Examples of SnapshotDeletionPolicy

org.apache.lucene.index.SnapshotDeletionPolicy
A {@link IndexDeletionPolicy} that wraps around any other{@link IndexDeletionPolicy} and adds the ability to hold andlater release a single "snapshot" of an index. While the snapshot is held, the {@link IndexWriter} will notremove any files associated with it even if the index is otherwise being actively, arbitrarily changed. Because we wrap another arbitrary {@link IndexDeletionPolicy}, this gives you the freedom to continue using whatever {@link IndexDeletionPolicy} you would normally want to use with yourindex. Note that you can re-use a single instance of SnapshotDeletionPolicy across multiple writers as long as they are against the same index Directory. Any snapshot held when a writer is closed will "survive" when the next writer is opened.
WARNING: This API is a new and experimental and may suddenly change.
org.elasticsearch.index.deletionpolicy.SnapshotDeletionPolicy
Snapshot deletion policy allows to get snapshots of an index state (last commit or all commits) and if the deletion policy is used with all open index writers (JVM level) then the snapshot state will not be deleted until it will be released. @author kimchy (shay.banon)

Examples of org.apache.lucene.index.SnapshotDeletionPolicy

  public void testExistingSnapshots() throws Exception {
    // Tests the ability to construct a SDP from existing snapshots, and
    // asserts that those snapshots/commit points are protected.
    int numSnapshots = 3;
    Directory dir = newDirectory();
    SnapshotDeletionPolicy sdp = getDeletionPolicy();
    IndexWriter writer = new IndexWriter(dir, getConfig(random, sdp));
    prepareIndexAndSnapshots(sdp, writer, numSnapshots, "snapshot");
    writer.close();


    // Make a new policy and initialize with snapshots.
    sdp = getDeletionPolicy(sdp.getSnapshots());
    writer = new IndexWriter(dir, getConfig(random, sdp));
    // attempt to delete unused files - the snapshotted files should not be deleted
    writer.deleteUnusedFiles();
    writer.close();
    assertSnapshotExists(dir, sdp, numSnapshots);

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Examples of org.apache.lucene.index.SnapshotDeletionPolicy

    callback = new IndexReadyCallback(handlerDir);
    handler = new IndexReplicationHandler(handlerDir, callback);
    client = new ReplicationClient(replicator, handler, sourceDirFactory);
    
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, null);
    conf.setIndexDeletionPolicy(new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy()));
    publishWriter = new IndexWriter(publishDir, conf);
  }

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Examples of org.apache.lucene.index.SnapshotDeletionPolicy

    callback = new IndexAndTaxonomyReadyCallback(handlerIndexDir, handlerTaxoDir);
    handler = new IndexAndTaxonomyReplicationHandler(handlerIndexDir, handlerTaxoDir, callback);
    client = new ReplicationClient(replicator, handler, sourceDirFactory);
    
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, null);
    conf.setIndexDeletionPolicy(new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy()));
    publishIndexWriter = new IndexWriter(publishIndexDir, conf);
    publishTaxoWriter = new SnapshotDirectoryTaxonomyWriter(publishTaxoDir);
  }

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Examples of org.apache.lucene.index.SnapshotDeletionPolicy

  @Override
  public void setUp() throws Exception {
    super.setUp();
    sourceDir = newDirectory();
    IndexWriterConfig conf = newIndexWriterConfig(TEST_VERSION_CURRENT, null);
    conf.setIndexDeletionPolicy(new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy()));
    sourceWriter = new IndexWriter(sourceDir, conf);
    replicator = new LocalReplicator();
  }

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Examples of org.apache.lucene.index.SnapshotDeletionPolicy

    }
    
    @Override
    protected IndexWriterConfig createIndexWriterConfig(OpenMode openMode) {
      IndexWriterConfig conf = super.createIndexWriterConfig(openMode);
      sdp = new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy());
      conf.setIndexDeletionPolicy(sdp);
      return conf;
    }

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Examples of org.apache.lucene.index.SnapshotDeletionPolicy

  
  @Test
  public void testNoCommit() throws Exception {
    Directory indexDir = newDirectory();
    IndexWriterConfig conf = new IndexWriterConfig(TEST_VERSION_CURRENT, null);
    conf.setIndexDeletionPolicy(new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy()));
    IndexWriter indexWriter = new IndexWriter(indexDir, conf);
    
    Directory taxoDir = newDirectory();
    SnapshotDirectoryTaxonomyWriter taxoWriter = new SnapshotDirectoryTaxonomyWriter(taxoDir);
    try {

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Examples of org.apache.lucene.index.SnapshotDeletionPolicy

  
  @Test
  public void testRevisionRelease() throws Exception {
    Directory indexDir = newDirectory();
    IndexWriterConfig conf = new IndexWriterConfig(TEST_VERSION_CURRENT, null);
    conf.setIndexDeletionPolicy(new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy()));
    IndexWriter indexWriter = new IndexWriter(indexDir, conf);
    
    Directory taxoDir = newDirectory();
    SnapshotDirectoryTaxonomyWriter taxoWriter = new SnapshotDirectoryTaxonomyWriter(taxoDir);
    try {

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Examples of org.apache.lucene.index.SnapshotDeletionPolicy

  
  @Test
  public void testSegmentsFileLast() throws Exception {
    Directory indexDir = newDirectory();
    IndexWriterConfig conf = new IndexWriterConfig(TEST_VERSION_CURRENT, null);
    conf.setIndexDeletionPolicy(new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy()));
    IndexWriter indexWriter = new IndexWriter(indexDir, conf);
    
    Directory taxoDir = newDirectory();
    SnapshotDirectoryTaxonomyWriter taxoWriter = new SnapshotDirectoryTaxonomyWriter(taxoDir);
    try {

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Examples of org.apache.lucene.index.SnapshotDeletionPolicy

  
  @Test
  public void testOpen() throws Exception {
    Directory indexDir = newDirectory();
    IndexWriterConfig conf = new IndexWriterConfig(TEST_VERSION_CURRENT, null);
    conf.setIndexDeletionPolicy(new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy()));
    IndexWriter indexWriter = new IndexWriter(indexDir, conf);
    
    Directory taxoDir = newDirectory();
    SnapshotDirectoryTaxonomyWriter taxoWriter = new SnapshotDirectoryTaxonomyWriter(taxoDir);
    try {

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Examples of org.apache.lucene.index.SnapshotDeletionPolicy

  
  @Test
  public void testNoCommit() throws Exception {
    Directory dir = newDirectory();
    IndexWriterConfig conf = new IndexWriterConfig(TEST_VERSION_CURRENT, null);
    conf.setIndexDeletionPolicy(new SnapshotDeletionPolicy(conf.getIndexDeletionPolicy()));
    IndexWriter writer = new IndexWriter(dir, conf);
    try {
      assertNotNull(new IndexRevision(writer));
      fail("should have failed when there are no commits to snapshot");
    } catch (IllegalStateException e) {

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