无法从连接中获取数据。
数据： 豪尔赫波萨达|洋基队| {（捕手，2000年），（Designated_hitter，2001年）} | [游戏＃1594，＃hit_by_pitch 65，grand_slams＃7] Landon Powell |奥克兰| {（Catcher，2000），（First_baseman，2001）} | [on_base_percentage＃0.297，游戏＃26，home_runs＃7] 马丁普拉多|亚特兰大| {（Second_baseman，2002年），（内野手，2003年），（Left_fielder，2001年）} | [游戏＃258，hit_by_pitch＃3]
**Code:**
bfile= LOAD 'basketball1.txt' using PigStorage('|') as (name:chararray,team:chararray,pos:bag{t:tuple(point:chararray,year:int)},bat:map[]);
bfile1= foreach bfile generate name,pos.year as year;
bfile2= foreach bfile1 generate name,flatten(year) as play_year ;
bfile3= group bfile2 by play_year;
bfile4= foreach bfile3 generate group,COUNT($1) as count;
bfile5= foreach bfile generate flatten(pos.year) as year,bat#'games' as games_cnt;
bfile6= group bfile5 by year;
bjoin= join bfile3 by group ,bfile6 by group;
bjoin1= foreach bjoin generate bfile3.group,bfile3::bfile2.name as name,
bfile6::bfile5.games_cnt as tot_games;
**Describe bjoin1:**
bjoin: {bfile3::group: int,bfile3::bfile2: {(name: chararray,play_year: int)},
bfile6::group: int,bfile6::bfile5: {(year: int,games_cnt: bytearray)}}
在执行转储bjoin1 时，我遇到以下问题：
2014-11-15 07:31:42,318 [main] INFO org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher - Some jobs have failed! Stop running all dependent jobs
2014-11-15 07:31:42,321 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1066: Unable to open iterator for alias bjoin1
Details at logfile: /home/cloudera/pig_1416065344409.log
grunt> 2014-11-15 07:31:47,857 [communication thread] INFO org.apache.hadoop.mapred.LocalJobRunner - reduce > reduce