Package org.apache.accumulo.core.client

Examples of org.apache.accumulo.core.client.IteratorSetting

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    SortedKeyValueIterator<Key,Value> source2 = createIteratorStack(NUM_ROWS, NUM_DOCIDS, columnFamilies, otherColumnFamilies, docs);
    ArrayList<SortedKeyValueIterator<Key,Value>> sourceIters = new ArrayList<SortedKeyValueIterator<Key,Value>>();
    sourceIters.add(source);
    sourceIters.add(source2);
    MultiIterator mi = new MultiIterator(sourceIters, false);
    IteratorSetting is = new IteratorSetting(1, IntersectingIterator.class);
    IntersectingIterator.setColumnFamilies(is, columnFamilies);
    IntersectingIterator iter = new IntersectingIterator();
    iter.init(mi, is.getOptions(), env);
    iter.seek(new Range(), EMPTY_COL_FAMS, false);
    int hitCount = 0;
    while (iter.hasTop()) {
      hitCount++;
      Key k = iter.getTopKey();
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    otherColumnFamilies[2] = new Text("D");
    otherColumnFamilies[3] = new Text("F");
   
    hitRatio = 0.5f;
    SortedKeyValueIterator<Key,Value> source = createIteratorStack(NUM_ROWS, NUM_DOCIDS, columnFamilies, otherColumnFamilies, docs, negatedColumns);
    IteratorSetting is = new IteratorSetting(1, IntersectingIterator.class);
    IntersectingIterator.setColumnFamilies(is, columnFamilies, notFlags);
    IntersectingIterator iter = new IntersectingIterator();
    iter.init(source, is.getOptions(), env);
    iter.seek(new Range(), EMPTY_COL_FAMS, false);
    int hitCount = 0;
    while (iter.hasTop()) {
      hitCount++;
      Key k = iter.getTopKey();
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    m.put("15qh", "5000000000000000", empty);
    bw.addMutation(m);
    bw.close();
   
    BatchScanner bs = connector.createBatchScanner("index", Constants.NO_AUTHS, 10);
    IteratorSetting ii = new IteratorSetting(20, IntersectingIterator.class);
    IntersectingIterator.setColumnFamilies(ii, new Text[] {new Text("rvy"), new Text("15qh")});
    bs.addScanIterator(ii);
    bs.setRanges(Collections.singleton(new Range()));
    Iterator<Entry<Key,Value>> iterator = bs.iterator();
    Assert.assertTrue(iterator.hasNext());
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  @Test
  public void testAddIterator() {
    JobContext job = ContextFactory.createJobContext();

    AccumuloInputFormat.addIterator(job.getConfiguration(), new IteratorSetting(1, "WholeRow", WholeRowIterator.class));
    AccumuloInputFormat.addIterator(job.getConfiguration(), new IteratorSetting(2, "Versions", "org.apache.accumulo.core.iterators.VersioningIterator"));
    IteratorSetting iter = new IteratorSetting(3, "Count", "org.apache.accumulo.core.iterators.CountingIterator");
    iter.addOption("v1", "1");
    iter.addOption("junk", "\0omg:!\\xyzzy");
    AccumuloInputFormat.addIterator(job.getConfiguration(), iter);

    List<AccumuloIterator> list = AccumuloInputFormat.getIterators(job.getConfiguration());

    // Check the list size
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   */
  @Test
  public void testIteratorOptionEncoding() throws Throwable {
    String key = "colon:delimited:key";
    String value = "comma,delimited,value";
    IteratorSetting someSetting = new IteratorSetting(1, "iterator", "Iterator.class");
    someSetting.addOption(key, value);
    Job job = new Job();
    AccumuloInputFormat.addIterator(job.getConfiguration(), someSetting);

    final String rawConfigOpt = new AccumuloIteratorOption("iterator", key, value).toString();

    assertEquals(rawConfigOpt, job.getConfiguration().get("AccumuloInputFormat.iterators.options"));

