org.apache.flink.state.changelog

Class ChangelogStateBackend

java.lang.Object

org.apache.flink.state.changelog.AbstractChangelogStateBackend

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 AbstractChangelogStateBackend
implements 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

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.flink.runtime.state.StateBackend

org.apache.flink.runtime.state.StateBackend.CustomInitializationMetrics, org.apache.flink.runtime.state.StateBackend.KeyedStateBackendParameters<K>, org.apache.flink.runtime.state.StateBackend.OperatorStateBackendParameters

Field Summary

Fields inherited from class org.apache.flink.state.changelog.AbstractChangelogStateBackend

delegatedStateBackend

Method Summary

Modifier and Type	Method and Description
org.apache.flink.runtime.state.StateBackend	configure(org.apache.flink.configuration.ReadableConfig config, ClassLoader classLoader)
protected <K> org.apache.flink.runtime.state.CheckpointableKeyedStateBackend<K>	restore(org.apache.flink.runtime.execution.Environment env, String operatorIdentifier, org.apache.flink.runtime.state.KeyGroupRange keyGroupRange, org.apache.flink.runtime.state.ttl.TtlTimeProvider ttlTimeProvider, org.apache.flink.metrics.MetricGroup metricGroup, Collection<org.apache.flink.runtime.state.changelog.ChangelogStateBackendHandle> stateBackendHandles, ChangelogBackendRestoreOperation.BaseBackendBuilder<K> baseBackendBuilder)

Methods inherited from class org.apache.flink.state.changelog.AbstractChangelogStateBackend

createKeyedStateBackend, createOperatorStateBackend, getDelegatedStateBackend, supportsSavepointFormat, 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

createAsyncKeyedStateBackend, createKeyedStateBackend, createOperatorStateBackend, getName, supportsAsyncKeyedStateBackend, supportsNoClaimRestoreMode, supportsSavepointFormat, useManagedMemory

Methods inherited from interface org.apache.flink.runtime.state.delegate.DelegatingStateBackend

getName

Method Detail

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

restore

protected <K> org.apache.flink.runtime.state.CheckpointableKeyedStateBackend<K> restore(org.apache.flink.runtime.execution.Environment env,
                                                                                        String operatorIdentifier,
                                                                                        org.apache.flink.runtime.state.KeyGroupRange keyGroupRange,
                                                                                        org.apache.flink.runtime.state.ttl.TtlTimeProvider ttlTimeProvider,
                                                                                        org.apache.flink.metrics.MetricGroup metricGroup,
                                                                                        Collection<org.apache.flink.runtime.state.changelog.ChangelogStateBackendHandle> stateBackendHandles,
                                                                                        ChangelogBackendRestoreOperation.BaseBackendBuilder<K> baseBackendBuilder)
                                                                                 throws Exception

Specified by:

restore in class AbstractChangelogStateBackend

Throws:

Exception