从猪的单线输入生成多行输出

Question

我的要求是通过在猪脚本中使用单行输入生成多行输出。什么是可能的解决方案？

Answer 1

这个想法是将你的输入行转换成一个袋子，然后将其压扁。这可能是两种情况：

阅读文本：

txt = load '/pig_fun/input/text.txt' using TextLoader(); 
words = foreach txt generate TOKENIZE($0); 
pivoted = foreach words generate FLATTEN($0); 
dump pivoted; 

输入：

My requirement is to generate multiple lines of output by using single line of input in pig scripting. 
What are the possible solutions? 

OUTPUT：

(My) 
(requirement) 
(is) 
(to) 
(generate) 
(multiple) 
(lines) 
(of) 
(output) 
(by) 
(using) 
(single) 
(line) 
(of) 
(input) 
(in) 
(pig) 
(scripting.) 
(What) 
(are) 
(the) 
(possible) 
(solutions?) 

阅读列，然后旋转他们看到Pivot table with Apache Pig