Download Sample Source Code
Procedure
To download the sample source code and build scripts, issue the following command:
git clone https://github.com/mapr/impala-udf-samples
The following table provides the source code file names and their descriptions:
File Name | Description |
udf-sample.h | Header file that declares the signature for a scalar UDF. |
udf-sample.cc | Sample source for a simple UDF that adds two integers. |
udf-sample-test.cc | Basic unit tests for the sample UDF. |
uda-sample.h | Header file that declares signature for sample aggregate functions. |
uda-sample.cc | Sample source for simple UDAFs that show how to manage state transitions as underlying are called during various phases of query processing. |
uda-sample-test.cc | Basic unit tests for the sample UDAFs. |