package com.amazonaws.vivanih.hadoop.cascading;

import java.util.Properties;

import cascading.flow.Flow;
import cascading.flow.FlowConnector;
import cascading.flow.FlowDef;
import cascading.flow.hadoop.HadoopFlowConnector;
import cascading.operation.aggregator.Count;
import cascading.operation.regex.RegexSplitGenerator;
import cascading.pipe.Each;
import cascading.pipe.Every;
import cascading.pipe.GroupBy;
import cascading.pipe.Pipe;
import cascading.property.AppProps;
import cascading.scheme.hadoop.TextDelimited;
import cascading.tap.Tap;
import cascading.tap.hadoop.Hfs;
import cascading.tuple.Fields;


public class
  Main
  {
  public static void
  main( String[] args )
    {
    String docPath = args[ 0 ];
    String wcPath = args[ 1 ];

    Properties properties = new Properties();
    AppProps.setApplicationJarClass( properties, Main.class );
    FlowConnector flowConnector = new HadoopFlowConnector( properties );

    // create source and sink taps
    Tap docTap = new Hfs( new TextDelimited( true, "|" ), docPath );
    Tap wcTap = new Hfs( new TextDelimited( true, "|" ), wcPath );

    // specify a regex operation to split the "document" text lines into a token stream
    Fields token = new Fields( "token" );
    Fields text = new Fields( "text" );
    RegexSplitGenerator splitter = new RegexSplitGenerator( token, "[ \\[\\]\\(\\),.]" );
    // only returns "token"
    Pipe docPipe = new Each( "token", text, splitter, Fields.RESULTS );

    // determine the word counts
    Pipe wcPipe = new Pipe( "wc", docPipe );
    wcPipe = new GroupBy( wcPipe, token );
    wcPipe = new Every( wcPipe, Fields.ALL, new Count(), Fields.ALL );

    // connect the taps, pipes, etc., into a flow
    FlowDef flowDef = FlowDef.flowDef()
     .setName( "wc" )
     .addSource( docPipe, docTap )
     .addTailSink( wcPipe, wcTap );

    // write a DOT file and run the flow
    Flow wcFlow = flowConnector.connect( flowDef );
    wcFlow.writeDOT( "dot/wc.dot" );
    wcFlow.complete();
    }
  }

package com.amazonaws.vivanih.hadoop.cascading;

import java.util.Properties;

import cascading.flow.Flow;
import cascading.flow.FlowConnector;
import cascading.flow.FlowDef;
import cascading.flow.hadoop.HadoopFlowConnector;
import cascading.operation.aggregator.Count;
import cascading.operation.regex.RegexSplitGenerator;
import cascading.pipe.Each;
import cascading.pipe.Every;
import cascading.pipe.GroupBy;
import cascading.pipe.Pipe;
import cascading.property.AppProps;
import cascading.scheme.hadoop.TextDelimited;
import cascading.tap.Tap;
import cascading.tap.hadoop.Hfs;
import cascading.tuple.Fields;


public class
  Main
  {
  public static void
  main( String[] args )
    {
    String inPath = args[ 0 ];
    String outPath = args[ 1 ];

    Properties properties = new Properties();
    AppProps.setApplicationJarClass( properties, Main.class );
    FlowConnector flowConnector = new HadoopFlowConnector( properties );

    // create source and sink taps
    Tap inTap = new Hfs( new TextDelimited( true, "|" ), inPath );
    Tap outTap = new Hfs( new TextDelimited( true, "|" ), outPath );

    
    // specify a pipe to connect the taps
    Pipe copyPipe = new Pipe( "copy" );
    // connect the taps, pipes, etc., into a flow
    FlowDef flowDef = FlowDef.flowDef()
    .addSource( copyPipe, inTap )
    .addTailSink( copyPipe, outTap );
    // run the flow
    flowConnector.connect( flowDef ).complete();
    }
  }

Update Main.java