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  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you under the Apache License, Version 2.0 (the
  * "License"); you may not use this file except in compliance
  * with the License.  You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package org.apache.pig;
This class provides an implementation of OrderedLoadFunc interface which can be optionally re-used by LoadFuncs that use FileInputFormat, by having this as a super class

Pig 0.7
@InterfaceStability.Evolving // Since we haven't done outer join for merge join yet
public abstract class FileInputLoadFunc extends LoadFunc implements OrderedLoadFunc  {
    throws IOException{
        FileSplit fileSplit = null;
        if(split instanceof FileSplit){
            fileSplit = (FileSplit)split;
            throw new RuntimeException("LoadFunc expected split of type FileSplit");
        return new FileSplitComparable(
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