Execute Pig Script from Grunt Shell

Question

If I want to execute pig script from grunt shell what all do I need to have? I have copied the

.pig file and source file into the hdfs. what else do I need to copy? Can you please share

the execution command or statement along with step by step process how to execute the

pig script in grunt shell?

Answer 1

To execute pig script from grunt shell you can use exec or run command. While the time of using the run command, all the commands present in the script file will be available in the grunt history, which is not the case with the exec command.

You can load the data file in PigStorage by using the following piece of code:-

product = LOAD 'hdfs://localhost:9000/product_dir/products.csv' USING PigStorage(',') as (product_id:int, product_name:chararray, price:int);

dump product;

After loading the data files the next thing you can do is execute the script file, which is stored in HDFS by using the following commands:-

exec hdfs://localhost:9000/script_dir/pig_script.pig

or

run hdfs://localhost:9000/script_dir/pig_script.pig