AWS EC2：使用CLI启动实例时添加标记(AWS EC2: Add a tag when launching an instance using CLI)

 在猪脚本中试试这个 
 
 假设您的输入文件名是input.csv 
 
 1.首先使用copyfromlocal命令将此输入文件移动到HDFS。 
 2.在猪脚本下运行此命令 
 
 PigScript： 
 HDFS模式： 
 
A = LOAD 'hdfs://<hostname>:<port>/user/test/input.csv' AS line;
B = FOREACH A GENERATE FLATTEN(REGEX_EXTRACT_ALL(line,'"(.*)","(.*)"')) AS (id:int,name:chararray);
STORE B INTO '/user/test/output' USING PigStorage(',');
 
 本地模式： 
 
A = LOAD 'input.csv' AS line;
B = FOREACH A GENERATE FLATTEN(REGEX_EXTRACT_ALL(line,'"(.*)","(.*)"')) AS (id:int,name:chararray);
STORE B INTO 'output' USING PigStorage(',');
 
 输出： 
 
Id,Name
1,Raju
2,Anitha
3,Rakesh

Try this in pig script
 
Suppose your input file name is input.csv
 
1.First move this input file to HDFS using copyfromlocal command.
 2. Run this below pig script 
 
PigScript:
 HDFS mode: 
 
A = LOAD 'hdfs://<hostname>:<port>/user/test/input.csv' AS line;
B = FOREACH A GENERATE FLATTEN(REGEX_EXTRACT_ALL(line,'"(.*)","(.*)"')) AS (id:int,name:chararray);
STORE B INTO '/user/test/output' USING PigStorage(',');
 
Local mode:
 
A = LOAD 'input.csv' AS line;
B = FOREACH A GENERATE FLATTEN(REGEX_EXTRACT_ALL(line,'"(.*)","(.*)"')) AS (id:int,name:chararray);
STORE B INTO 'output' USING PigStorage(',');
 
Output:
 
Id,Name
1,Raju
2,Anitha
3,Rakesh