Package org.apache.beam.runners.spark.util

Class SideInputReaderFactory

java.lang.Object

org.apache.beam.runners.spark.util.SideInputReaderFactory

public class SideInputReaderFactory
extends java.lang.Object

Utility class for creating and managing side input readers in the Spark runner.

This class provides factory methods to create appropriate SideInputReader implementations based on the execution mode (streaming or batch) to optimize side input access patterns.

Constructor Summary

Constructors

Constructor	Description
SideInputReaderFactory()

Method Summary

Modifier and Type	Method	Description
static org.apache.beam.runners.core.SideInputReader	create(boolean useStreamingSideInput, java.util.Map<org.apache.beam.sdk.values.TupleTag<?>,org.apache.beam.sdk.values.KV<org.apache.beam.sdk.values.WindowingStrategy<?,?>,SideInputBroadcast<?>>> sideInputs)	Creates and returns a SideInputReader based on the configuration.

Methods inherited from class java.lang.Object

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

Constructor Detail

SideInputReaderFactory

public SideInputReaderFactory()

Method Detail

create

public static org.apache.beam.runners.core.SideInputReader create(boolean useStreamingSideInput,
                                                                  java.util.Map<org.apache.beam.sdk.values.TupleTag<?>,org.apache.beam.sdk.values.KV<org.apache.beam.sdk.values.WindowingStrategy<?,?>,SideInputBroadcast<?>>> sideInputs)

Creates and returns a SideInputReader based on the configuration.

If streaming side inputs are enabled, returns a direct SparkSideInputReader. Otherwise, returns a cached version of the side input reader using CachedSideInputReader for better performance in batch processing.

Parameters:

useStreamingSideInput - Whether to use streaming side inputs

sideInputs - A map of side inputs with their windowing strategies and broadcasts

Returns:

A SideInputReader instance appropriate for the current configuration