Examples of org.apache.lucene.store.MockDirectoryWrapper.failOn()

Class org.apache.lucene.store.MockDirectoryWrapper

Examples of org.apache.lucene.store.MockDirectoryWrapper.failOn()

org.apache.lucene.store.MockDirectoryWrapper.failOn()
add a Failure object to the list of objects to be evaluated at every potential failure point

    int docBase = 0;
    int docCount = 0;


    MockDirectoryWrapper dir = newMockDirectory();
    final AtomicBoolean shouldFail = new AtomicBoolean();
    dir.failOn(new MockDirectoryWrapper.Failure() {
      
      @Override
      public void eval(MockDirectoryWrapper dir) throws IOException {
        StackTraceElement[] trace = new Exception().getStackTrace();
        if (shouldFail.get() == false) {

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  public void testRandomExceptionDuringRollback() throws Exception {
    // fail in random places on i/o
    final int numIters = RANDOM_MULTIPLIER * 75;
    for (int iter = 0; iter < numIters; iter++) {
      MockDirectoryWrapper dir = newMockDirectory();
      dir.failOn(new MockDirectoryWrapper.Failure() {
        
        @Override
        public void eval(MockDirectoryWrapper dir) throws IOException {
          boolean maybeFail = false;
          StackTraceElement[] trace = new Exception().getStackTrace();

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  public void testNRTOpenExceptions() throws Exception {
    // LUCENE-5262: test that several failed attempts to obtain an NRT reader
    // don't leak file handles.
    MockDirectoryWrapper dir = (MockDirectoryWrapper) getAssertNoDeletesDirectory(newMockDirectory());
    final AtomicBoolean shouldFail = new AtomicBoolean();
    dir.failOn(new MockDirectoryWrapper.Failure() {
      @Override
      public void eval(MockDirectoryWrapper dir) throws IOException {
        StackTraceElement[] trace = new Exception().getStackTrace();
        if (shouldFail.get()) {
          for (int i = 0; i < trace.length; i++) {

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  // one segment only takes out those docs in that one flush
  public void testDocumentsWriterAbort() throws IOException {
    MockDirectoryWrapper dir = newDirectory();
    FailOnlyOnFlush failure = new FailOnlyOnFlush();
    failure.setDoFail();
    dir.failOn(failure);


    IndexWriter writer = new IndexWriter(dir, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)).setMaxBufferedDocs(2));
    Document doc = new Document();
    String contents = "aa bb cc dd ee ff gg hh ii jj kk";
    doc.add(newField("content", contents, Field.Store.NO,

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  // LUCENE-1044: test exception during sync
  public void testExceptionDuringSync() throws IOException {
    MockDirectoryWrapper dir = newDirectory();
    FailOnlyInSync failure = new FailOnlyInSync();
    dir.failOn(failure);


    IndexWriter writer = new IndexWriter(
        dir,
        newIndexWriterConfig(TEST_VERSION_CURRENT, new MockAnalyzer(random)).
            setMaxBufferedDocs(2).

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    IndexWriter w = new IndexWriter(dir, newIndexWriterConfig( TEST_VERSION_CURRENT, new MockAnalyzer(random)));
    Document doc = new Document();
    doc.add(newField("field", "a field", Field.Store.YES,
                      Field.Index.ANALYZED));
    w.addDocument(doc);
    dir.failOn(failure);
    try {
      w.close();
      fail();
    } catch (IOException ioe) {
      fail("expected only RuntimeException");

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    w.addDocument(doc);
    
    // disk fills up!
    FailTwiceDuringMerge ftdm = new FailTwiceDuringMerge();
    ftdm.setDoFail();
    dir.failOn(ftdm);


    try {
      w.commit();
      fail("fake disk full IOExceptions not hit");
    } catch (IOException ioe) {

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      for(int i=0;i<NUM_THREADS;i++)
        threads[i].start();


      Thread.sleep(10);


      dir.failOn(failure);
      failure.setDoFail();


      for(int i=0;i<NUM_THREADS;i++) {
        threads[i].join();
        assertTrue("hit unexpected Throwable", threads[i].error == null);

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    doc.add(newField("field", "aaa bbb ccc ddd eee fff ggg hhh iii jjj", Field.Store.YES, Field.Index.ANALYZED, Field.TermVector.WITH_POSITIONS_OFFSETS));


    for(int i=0;i<6;i++)
      writer.addDocument(doc);


    dir.failOn(failure);
    failure.setDoFail();
    try {
      writer.addDocument(doc);
      writer.addDocument(doc);
      writer.commit();

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    modifier.setInfoStream(VERBOSE ? System.out : null);


    LogMergePolicy lmp = (LogMergePolicy) modifier.getConfig().getMergePolicy();
    lmp.setUseCompoundFile(true);


    dir.failOn(failure.reset());


    for (int i = 0; i < keywords.length; i++) {
      Document doc = new Document();
      doc.add(newField("id", keywords[i], Field.Store.YES,
                        Field.Index.NOT_ANALYZED));

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