Example usage for org.apache.hadoop.io WritableComparator subclass-usage

Introduction

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

Usage

From source file ldbc.socialnet.dbgen.util.UpdateEventComparator.java

public class UpdateEventComparator extends WritableComparator {
    protected UpdateEventComparator() {
        super(LongWritable.class);
    }

    @Override

From source file ldbc.socialnet.dbgen.util.UpdateEventGroupKeyComparator.java

public class UpdateEventGroupKeyComparator extends WritableComparator {
    protected UpdateEventGroupKeyComparator() {
        super(LongWritable.class);
    }

    @Override

From source file license.LicenseGroupingComparator.java

public class LicenseGroupingComparator extends WritableComparator {

    public LicenseGroupingComparator() {
        super(LicenseKey.class, true);
    }

From source file mahout.analysis.MahoutOAComparator.java

/**
 *
 * @author palashkochar
 */
public class MahoutOAComparator extends WritableComparator {

From source file name.abhijitsarkar.hadoop.join.KeyGroupingComparator.java

/**
 * This class groups the output from {@link CustomerMapper CustomerMapper} and from {@link OrderMapper OrderMapper} so
 * that both customer and order records with the same key (customer ID) are sent to the reducer in one invocation.
 * Without custom grouping, the records are sent separately to the Reducer which forces it to save the records in memory
 * until a match for the key is found in a subsequent iteration. That is not a scalable solution and will run out of
 * memory for large data sets.

From source file nl.sanoma.hdt.report.generator.KeyDataComparator.java

/**
 * Comparator to ensure that the date will be sorted by categories, so the
 * reducer can process it one after another
 *
 * @author Richrd Ern Kiss
 */

From source file nl.sanoma.hdt.report.generator.KeyDataGroupingComparator.java

/**
 * Class to ensure that all the data of a user is processed by the same reducer
 *
 * @author Richrd Ern Kiss
 */
public class KeyDataGroupingComparator extends WritableComparator {

From source file org.acacia.csr.java.SortComparator.java

/**
 * Compares the composite key, {@link StockKey}.
 * We sort by symbol ascendingly and timestamp
 * descendingly.
 * @author Jee Vang
 *

From source file org.acacia.csr.java.VertexComparator.java

/**
 * Compares the composite key, {@link StockKey}.
 * We sort by symbol ascendingly and timestamp
 * descendingly.
 * @author Jee Vang
 *

From source file org.apache.blur.mapreduce.lib.update.IndexKeyWritableComparator.java

public class IndexKeyWritableComparator extends WritableComparator {

    public IndexKeyWritableComparator() {
        super(IndexKey.class, true);
    }