How to make a PIG UDF

A C# Developers intro...

Transcript

1. How to make a PIG UDF An Eclipse Beginners Guide…
2. The Java UDF ‘how to’ http://pig.apache.org/docs/r0.8.1/udf.html
3. Simple UDF Script -- myscript.pig REGISTER myudfs.jar; A = LOAD 'student_data' AS (name: chararray, age: int, gpa: float); B = FOREACH A GENERATE myudfs.UPPER(name); DUMP B;
4. The simple UDF
5. So… let’s write this UDF… 1. Start Eclipse 2. Create a new Java Project 3. Add pig.jar as an external Jar 4. Write our UDF class 5. Compile to a JAR
6. So… let’s write this UDF… 1. Start Eclipse 2. Create a new Java Project 3. Add pig.jar as an external Jar 4. Write our UDF class 5. Compile to a JAR
7. So… let’s write this UDF… 1. Start Eclipse 2. Create a new Java Project 3. Add pig.jar as an external Jar 4. Write our UDF class 5. Compile to a JAR
8. So… let’s write this UDF… 1. Start Eclipse 2. Create a new Java Project 3. Add pig.jar as an external Jar 4. Write our UDF class 5. Compile to a JAR
9. So… let’s write this UDF… 1. Start Eclipse 2. Create a new Java Project 3. Add pig.jar as an external Jar 4. Write our UDF class 5. Compile to a JAR
10. 1. Start Eclipse 2. Create a new Java Project 3. Add pig.jar as an external Jar 4. Write our UDF class 5. Compile to a JAR So… let’s write this UDF…
11. That’s it! www.newgrove.com