Welcome to Apache Pig!
2021年2月22日 · Apache Pig is a platform for analyzing large data sets that consists of a high-level language for expressing data analysis programs, coupled with infrastructure for evaluating these programs. The salient property of Pig programs is that their structure is amenable to substantial parallelization, which in turns enables them to handle very large ...
Overview - Apache Pig
2017年6月20日 · Begin with the Getting Started guide which shows you how to set up Pig and how to form simple Pig Latin statements. When you are ready to start writing your own scripts, review the Pig Latin Basics manual to become familiar with the Pig Latin operators and the supported data types.
Getting Started - Apache Pig
2017年6月20日 · You can run Pig in either mode using the "pig" command (the bin/pig Perl script) or the "java" command (java -cp pig.jar ...). Examples This example shows how to run Pig in local and mapreduce mode using the pig command.
About Apache Pig
2021年2月22日 · What is Apache Pig? Apache Pig is a platform for analyzing large data sets. Pig's language, Pig Latin, is a simple query algebra that lets you express data transformations such as merging data sets, filtering them, and applying functions to records or groups of records.
Apache Pig Releases
2021年2月22日 · Starting with Pig 0.12, Pig will no longer publish .rpm or .deb artifacts as part of its release. Apache Bigtop provides .rpm and .deb artifacts for Hadoop, Pig, and other Hadoop related projects.
Pig Latin Basics - Apache Pig
In Pig Latin, nulls are implemented using the SQL definition of null as unknown or non-existent. Nulls can occur naturally in data or can be the result of an operation. Nulls, Operators, and Functions. Pig Latin operators and functions interact with nulls as shown in this table.
Built In Functions - Apache Pig
Pig function names are case sensitive and UPPER CASE. Pig string functions have an extra, first parameter: the string to which all the operations are applied. Pig may process results differently than as stated in the Java API Specification.
User Defined Functions - Apache Pig
2017年6月20日 · importPackage(Packages.org.apache.pig.scripting.js) pig = org.apache.pig.scripting.js.JSPig; helloworld.outputSchema = "word:chararray" function helloworld() { return 'Hello, World'; } function main() { var P = pig.compile(" a = load '1.txt' as (a0, a1);”+ “b = foreach a generate helloworld();”+ “store b into 'myoutput';"); var result ...
Apache Pig is a platform for analyzing large data sets that consists of a high-level language for expressing data analysis programs, coupled with infrastructure for evaluating these programs.
Apache Pig Philosophy
2021年2月22日 · Pig is designed to be easily controlled and modified by its users. Pig allows integration of user code where ever possible, so it currently supports user defined field transformation functions, user defined aggregates, and user defined conditionals.