Beginning Apache Cassandra Development by Vivek Mishra

Author:Vivek Mishra [Mishra, Vivek]
Language: eng
Format: epub, pdf
Tags: Computers, Databases, Data Processing, Data Mining
ISBN: 9781484201428
Google: H1YnCgAAQBAJ
Publisher: Apress
Published: 2014-12-08T20:39:54+00:00

Counting Tweets

In this example we will demonstrate running various Pig commands using the interactive Grunt shell. For Pig scripts having a medium level of complexity, we may want to prepare and run those as Pig scripts, as well. The command to run a Pig script is as follows:

Pig –x local myscript.pig

Here myscript.pig is a compiled Pig script. We can also execute such Pig scripts in embedded mode as follows:

// Compile to .class file

javac –cp pig.jar MyScript.java

// Running Pig script as java program in embeddeded mode

java –cp:pig.jar:. MyScript

In this exercise, we will explore Apache Pig for running the MapReduce program for total tweet count and counting tweets for a specific screen_name. 1.First load tweets using PigStorage:

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