org.apache.beam.examples.cookbook

Class MaxPerKeyExamples

java.lang.Object

org.apache.beam.examples.cookbook.MaxPerKeyExamples

public class MaxPerKeyExamples
extends Object

An example that reads the public samples of weather data from BigQuery, and finds the maximum temperature ('mean_temp') for each month.

Concepts: The 'Max' statistical combination function, and how to find the max per key group.

Note: Before running this example, you must create a BigQuery dataset to contain your output table.

To execute this pipeline locally, specify the BigQuery table for the output with the form:

   --output=YOUR_PROJECT_ID:DATASET_ID.TABLE_ID
 

To change the runner, specify:

   --runner=YOUR_SELECTED_RUNNER
 

See examples/java/README.md for instructions about how to configure different runners.

The BigQuery input table defaults to clouddataflow-readonly:samples.weather_stations and can be overridden with --input.

Constructor Summary

Constructors

Constructor and Description
MaxPerKeyExamples()

Method Summary

Modifier and Type	Method and Description
static void	main(String[] args)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MaxPerKeyExamples

public MaxPerKeyExamples()

Method Detail

main

public static void main(String[] args)
                 throws Exception

Throws:

Exception