我有一个示例输入作为制表符分隔的键，值对如下B_1001@2012-06-1596.73429163933419@0.5511284347710459B_1001@2012-06-18187.4348199976547@0.5544551559243536B_1002@2012-09-26745.4912066349087@0.8398570478932768B_1002@2012-09-2860.97117969729124@0.8500267379723409然后我将这个文件加载到pig中并执行以下操作a=load'/home/HadoopUser/Desktop/a.txt'as