + ": nrt: verify del " + id);
}
nrtDeletesThread.waitForGeneration(gen);
final IndexSearcher s = nrtDeletes.acquire();
if (VERBOSE) {
System.out.println(Thread.currentThread().getName() + ": nrt: got searcher=" + s);
}
try {
assertEquals(0, s.search(new TermQuery(id), 10).totalHits);
} finally {
nrtDeletes.release(s);
}
}
lastGens.set(gen);
}
@Override
protected void addDocument(Term id, Iterable<? extends IndexableField> doc) throws Exception {
final long gen = genWriter.addDocument(doc);
// Randomly verify the add "took":
if (random().nextInt(20) == 2) {
if (VERBOSE) {
System.out.println(Thread.currentThread().getName() + ": nrt: verify " + id);
}
nrtNoDeletesThread.waitForGeneration(gen);
final IndexSearcher s = nrtNoDeletes.acquire();
if (VERBOSE) {
System.out.println(Thread.currentThread().getName() + ": nrt: got searcher=" + s);
}
try {
assertEquals(1, s.search(new TermQuery(id), 10).totalHits);
} finally {
nrtNoDeletes.release(s);
}
}
lastGens.set(gen);
}
// Relies on wall clock time, so it can easily false-fail when the machine is otherwise busy:
@AwaitsFix(bugUrl = "https://issues.apache.org/jira/browse/LUCENE-5737")
// LUCENE-5461
public void testCRTReopen() throws Exception {
// test behaving badly
// should be high enough
int maxStaleSecs = 20;
// build crap data just to store it.
String s = " abcdefghijklmnopqrstuvwxyz ";
char[] chars = s.toCharArray();
StringBuilder builder = new StringBuilder(2048);
for (int i = 0; i < 2048; i++) {
builder.append(chars[random().nextInt(chars.length)]);
}
String content = builder.toString();
final SnapshotDeletionPolicy sdp =
new SnapshotDeletionPolicy(new KeepOnlyLastCommitDeletionPolicy());
final Directory dir = new NRTCachingDirectory(newFSDirectory(createTempDir("nrt")), 5, 128);
IndexWriterConfig config =
new IndexWriterConfig(Version.LUCENE_4_6, new MockAnalyzer(random()));
config.setIndexDeletionPolicy(sdp);
config.setOpenMode(IndexWriterConfig.OpenMode.CREATE_OR_APPEND);
final IndexWriter iw = new IndexWriter(dir, config);
SearcherManager sm = new SearcherManager(iw, true, new SearcherFactory());
final TrackingIndexWriter tiw = new TrackingIndexWriter(iw);
ControlledRealTimeReopenThread<IndexSearcher> controlledRealTimeReopenThread =
new ControlledRealTimeReopenThread<>(tiw, sm, maxStaleSecs, 0);
controlledRealTimeReopenThread.setDaemon(true);
controlledRealTimeReopenThread.start();
List<Thread> commitThreads = new ArrayList<>();
for (int i = 0; i < 500; i++) {
if (i > 0 && i % 50 == 0) {
Thread commitThread =
new Thread(
new Runnable() {
@Override
public void run() {
try {
iw.commit();
IndexCommit ic = sdp.snapshot();
for (String name : ic.getFileNames()) {
// distribute, and backup
// System.out.println(names);
assertTrue(slowFileExists(dir, name));
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
});
commitThread.start();
commitThreads.add(commitThread);
}
Document d = new Document();
d.add(new TextField("count", i + "", Field.Store.NO));
d.add(new TextField("content", content, Field.Store.YES));
long start = System.currentTimeMillis();
long l = tiw.addDocument(d);
controlledRealTimeReopenThread.waitForGeneration(l);
long wait = System.currentTimeMillis() - start;
assertTrue("waited too long for generation " + wait, wait < (maxStaleSecs * 1000));
IndexSearcher searcher = sm.acquire();
TopDocs td = searcher.search(new TermQuery(new Term("count", i + "")), 10);
sm.release(searcher);
assertEquals(1, td.totalHits);
}
for (Thread commitThread : commitThreads) {
commitThread.join();
}
controlledRealTimeReopenThread.close();
sm.close();
iw.close();
dir.close();
}
/*
* LUCENE-3528 - NRTManager hangs in certain situations
*/
public void testThreadStarvationNoDeleteNRTReader() throws IOException, InterruptedException {
IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random()));
conf.setMergePolicy(NoMergePolicy.INSTANCE);
Directory d = newDirectory();
final CountDownLatch latch = new CountDownLatch(1);
final CountDownLatch signal = new CountDownLatch(1);
LatchedIndexWriter _writer = new LatchedIndexWriter(d, conf, latch, signal);
final TrackingIndexWriter writer = new TrackingIndexWriter(_writer);
final SearcherManager manager = new SearcherManager(_writer, false, null);
Document doc = new Document();
doc.add(newTextField("test", "test", Field.Store.YES));
writer.addDocument(doc);
manager.maybeRefresh();
Thread t =
new Thread() {
@Override
public void run() {
try {
signal.await();
manager.maybeRefresh();
writer.deleteDocuments(new TermQuery(new Term("foo", "barista")));
manager.maybeRefresh(); // kick off another reopen so we inc. the internal gen
} catch (Exception e) {
e.printStackTrace();
} finally {
latch.countDown(); // let the add below finish
}
}
};
t.start();
_writer.waitAfterUpdate = true; // wait in addDocument to let some reopens go through
final long lastGen =
writer.updateDocument(
new Term("foo", "bar"),
doc); // once this returns the doc is already reflected in the last reopen
assertFalse(manager.isSearcherCurrent()); // false since there is a delete in the queue
IndexSearcher searcher = manager.acquire();
try {
assertEquals(2, searcher.getIndexReader().numDocs());
} finally {
manager.release(searcher);
}
final ControlledRealTimeReopenThread<IndexSearcher> thread =
new ControlledRealTimeReopenThread<>(writer, manager, 0.01, 0.01);
thread.start(); // start reopening
if (VERBOSE) {
System.out.println("waiting now for generation " + lastGen);
}
final AtomicBoolean finished = new AtomicBoolean(false);
Thread waiter =
new Thread() {
@Override
public void run() {
try {
thread.waitForGeneration(lastGen);
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
throw new RuntimeException(ie);
}
finished.set(true);
}
};
waiter.start();
manager.maybeRefresh();
waiter.join(1000);
if (!finished.get()) {
waiter.interrupt();
fail("thread deadlocked on waitForGeneration");
}
thread.close();
thread.join();
IOUtils.close(manager, _writer, d);
}