Example usage for org.apache.hadoop.mapreduce RecordReader subclass-usage

Introduction

In this page you can find the example usage for org.apache.hadoop.mapreduce RecordReader subclass-usage.

Usage

From source file org.apache.sqoop.mapreduce.db.DBRecordReader.java

/**
 * A RecordReader that reads records from a SQL table.
 * Emits LongWritables containing the record number as
 * key and DBWritables as value.
 */
public class DBRecordReader<T extends DBWritable> extends RecordReader<LongWritable, T> {

From source file org.apache.sqoop.mapreduce.hcat.SqoopHCatRecordReader.java

/**
 * A Record Reader that can combine underlying splits.
 */
public class SqoopHCatRecordReader extends RecordReader<WritableComparable, HCatRecord> {
    private final SqoopHCatExportFormat hCatExportFormat;
    private SqoopHCatInputSplit hCatSplit;

From source file org.apache.sqoop.mapreduce.mainframe.MainframeDatasetRecordReader.java

/**
 * A RecordReader that reads records from a mainframe dataset.
 * Emits LongWritables containing the record number as key and DBWritables as
 * value.
 */
public abstract class MainframeDatasetRecordReader<T extends DBWritable> extends RecordReader<LongWritable, T> {

From source file org.apache.sqoop.odps.OdpsSqoopRecordReader.java

public class OdpsSqoopRecordReader extends RecordReader<LongWritable, Record> {
    private TaskAttemptContext context;

    private LongWritable key;
    private Record value;

From source file org.apache.taverna.platform.execution.impl.hadoop.CrossProductRecordReader.java

public class CrossProductRecordReader extends RecordReader<Text, TextArrayWritable> {

    private static final Log Logger = LogFactory.getLog(CrossProductRecordReader.class);

    // Input directories (one for each port) containing files that are used 
    // as inputs to Taverna processor/activity

From source file org.apache.taverna.platform.execution.impl.hadoop.TavernaRecordReader.java

/**
 *
 *
 * @author David Withers
 */
public class TavernaRecordReader extends RecordReader<LongWritable, MapWritable> {

From source file org.apache.tez.tools.TFileRecordReader.java

/**
 * Simple record reader which reads the TFile and emits it as key, value pair
 */
public class TFileRecordReader extends RecordReader<Text, Text> {

    private static final Log LOG = LogFactory.getLog(TFileRecordReader.class);

From source file org.apache.tinkerpop.gremlin.hadoop.process.computer.GraphFilterRecordReader.java

/**
 * @author Marko A. Rodriguez (http://markorodriguez.com)
 */
public final class GraphFilterRecordReader extends RecordReader<NullWritable, VertexWritable> {

    private GraphFilter graphFilter = null;

From source file org.apache.tinkerpop.gremlin.hadoop.structure.io.graphson.GraphSONLegacyRecordReader.java

/**
 * @author Edi Bice
 */
public final class GraphSONLegacyRecordReader extends RecordReader<NullWritable, VertexWritable> {

    private final GraphSONLegacyReader graphsonLegacyReader = GraphSONLegacyReader.build().create();

From source file org.apache.tinkerpop.gremlin.hadoop.structure.io.graphson.GraphSONRecordReader.java

/**
 * @author Marko A. Rodriguez (http://markorodriguez.com)
 */
public final class GraphSONRecordReader extends RecordReader<NullWritable, VertexWritable> {

    private GraphSONReader graphsonReader;