在 Apache Pig 中为元组创建模式

Question

如何在加载关系时为以下元组数据创建 Pig 模式？

]$ cat data

(3,8,9) (4,5,6)

(1,4,7) (3,7,5)

(2,5,8) (9,5,8)

我在本地模式下尝试了下面的语句

A = LOAD '/home/cloudera/data' AS (t1:tuple(t1a:int,t1b:int,t1c:int),t2:tuple(t2a:int,t2b:int,t2c:int));

如果我转储数据，我期望结果

DUMP A;

((3,8,9),(4,5,6))

((1,4,7),(3,7,5))

((2,5,8),(9,5,8))

但我得到的是，

((3,8,9),)

((1,4,7),)

((2,5,8),)

我正在使用 Apache Pig 版本 0.11.0-cdh4.7.0

Answer 1

下一部作品：

A = load  '$input' using PigStorage(' ') AS (t1:tuple(t1a:int,t1b:int,t1c:int),t2:tuple(t2a:int,t2b:int,t2c:int));
describe A;
dump A;

转储：

((3,8,9),(4,5,6))
((1,4,7),(3,7,5))
((2,5,8),(9,5,8))

Creating schema for Tuple in Apache Pig