Package org.apache.accumulo.core.client

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

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    m.put("rvy", "5000000000000000", empty);
    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();
    assertTrue(iterator.hasNext());
    Entry<Key,Value> next = iterator.next();
    Key key = next.getKey();
    assertEquals(key.getColumnQualifier(), new Text("5000000000000000"));
    assertFalse(iterator.hasNext());
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    Scanner s = conn.createScanner("ret", Constants.NO_AUTHS);
    s.setRange(range);
    setRegexs(s, rowRegEx, cfRegEx, cqRegEx, valRegEx);
    runTest(s, rowRegEx, cfRegEx, cqRegEx, valRegEx, expected);
   
    BatchScanner bs = conn.createBatchScanner("ret", Constants.NO_AUTHS, 1);
    bs.setRanges(Collections.singletonList(range));
    setRegexs(bs, rowRegEx, cfRegEx, cqRegEx, valRegEx);
    runTest(bs, rowRegEx, cfRegEx, cqRegEx, valRegEx, expected);
    bs.close();
  }
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  private void verify(ByteArraySet nss, String... expected) throws Exception {
    Scanner scanner = getConnector().createScanner("vt", new Authorizations(nss));
    verify(scanner.iterator(), expected);
   
    BatchScanner bs = getConnector().createBatchScanner("vt", new Authorizations(nss), 3);
    bs.setRanges(Collections.singleton(new Range()));
    verify(bs.iterator(), expected);
    bs.close();
  }
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    Opts opts = new Opts();
    BatchScannerOpts bsOpts = new BatchScannerOpts();
    opts.parseArgs(Query.class.getName(), args, bsOpts);
   
    Connector conn = opts.getConnector();
    BatchScanner bs = conn.createBatchScanner(opts.tableName, opts.auths, bsOpts.scanThreads);
    bs.setTimeout(bsOpts.scanTimeout, TimeUnit.MILLISECONDS);
   
    Text columns[] = new Text[opts.terms.size()];
    int i = 0;
    for (String term : opts.terms) {
      columns[i++] = new Text(term);
    }
    IteratorSetting ii = new IteratorSetting(20, "ii", IntersectingIterator.class);
    IntersectingIterator.setColumnFamilies(ii, columns);
    bs.addScanIterator(ii);
    bs.setRanges(Collections.singleton(new Range()));
    for (Entry<Key,Value> entry : bs) {
      System.out.println("  " + entry.getKey().getColumnQualifier());
    }
   
  }
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      w.close();
    }
  }
 
  protected void assertVersionable(Connector c, String tableName, int size) throws TableNotFoundException {
    BatchScanner s = c.createBatchScanner(tableName, Constants.NO_AUTHS, 1);
    s.setRanges(Collections.singleton(Range.exact("row1", "cf", "cq")));
    int count = 0;
    for (Map.Entry<Key,Value> e : s) {
      Assert.assertEquals("row1", e.getKey().getRow().toString());
      Assert.assertEquals("cf", e.getKey().getColumnFamily().toString());
      Assert.assertEquals("cq", e.getKey().getColumnQualifier().toString());
      count++;
     
    }
    Assert.assertEquals(size, count);
    s.close();
  }
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    Scanner scanner = null;/*
                            * connector.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS); ColumnFQ.fetch(scanner,
                            * Constants.METADATA_LOCATION_COLUMN); ColumnFQ.fetch(scanner, Constants.METADATA_PREV_ROW_COLUMN);
                            */
   
    BatchScanner bs = connector.createBatchScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS, 1);
    bs.fetchColumnFamily(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY);
    Constants.METADATA_PREV_ROW_COLUMN.fetch(bs);
   
    bs.setRanges(ranges);
   
    // System.out.println(ranges);
   
    ScanStats stats = new ScanStats();
    for (int i = 0; i < numLoop; i++) {
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      Mutation m = new Mutation(asText(r));
      m.put(asText(random.nextInt()), asText(random.nextInt()), new Value(Integer.toHexString(r).getBytes()));
      bw.addMutation(m);
    }
    bw.close();
    BatchScanner s = c.createBatchScanner("test", Constants.NO_AUTHS, 2);
    s.setRanges(Collections.singletonList(new Range()));
    Key key = null;
    int count = 0;
    for (Entry<Key,Value> entry : s) {
      if (key != null)
        assertTrue(key.compareTo(entry.getKey()) < 0);
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  public static void main(String[] args) throws Exception {
    Opts opts = new Opts();
    BatchScannerOpts bsOpts = new BatchScannerOpts();
    opts.parseArgs(Query.class.getName(), args, bsOpts);
    Connector conn = opts.getConnector();
    BatchScanner bs = conn.createBatchScanner(opts.tableName, opts.auths, bsOpts.scanThreads);
    bs.setTimeout(bsOpts.scanTimeout, TimeUnit.MILLISECONDS);

    for (String entry : query(bs, opts.terms))
      System.out.println("  " + entry);
  }
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    ArrayList<Text[]> randTerms = findRandomTerms(conn.createScanner(opts.doc2Term, opts.auths), opts.numTerms);
   
    Random rand = new Random();
   
    BatchScanner bs = conn.createBatchScanner(opts.table, opts.auths, bsOpts.scanThreads);
    bs.setTimeout(bsOpts.scanTimeout, TimeUnit.MILLISECONDS);
   
    for (long i = 0; i < opts.iterations; i += 1) {
      Text[] columns = randTerms.get(rand.nextInt(randTerms.size()));
     
      bs.clearScanIterators();
      bs.clearColumns();
     
      IteratorSetting ii = new IteratorSetting(20, "ii", IntersectingIterator.class);
      IntersectingIterator.setColumnFamilies(ii, columns);
      bs.addScanIterator(ii);
      bs.setRanges(Collections.singleton(new Range()));
     
      long t1 = System.currentTimeMillis();
      int count = 0;
      for (@SuppressWarnings("unused")
      Entry<Key,Value> entry : bs) {
        count++;
      }
      long t2 = System.currentTimeMillis();
     
      System.out.printf("  %s %,d %6.3f%n", Arrays.asList(columns), count, (t2 - t1) / 1000.0);
    }
   
    bs.close();
   
  }
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    Opts opts = new Opts();
    BatchScannerOpts bsOpts = new BatchScannerOpts();
    opts.parseArgs(RandomBatchScanner.class.getName(), args, bsOpts);
   
    Connector connector = opts.getConnector();
    BatchScanner batchReader = connector.createBatchScanner(opts.tableName, opts.auths, bsOpts.scanThreads);
    batchReader.setTimeout(bsOpts.scanTimeout, TimeUnit.MILLISECONDS);
   
    Random r;
    if (opts.seed == null)
      r = new Random();
    else
      r = new Random(opts.seed);
   
    // do one cold
    boolean status = doRandomQueries(opts.num, opts.min, opts.max, opts.size, r, batchReader);
   
    System.gc();
    System.gc();
    System.gc();
   
    if (opts.seed == null)
      r = new Random();
    else
      r = new Random(opts.seed);
   
    // do one hot (connections already established, metadata table cached)
    status = status && doRandomQueries(opts.num, opts.min, opts.max, opts.size, r, batchReader);
   
    batchReader.close();
    if (!status) {
      System.exit(1);
    }
  }
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