Examples of org.apache.accumulo.core.client.Connector.createScanner()

Class org.apache.accumulo.core.client.Connector

Examples of org.apache.accumulo.core.client.Connector.createScanner()

org.apache.accumulo.core.client.Connector.createScanner()
Factory method to create a Scanner connected to Accumulo. @param tableName the name of the table to query data from @param authorizations A set of authorization labels that will be checked against the column visibility of each key in order to filter data. The authorizations passed in must be a subset of the accumulo user's set of authorizations. If the accumulo user has authorizations (A1, A2) and authorizations (A2, A3) are passed, then an exception will be thrown. @return Scanner object for configuring and querying data with @throws TableNotFoundException when the specified table doesn't exist

      expectations.put(Maps.immutableEntry("foo", "col2"), "val2");
      expectations.put(Maps.immutableEntry("bar", "col1"), "val1");
      expectations.put(Maps.immutableEntry("bar", "col2"), "val2");


      for (String table : Arrays.asList(newTable1, newTable2)) {
        Scanner s = connector.createScanner(table, new Authorizations());
        s.setRange(new Range());
        Map<Entry<String,String>,String> actual = new HashMap<Entry<String,String>,String>();
        for (Entry<Key,Value> entry : s) {
          actual.put(Maps.immutableEntry(entry.getKey().getRow().toString(), entry.getKey().getColumnFamily().toString()), entry.getValue().toString());
        }

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      log.debug("Creating " + tableName);
      c.tableOperations().create(tableName);
      log.debug("Deleting rows from " + tableName);
      c.tableOperations().deleteRows(tableName, null, null);
      log.debug("Verifying no rows were found");
      Scanner scanner = c.createScanner(tableName, new Authorizations());
      assertEquals(0, Iterables.size(scanner));
    }
  }
}

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    m3.put("data", "x", "1");
    m3.put("data", "y", "2");
    bw.addMutation(m3);
    bw.close();


    Scanner scanner = c.createScanner(table2, Constants.NO_AUTHS);
    
    HashMap<String,String> expected = new HashMap<String,String>();
    expected.put("001:x", "9");
    expected.put("001:y", "7");
    expected.put("008:x", "3");

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    ScannerOpts scanOpts = new ScannerOpts();
    BatchWriterOpts bwOpts = new BatchWriterOpts();
    opts.parseArgs(RemoveEntriesForMissingFiles.class.getName(), args, scanOpts, bwOpts);
    FileSystem fs = FileSystem.get(CachedConfiguration.getInstance());
    Connector connector = opts.getConnector();
    Scanner metadata = connector.createScanner(Constants.METADATA_TABLE_NAME, opts.auths);
    metadata.setBatchSize(scanOpts.scanBatchSize);
    metadata.setRange(Constants.METADATA_KEYSPACE);
    metadata.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
    int count = 0;
    int missing = 0;

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     * have no loaded markers.
     */


    // determine which failed files were loaded
    Connector conn = master.getConnector();
    Scanner mscanner = new IsolatedScanner(conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS));
    mscanner.setRange(new KeyExtent(new Text(tableId), null, null).toMetadataRange());
    mscanner.fetchColumnFamily(Constants.METADATA_BULKFILE_COLUMN_FAMILY);
    
    for (Entry<Key,Value> entry : mscanner) {
      if (Long.parseLong(entry.getValue().toString()) == tid) {

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          start = new Text();
        }
        log.debug("Making file deletion entries for " + range);
        Range deleteRange = new Range(KeyExtent.getMetadataEntry(range.getTableId(), start), false, KeyExtent.getMetadataEntry(range.getTableId(),
            range.getEndRow()), true);
        Scanner scanner = conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS);
        scanner.setRange(deleteRange);
        Constants.METADATA_DIRECTORY_COLUMN.fetch(scanner);
        Constants.METADATA_TIME_COLUMN.fetch(scanner);
        scanner.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
        scanner.fetchColumnFamily(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY);

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      try {
        long fileCount = 0;
        Connector conn = getConnector();
        // Make file entries in highest tablet
        bw = conn.createBatchWriter(Constants.METADATA_TABLE_NAME, new BatchWriterConfig());
        Scanner scanner = conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS);
        scanner.setRange(scanRange);
        Constants.METADATA_PREV_ROW_COLUMN.fetch(scanner);
        Constants.METADATA_TIME_COLUMN.fetch(scanner);
        Constants.METADATA_DIRECTORY_COLUMN.fetch(scanner);
        scanner.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);

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          }
        }
        
        // read the logical time from the last tablet in the merge range, it is not included in
        // the loop above
        scanner = conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS);
        Range last = new Range(stopRow);
        if (range.isMeta())
          last = last.clip(Constants.METADATA_ROOT_TABLET_KEYSPACE);
        scanner.setRange(last);
        Constants.METADATA_TIME_COLUMN.fetch(scanner);

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    }
    
    private KeyExtent getHighTablet(KeyExtent range) throws AccumuloException {
      try {
        Connector conn = getConnector();
        Scanner scanner = conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS);
        Constants.METADATA_PREV_ROW_COLUMN.fetch(scanner);
        KeyExtent start = new KeyExtent(range.getTableId(), range.getEndRow(), null);
        scanner.setRange(new Range(start.getMetadataEntry(), null));
        Iterator<Entry<Key,Value>> iterator = scanner.iterator();
        if (!iterator.hasNext()) {

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        boolean ambiguousZone = WalkingSecurity.get(state).inAmbiguousZone(conn.whoami(), tp);
        boolean ambiguousAuths = WalkingSecurity.get(state).ambiguousAuthorizations(conn.whoami());
        
        Scanner scan = null;
        try {
          scan = conn.createScanner(tableName, conn.securityOperations().getUserAuthorizations(conn.whoami()));
          int seen = 0;
          Iterator<Entry<Key,Value>> iter = scan.iterator();
          while (iter.hasNext()) {
            Entry<Key,Value> entry = iter.next();
            Key k = entry.getKey();

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