Example usage for org.apache.cassandra.hadoop ConfigHelper getInputIsWide

Introduction

In this page you can find the example usage for org.apache.cassandra.hadoop ConfigHelper getInputIsWide.

Prototype

public static boolean getInputIsWide(Configuration conf) 

Source Link

Usage

From source file:com.clojurewerkz.cascading.cassandra.hadoop.ColumnFamilyRecordReader.java

License:Apache License

public void initialize(InputSplit split, TaskAttemptContext context) throws IOException {
    this.split = (ColumnFamilySplit) split;
    Configuration conf = context.getConfiguration();
    KeyRange jobRange = ConfigHelper.getInputKeyRange(conf);
    filter = jobRange == null ? null : jobRange.row_filter;
    predicate = ConfigHelper.getInputSlicePredicate(conf);
    boolean widerows = ConfigHelper.getInputIsWide(conf);
    isEmptyPredicate = isEmptyPredicate(predicate);
    totalRowCount = ConfigHelper.getInputSplitSize(conf);
    batchSize = ConfigHelper.getRangeBatchSize(conf);
    cfName = ConfigHelper.getInputColumnFamily(conf);
    consistencyLevel = ConsistencyLevel.valueOf(ConfigHelper.getReadConsistencyLevel(conf));

    keyspace = ConfigHelper.getInputKeyspace(conf);

    try {//w  ww. j av a 2  s  .  co  m
        // only need to connect once
        if (socket != null && socket.isOpen())
            return;

        // create connection using thrift
        String location = getLocation();
        socket = new TSocket(location, ConfigHelper.getInputRpcPort(conf));
        TTransport transport = ConfigHelper.getInputTransportFactory(conf).openTransport(socket);
        TBinaryProtocol binaryProtocol = new TBinaryProtocol(transport);
        client = new Cassandra.Client(binaryProtocol);

        // log in
        client.set_keyspace(keyspace);
        if (ConfigHelper.getInputKeyspaceUserName(conf) != null) {
            Map<String, String> creds = new HashMap<String, String>();
            creds.put(IAuthenticator.USERNAME_KEY, ConfigHelper.getInputKeyspaceUserName(conf));
            creds.put(IAuthenticator.PASSWORD_KEY, ConfigHelper.getInputKeyspacePassword(conf));
            AuthenticationRequest authRequest = new AuthenticationRequest(creds);
            client.login(authRequest);
        }
    } catch (Exception e) {
        throw new RuntimeException(e);
    }

    iter = widerows ? new WideRowIterator() : new StaticRowIterator();
    logger.debug("created {}", iter);
}

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