我正在尝试编写一个filter udf，它将输入作为tuple，并返回tuple，但是当我在gruntshell中定义函数时，我得到的错误消息是failed to parse，在这里我做错了

REGISTER /home/filterUDF.jar;

 DEFINE filDist  'FilterDistrictUdf/FilterDistrict' 

package FilterDistrictUdf;

import java.io.IOException;

import org.apache.pig.FilterFunc;

import org.apache.pig.data.Tuple;

public class FilterDistrict extends FilterFunc{

@Override
public Boolean exec(Tuple input) throws IOException {
    String line = input.toString();
    String[] columns = line.split(",");
    Double bplObjective = Double.parseDouble(columns[2]);
    Double bplPerformance = Double.parseDouble(columns[10]);

    //Double bplObjective = (Double )input.get(2);
    //Double bplPerformance = (Double )input.get(10);
    //BigInteger mul = new BigInteger("80");
    //BigInteger div = new BigInteger("100");

    if(bplPerformance >= ( (bplObjective* 80)/100) )
        return true;
    else
        return false;

}

}
错误：

ERROR 1200: <line 40, column 15>  Syntax error, unexpected symbol at or 
  near ''FilterDistrictUdf/FilterDistrict''

  Failed to parse: <line 40, column 15>  Syntax error, unexpected symbol at 
  or near ''FilterDistrictUdf/FilterDistrict''
   at 

  org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:244)
   at 
  org.apache.pig.parser.QueryParserDriver.parse(QueryParserDriver.java:182)
   at org.apache.pig.PigServer$Graph.validateQuery(PigServer.java:1707)
   at org.apache.pig.PigServer$Graph.registerQuery(PigServer.java:1680)
   at org.apache.pig.PigServer.registerQuery(PigServer.java:623)
   at 
   org.apache.pig.tools.grunt.GruntParser.processPig(GruntParser.java:1063)
   at

org.apache.pig.tools.pigscript.parser.pigscriptparser.parse（pigscriptparser。java:501)在org.apache.pig.tools.grunt.gruntparser.parsestoponerror（gruntparser。java:230)在org.apache.pig.tools.grunt.gruntparser.parsestoponerror（gruntparser。java:205)在org.apache.pig.tools.grunt.grunt.run（grunt。java:66)在org.apache.pig.main.run（main。java:558)在org.apache.pig.main.main（main。java:170)位于sun.reflect.nativemethodaccessorimpl.invoke0（本机方法）
sun.reflect.nativemethodaccessorimpl.invoke（nativemethodaccessorimpl。java:62)在
sun.reflect.delegatingmethodaccessorimpl.invoke（delegatingmethodaccessorimpl.ja va:43）位于java.lang.reflect.method.invoke（method）。java:497)在org.apache.hadoop.util.runjar.main（runjar。java:212)