    List<AccumuloIteratorOption> opts = AccumuloInputFormat.getIteratorOptions(job.getConfiguration());
    assertEquals(1, opts.size());
    assertEquals(opts.get(0).getKey(), key);
    assertEquals(opts.get(0).getValue(), value);

    someSetting.addOption(key + "2", value);
    someSetting.setPriority(2);
    someSetting.setName("it2");
    AccumuloInputFormat.addIterator(job.getConfiguration(), someSetting);
    opts = AccumuloInputFormat.getIteratorOptions(job.getConfiguration());
    assertEquals(3, opts.size());
    for (AccumuloIteratorOption opt : opts) {
      assertEquals(opt.getKey().substring(0, key.length()), key);
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    scanner.fetchColumnFamily(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY);
    scanner.fetchColumnFamily(Constants.METADATA_FUTURE_LOCATION_COLUMN_FAMILY);
    scanner.fetchColumnFamily(Constants.METADATA_LAST_LOCATION_COLUMN_FAMILY);
    scanner.fetchColumnFamily(Constants.METADATA_LOG_COLUMN_FAMILY);
    scanner.fetchColumnFamily(Constants.METADATA_CHOPPED_COLUMN_FAMILY);
    scanner.addScanIterator(new IteratorSetting(1000, "wholeRows", WholeRowIterator.class));
    IteratorSetting tabletChange = new IteratorSetting(1001, "tabletChange", TabletStateChangeIterator.class);
    if (state != null) {
      TabletStateChangeIterator.setCurrentServers(tabletChange, state.onlineTabletServers());
      TabletStateChangeIterator.setOnlineTables(tabletChange, state.onlineTables());
      TabletStateChangeIterator.setMerges(tabletChange, state.merges());
    }
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      Connector conn = instance.getConnector(SecurityConstants.getSystemCredentials());
      BatchScanner bs = conn.createBatchScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS, 8);
      try {
        bs.setRanges(Collections.singleton(Constants.NON_ROOT_METADATA_KEYSPACE));
        bs.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
        IteratorSetting cfg = new IteratorSetting(40, "grep", GrepIterator.class);
        GrepIterator.setTerm(cfg, "../" + tableId + "/");
        bs.addScanIterator(cfg);
       
        for (Entry<Key,Value> entry : bs) {
          if (entry.getKey().getColumnQualifier().toString().startsWith("../" + tableId + "/")) {
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  public void testAggregation() throws Exception {
    MockInstance mockInstance = new MockInstance();
    Connector c = mockInstance.getConnector("root", new byte[] {});
    String table = "perDayCounts";
    c.tableOperations().create(table);
    IteratorSetting is = new IteratorSetting(10, "String Summation", SummingCombiner.class);
    Combiner.setColumns(is, Collections.singletonList(new IteratorSetting.Column("day")));
    SummingCombiner.setEncodingType(is, SummingCombiner.Type.STRING);
    c.tableOperations().attachIterator(table, is);
    String keys[][] = { {"foo", "day", "20080101"}, {"foo", "day", "20080101"}, {"foo", "day", "20080103"}, {"bar", "day", "20080101"},
        {"bar", "day", "20080101"},};
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    nkv(tm1, 1, 1, 1, 2, false, 3l, encoder);
    nkv(tm1, 1, 1, 1, 3, false, 4l, encoder);
   
    Combiner ai = new SummingCombiner();
   
    IteratorSetting is = new IteratorSetting(1, SummingCombiner.class);
    LongCombiner.setEncodingType(is, SummingCombiner.Type.VARLEN);
    Combiner.setColumns(is, Collections.singletonList(new IteratorSetting.Column("2")));
   
    ai.init(new SortedMapIterator(tm1), is.getOptions(), null);
    ai.seek(new Range(), EMPTY_COL_FAMS, false);
   
    assertTrue(ai.hasTop());
    assertEquals(nk(1, 1, 1, 3), ai.getTopKey());
    assertEquals("4", encoder.decode(ai.getTopValue().get()).toString());
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    nkv(tm1, 1, 1, 1, 2, false, 3l, encoder);
    nkv(tm1, 1, 1, 1, 3, false, 4l, encoder);
   
    Combiner ai = new SummingCombiner();
   
    IteratorSetting is = new IteratorSetting(1, SummingCombiner.class);
    LongCombiner.setEncodingType(is, VarLenEncoder.class);
    Combiner.setColumns(is, Collections.singletonList(new IteratorSetting.Column("cf001")));
   
    ai.init(new SortedMapIterator(tm1), is.getOptions(), null);
    ai.seek(new Range(), EMPTY_COL_FAMS, false);
   
    assertTrue(ai.hasTop());
    assertEquals(nk(1, 1, 1, 3), ai.getTopKey());
    assertEquals("9", encoder.decode(ai.getTopValue().get()).toString());
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