我试着用Pig的平均值，最小值，最大值。min和max函数在执行时都卡住了，avg函数抛出错误。但是count函数可以正常工作。
org.apache.pig.backend.executionengine.execute:错误0:标量在输出中有多行。一年级：（二年级教师，{（65587.90）}），二年级：（四年级教师，{（567.24）}）
我的代码：

register 'pig/contrib/piggybank/java/piggybank.jar';
define Replace org.apache.pig.piggybank.evaluation.string.REPLACE();
A = LOAD '/user/hduser/salaryTravel.csv' using org.apache.pig.piggybank.storage. CSVLoader()  AS (name:chararray,job:chararray,salary:chararray,TA:chararray,type:chararray,org:chararray,year:int);
B = foreach A generate name,job,REPLACE(salary,',','') as salary:float, REPLACE(TA,',','') as TA:float, type, org, year;
C = filter B by type=='LBOE';
D = filter C by year==2010;
E = group D by job;
number = foreach E generate group,COUNT(D.salary);
average = foreach E genetate group,AVG(D.salary);
minim = foreach E genetate group,MIN(D.salary);
maxim = foreach E genetate group,MAX(D.salary);

样本数据

(ABBOTT,DEEDEE W,GRADES 9-12 TEACHER,52,122.10,0,LBOE,ATLANTA INDEPENDENT SCHOOL SYSTEM,2010)
 (ABBOTT,RYAN V,GRADE 4 TEACHER,56,567.24,0,LBOE,ATLANTA INDEPENDENT SCHOOL SYSTEM,2010)
 (ABBOUD,CLAUDIA MORA,GRADES K-5 TEACHER,63,957.50,0,LBOE,ATLANTA INDEPENDENT SCHOOL SYSTEM,2010)
 (ABDUL-JABBAR,KHADEEJA ,GRADES 9-12 TEACHER,16,791.73,0,LBOE,ATLANTA INDEPENDENT SCHOOL SYSTEM,2010)
 (ABDUL-RAZACQ,SALAHUD-DIN ,INSTRUCTIONAL SPECIALIST P-8,45,832.92,0,LBOE,ATLANTA INDEPENDENT SCHOOL SYSTEM,2010)
 (ABDULLAH,DIANA ,SPECIAL ED PARAPRO/AIDE,10,934.94,0,LBOE,ATLANTA INDEPENDENT SCHOOL SYSTEM,2010)
 (ABDULLAH,NADIYAH W,GRADES 6-8 TEACHER,75,109.92,0,LBOE,ATLANTA INDEPENDENT SCHOOL SYSTEM,2010)
 (ABDULLAH,RHONDALYN Y,SPECIAL ED PARAPRO/AIDE,28,649.34,0,LBOE,ATLANTA INDEPENDENT SCHOOL SYSTEM,2010)
 (OSBORNE,CHRISTINE L,INSTRUCTIONAL SUPERVISOR,78,875.59,3,265.71,LBOE,COBB COUNTY SCHOOL DISTRICT,2010)
 (OSBORNE,DORIS A,OCCUPATIONAL THERAPIST ,65,421.79,1,156.05,LBOE,COBB COUNTY SCHOOL DISTRICT,2010)

第7行分组操作后的样本数据。

(GRADE 2 TEACHER,{(OSBORNE,VIRGINIA E,GRADE 2 TEACHER,65587.90,0,LBOE,COBB COUNTY SCHOOL DISTRICT,2010)})
 (GRADE 4 TEACHER,{(ABBOTT,RYAN V,GRADE 4 TEACHER,56567.24,0,LBOE,ATLANTA INDEPENDENT SCHOOL SYSTEM,2010)})
 (MAINTENANCE PERSONNEL,{(BROOKS,RICHARD M,MAINTENANCE PERSONNEL,72655.52,0,LBOE,FULTON COUNTY BOARD OF EDUCATION,2010),(SUMNER,ROBERT O,MAINTENANCE PERSONNEL,72655.53,0,LBOE,FULTON COUNTY BOARD OF EDUCATION,2010),(MCCULLOUGH,ALVIN J,MAINTENANCE PERSONNEL,72655.52,0,LBOE,FULTON COUNTY BOARD OF EDUCATION,2010),(DALTON,JAMES E,MAINTENANCE PERSONNEL,72655.52,2124.60,LBOE,FULTON COUNTY BOARD OF EDUCATION,2010),(SMITH,KEVIN W,MAINTENANCE PERSONNEL,72655.52,0,LBOE,FULTON COUNTY BOARD OF EDUCATION,2010),(MANGHAM,LARRY G,MAINTENANCE PERSONNEL,72655.52,0,LBOE,FULTON COUNTY BOARD OF EDUCATION,2010)})

是Pig里的虫子吗？请帮帮我。