org.apache.beam.examples.cookbook

Class MaxPerKeyExamples

java.lang.Object

org.apache.beam.examples.cookbook.MaxPerKeyExamples

public class MaxPerKeyExamples
extends java.lang.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.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	MaxPerKeyExamples.Options Options supported by MaxPerKeyExamples.

Constructor Summary

Constructors

Constructor and Description
MaxPerKeyExamples()

Method Summary

Modifier and Type	Method and Description
static void	main(java.lang.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(java.lang.String[] args)
                 throws java.lang.Exception

Throws:

java.lang.Exception