org.apache.beam.runners.flink.translation.wrappers.streaming.state

Class FlinkBroadcastStateInternals<K>

java.lang.Object

org.apache.beam.runners.flink.translation.wrappers.streaming.state.FlinkBroadcastStateInternals<K>

All Implemented Interfaces:

org.apache.beam.runners.core.StateInternals

public class FlinkBroadcastStateInternals<K>
extends java.lang.Object
implements org.apache.beam.runners.core.StateInternals

StateInternals that uses a Flink OperatorStateBackend to manage the broadcast state. The state is the same on all parallel instances of the operator. So we just need store state of operator-0 in OperatorStateBackend.

Note: Ignore index of key. Mainly for SideInputs.

Constructor Summary

Constructors

Constructor and Description
FlinkBroadcastStateInternals(int indexInSubtaskGroup, org.apache.flink.runtime.state.OperatorStateBackend stateBackend, org.apache.beam.runners.core.construction.SerializablePipelineOptions pipelineOptions)

Method Summary

Modifier and Type	Method and Description
K	getKey()
<T extends org.apache.beam.sdk.state.State> T	state(org.apache.beam.runners.core.StateNamespace namespace, org.apache.beam.runners.core.StateTag<T> address, org.apache.beam.sdk.state.StateContext<?> context)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.beam.runners.core.StateInternals

state

Constructor Detail

FlinkBroadcastStateInternals

public FlinkBroadcastStateInternals(int indexInSubtaskGroup,
                                    org.apache.flink.runtime.state.OperatorStateBackend stateBackend,
                                    org.apache.beam.runners.core.construction.SerializablePipelineOptions pipelineOptions)

Method Detail

getKey

public K getKey()

Specified by:

getKey in interface org.apache.beam.runners.core.StateInternals

state

public <T extends org.apache.beam.sdk.state.State> T state(org.apache.beam.runners.core.StateNamespace namespace,
                                                           org.apache.beam.runners.core.StateTag<T> address,
                                                           org.apache.beam.sdk.state.StateContext<?> context)

Specified by:

state in interface org.apache.beam.runners.core.StateInternals