hadoop - pig 拉丁语-从单行输入创建多行输出

Question

我有如下输入数据:

Row1|2014-04-04 18:46:18|37.52|-84.34|30870|580.372 ms, 759.065 ms, 695.879 ms

Row2|2014-04-04 18:47:18|37.68|-84.34|31127|619.341 ms, 725.121 ms, 696.790 ms

我如何分成多行，如下所示:

Row1|2014-04-04 18:46:18|37.52|-84.34|30870|580.372 ms

Row1|2014-04-04 18:46:18|37.52|-84.34|30870|759.065 ms

Row1|2014-04-04 18:46:18|37.52|-84.34|30870|695.879 ms

Row2|2014-04-04 18:47:18|37.68|-84.34|31127|619.341 ms

Row2|2014-04-04 18:47:18|37.68|-84.34|31127|725.121 ms

Row2|2014-04-04 18:47:18|37.68|-84.34|31127|696.790 ms

提前致谢

Answer 1

您可以使用FLATTEN。例如。，

a = load 'test.txt' using PigStorage('|') as (c1: chararray, c2: chararray, c3: double, c4: double, c5: long, c6: chararray);
b = foreach a generate c1, c2, c3, c4, c5, STRSPLIT(c6, ', ', 3) as c6;
c = foreach b generate c1, c2, c3, c4, c5, FLATTEN(c6) as (c6: chararray, c7: chararray, c8: chararray);
dump c;