org.apache.flink.state.changelog

Class ChangelogStateBackend

java.lang.Object

org.apache.flink.state.changelog.ChangelogStateBackend

All Implemented Interfaces:

Serializable, org.apache.flink.runtime.state.ConfigurableStateBackend, org.apache.flink.runtime.state.delegate.DelegatingStateBackend, org.apache.flink.runtime.state.StateBackend

@Internal
public class ChangelogStateBackend
extends Object
implements org.apache.flink.runtime.state.delegate.DelegatingStateBackend, org.apache.flink.runtime.state.ConfigurableStateBackend

This state backend holds the working state in the underlying delegatedStateBackend, and forwards state changes to State Changelog.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
org.apache.flink.runtime.state.StateBackend	configure(org.apache.flink.configuration.ReadableConfig config, ClassLoader classLoader)
<K> ChangelogKeyedStateBackend<K>	createKeyedStateBackend(org.apache.flink.runtime.execution.Environment env, org.apache.flink.api.common.JobID jobID, String operatorIdentifier, org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, int numberOfKeyGroups, org.apache.flink.runtime.state.KeyGroupRange keyGroupRange, org.apache.flink.runtime.query.TaskKvStateRegistry kvStateRegistry, org.apache.flink.runtime.state.ttl.TtlTimeProvider ttlTimeProvider, org.apache.flink.metrics.MetricGroup metricGroup, Collection<org.apache.flink.runtime.state.KeyedStateHandle> stateHandles, org.apache.flink.core.fs.CloseableRegistry cancelStreamRegistry)
<K> org.apache.flink.runtime.state.CheckpointableKeyedStateBackend<K>	createKeyedStateBackend(org.apache.flink.runtime.execution.Environment env, org.apache.flink.api.common.JobID jobID, String operatorIdentifier, org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, int numberOfKeyGroups, org.apache.flink.runtime.state.KeyGroupRange keyGroupRange, org.apache.flink.runtime.query.TaskKvStateRegistry kvStateRegistry, org.apache.flink.runtime.state.ttl.TtlTimeProvider ttlTimeProvider, org.apache.flink.metrics.MetricGroup metricGroup, Collection<org.apache.flink.runtime.state.KeyedStateHandle> stateHandles, org.apache.flink.core.fs.CloseableRegistry cancelStreamRegistry, double managedMemoryFraction)
org.apache.flink.runtime.state.OperatorStateBackend	createOperatorStateBackend(org.apache.flink.runtime.execution.Environment env, String operatorIdentifier, Collection<org.apache.flink.runtime.state.OperatorStateHandle> stateHandles, org.apache.flink.core.fs.CloseableRegistry cancelStreamRegistry)
org.apache.flink.runtime.state.StateBackend	getDelegatedStateBackend()
boolean	useManagedMemory()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.flink.runtime.state.StateBackend

supportsNoClaimRestoreMode, supportsSavepointFormat

Method Detail

createKeyedStateBackend

public <K> ChangelogKeyedStateBackend<K> createKeyedStateBackend(org.apache.flink.runtime.execution.Environment env,
                                                                 org.apache.flink.api.common.JobID jobID,
                                                                 String operatorIdentifier,
                                                                 org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                                                                 int numberOfKeyGroups,
                                                                 org.apache.flink.runtime.state.KeyGroupRange keyGroupRange,
                                                                 org.apache.flink.runtime.query.TaskKvStateRegistry kvStateRegistry,
                                                                 org.apache.flink.runtime.state.ttl.TtlTimeProvider ttlTimeProvider,
                                                                 org.apache.flink.metrics.MetricGroup metricGroup,
                                                                 @Nonnull
                                                                 Collection<org.apache.flink.runtime.state.KeyedStateHandle> stateHandles,
                                                                 org.apache.flink.core.fs.CloseableRegistry cancelStreamRegistry)
                                                          throws Exception

Specified by:

createKeyedStateBackend in interface org.apache.flink.runtime.state.StateBackend

Throws:

Exception

createKeyedStateBackend

public <K> org.apache.flink.runtime.state.CheckpointableKeyedStateBackend<K> createKeyedStateBackend(org.apache.flink.runtime.execution.Environment env,
                                                                                                     org.apache.flink.api.common.JobID jobID,
                                                                                                     String operatorIdentifier,
                                                                                                     org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                                                                                                     int numberOfKeyGroups,
                                                                                                     org.apache.flink.runtime.state.KeyGroupRange keyGroupRange,
                                                                                                     org.apache.flink.runtime.query.TaskKvStateRegistry kvStateRegistry,
                                                                                                     org.apache.flink.runtime.state.ttl.TtlTimeProvider ttlTimeProvider,
                                                                                                     org.apache.flink.metrics.MetricGroup metricGroup,
                                                                                                     @Nonnull
                                                                                                     Collection<org.apache.flink.runtime.state.KeyedStateHandle> stateHandles,
                                                                                                     org.apache.flink.core.fs.CloseableRegistry cancelStreamRegistry,
                                                                                                     double managedMemoryFraction)
                                                                                              throws Exception

Specified by:

createKeyedStateBackend in interface org.apache.flink.runtime.state.StateBackend

Throws:

Exception

createOperatorStateBackend

public org.apache.flink.runtime.state.OperatorStateBackend createOperatorStateBackend(org.apache.flink.runtime.execution.Environment env,
                                                                                      String operatorIdentifier,
                                                                                      @Nonnull
                                                                                      Collection<org.apache.flink.runtime.state.OperatorStateHandle> stateHandles,
                                                                                      org.apache.flink.core.fs.CloseableRegistry cancelStreamRegistry)
                                                                               throws Exception

Specified by:

createOperatorStateBackend in interface org.apache.flink.runtime.state.StateBackend

Throws:

Exception

useManagedMemory

public boolean useManagedMemory()

Specified by:

useManagedMemory in interface org.apache.flink.runtime.state.StateBackend

getDelegatedStateBackend

public org.apache.flink.runtime.state.StateBackend getDelegatedStateBackend()

Specified by:

getDelegatedStateBackend in interface org.apache.flink.runtime.state.delegate.DelegatingStateBackend

configure

public org.apache.flink.runtime.state.StateBackend configure(org.apache.flink.configuration.ReadableConfig config,
                                                             ClassLoader classLoader)
                                                      throws org.apache.flink.configuration.IllegalConfigurationException

Specified by:

configure in interface org.apache.flink.runtime.state.ConfigurableStateBackend

Throws:

org.apache.flink.configuration.IllegalConfigurationException