はどのように豚のグループ袋に

Question

まず私は、データと私はこのような構造を有している例の結果については

A = LOAD './test.txt' USING PigStorage(' ') AS (id:int, time:int, value:float); 

B = GROUP A BY time; 

Iグループを持っています。

1001 {(1,1001,0.2),(3,1001,0.3),(2,1001,0.3),(4,1001,0.6)} 
1002 {(2,1002,0.5),(1,1002,0.3),(3,1002,0.1),(4,1002,0.6)} 
1003 {(4,1003,0.2),(1,1003,0.8),(2,1003,0.4),(3,1003,0.5)} 

しかし、私は

1001  {(1,1001,0.2),(2,1001,0.3),(3,1001,0.3),(4,1001,0.6)} 
1002  {(1,1002,0.3),(2,1002,0.5),(3,1002,0.1),(4,1002,0.6)} 
1003  {(1,1003,0.8),(2,1003,0.4),(3,1003,0.5),(4,1003,0.2)} 

Answer 1

使用NESTED FOREACH

C = FOREACH B { 
      sort_by_id = ORDER A BY id; 
      GENERATE group, sort_by_id ; 
       };