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

        
        serversToFlush.clear();
        
        try {
          Connector conn = getConnector();
          Scanner scanner = new IsolatedScanner(conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS));
          ColumnFQ.fetch(scanner, Constants.METADATA_FLUSH_COLUMN);
          ColumnFQ.fetch(scanner, Constants.METADATA_DIRECTORY_COLUMN);
          scanner.fetchColumnFamily(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY);
          scanner.fetchColumnFamily(Constants.METADATA_LOG_COLUMN_FAMILY);
          scanner.setRange(new KeyExtent(new Text(tableId), null, ByteBufferUtil.toText(startRow)).toMetadataRange());

View Full Code Here

        log.debug("Authorizations are: " + authorizations);
        if (isOffline) {
          scanner = new OfflineScanner(instance, new AuthInfo(user, ByteBuffer.wrap(password), instance.getInstanceID()), Tables.getTableId(instance, table),
              authorizations);
        } else {
          scanner = conn.createScanner(table, authorizations);
        }
        if (isIsolated) {
          log.info("Creating isolated scanner");
          scanner = new IsolatedScanner(scanner);
        }

View Full Code Here

      case READ:
        Authorizations auths = SecurityHelper.getUserAuths(state, SecurityHelper.getTabUserName(state));
        boolean canRead = SecurityHelper.getTabPerm(state, SecurityHelper.getTabUserName(state), TablePermission.READ);
        boolean ambiguousAuths = SecurityHelper.ambiguousAuthorizations(state, SecurityHelper.getTabUserName(state));
        try {
          Scanner scan = conn.createScanner(tableName, conn.securityOperations().getUserAuthorizations(SecurityHelper.getTabUserName(state)));
          int seen = 0;
          Iterator<Entry<Key,Value>> iter = scan.iterator();
          while (iter.hasNext()) {
            Entry<Key,Value> entry = iter.next();
            Key k = entry.getKey();

View Full Code Here

    bw.addMutation(m);
    
    bw.close();
    
    int count = 0;
    Scanner scanner = uconn.createScanner("table1", new Authorizations("A"));
    for (Entry<Key,Value> entry : scanner) {
      if (entry.getKey().getColumnQualifierData().toString().equals("COUNT")) {
        Assert.assertEquals("2", entry.getValue().toString());
      } else if (entry.getKey().getColumnQualifierData().toString().equals("SIZE")) {
        Assert.assertEquals("8", entry.getValue().toString());

View Full Code Here

    }
    
    Assert.assertEquals(3, count);
    
    count = 0;
    scanner = uconn.createScanner("table1", new Authorizations("A", "B"));
    for (Entry<Key,Value> entry : scanner) {
      if (entry.getKey().getColumnQualifierData().toString().equals("IMG")) {
        Assert.assertEquals("ABCDEFGH", entry.getValue().toString());
      }
      count++;

View Full Code Here

        UtilWaitThread.sleep(100);
      }
    }
    
    // delete the clone markers and create directory entries
    Scanner mscanner = conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS);
    mscanner.setRange(new KeyExtent(new Text(tableId), null, null).toMetadataRange());
    mscanner.fetchColumnFamily(Constants.METADATA_CLONED_COLUMN_FAMILY);
    
    int dirCount = 0;

View Full Code Here

          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);
        ColumnFQ.fetch(scanner, Constants.METADATA_DIRECTORY_COLUMN);
        ColumnFQ.fetch(scanner, Constants.METADATA_TIME_COLUMN);
        scanner.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);
        scanner.fetchColumnFamily(Constants.METADATA_CURRENT_LOCATION_COLUMN_FAMILY);

View Full Code Here

     */


    // determine which failed files were loaded
    AuthInfo creds = SecurityConstants.getSystemCredentials();
    Connector conn = HdfsZooInstance.getInstance().getConnector(creds.user, creds.password);
    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) {

View Full Code Here

      try {
        long fileCount = 0;
        Connector conn = getConnector();
        // Make file entries in highest tablet
        bw = conn.createBatchWriter(Constants.METADATA_TABLE_NAME, 1000000L, 1000L, 1);
        Scanner scanner = conn.createScanner(Constants.METADATA_TABLE_NAME, Constants.NO_AUTHS);
        scanner.setRange(scanRange);
        ColumnFQ.fetch(scanner, Constants.METADATA_PREV_ROW_COLUMN);
        ColumnFQ.fetch(scanner, Constants.METADATA_TIME_COLUMN);
        ColumnFQ.fetch(scanner, Constants.METADATA_DIRECTORY_COLUMN);
        scanner.fetchColumnFamily(Constants.METADATA_DATAFILE_COLUMN_FAMILY);

View Full Code Here

          }
        }
        
        // 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);
        scanner.setRange(new Range(stopRow));
        ColumnFQ.fetch(scanner, Constants.METADATA_TIME_COLUMN);
        for (Entry<Key,Value> entry : scanner) {
          if (Constants.METADATA_TIME_COLUMN.hasColumns(entry.getKey())) {
            maxLogicalTime = TabletTime.maxMetadataTime(maxLogicalTime, entry.getValue().toString());

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.