Apache pig 清管器运行总计：总计超过（）

我正在使用以下pig脚本计算运行总数（pig本地模式）

但是，我得到了以下错误

未知总金额（C1.工资）

有人有什么想法吗

编辑：

我自己想出了答案。这是：

  Register /home/ec2-user/pig*/bin/piggybank-0.12.0.jar ;   
 define Over org.apache.pig.piggybank.evaluation.Over();
 define Stitch org.apache.pig.piggybank.evaluation.Stitch();
 A = load '/home/ec2-user/staff_data.csv' using PigStorage(',') as (id:int, name:chararray, salary:int, department:chararray);
 B = group A by department;
 C = foreach B {
     C1 = order A by salary;
     generate flatten(Stitch(C1, Over(C1.salary, 'sum(int)')));
 };

---

你试过使用SUM和OVER吗？而不是累加

  Register /home/ec2-user/pig*/bin/piggybank-0.12.0.jar ;   
 define Over org.apache.pig.piggybank.evaluation.Over();
 define Stitch org.apache.pig.piggybank.evaluation.Stitch();
 A = load '/home/ec2-user/staff_data.csv' using PigStorage(',') as (id:int, name:chararray, salary:int, department:chararray);
 B = group A by department;
 C = foreach B {
     C1 = order A by salary;
     generate flatten(Stitch(C1, Over(C1.salary, 'sum(int)')));
 };