如何在PIG中获得EPOCH时间？

使用CONCAT将您的单词与epochtime组合在一起。您可以使用ToUnixTime（）获取epochtime

A = LOAD 'words.txt' AS (word:chararray);
B = FOREACH A GENERATE CONCAT(CONCAT(A.word,'_'),(chararray)ToUnixTime(CurrentTime());
DUMP B;

假设您的Shell脚本名称为test.sh

%declare my_shell_script 'test.sh'
A = LOAD 'data.txt' AS (f1:int,f2:chararray);
B = FOREACH A GENERATE '$my_shell_script';

如果您的Shell脚本具有参数，请说param1

%declare my_shell_script 'test.sh $param1'
A = LOAD 'data.txt' AS (f1:int,f2:chararray);
B = FOREACH A GENERATE '$my_shell_script';