org.apache.flink.streaming.api.operators

类 StreamTaskStateInitializerImpl

java.lang.Object

org.apache.flink.streaming.api.operators.StreamTaskStateInitializerImpl

所有已实现的接口:

StreamTaskStateInitializer

public class StreamTaskStateInitializerImpl
extends Object
implements StreamTaskStateInitializer

This class is the main implementation of a StreamTaskStateInitializer. This class obtains the state to create StreamOperatorStateContext objects for stream operators from the TaskStateManager of the task that runs the stream task and hence the operator.

This implementation operates on top a TaskStateManager, from which it receives everything required to restore state in the backends from checkpoints or savepoints.

构造器概要

构造器

构造器和说明
StreamTaskStateInitializerImpl(org.apache.flink.runtime.execution.Environment environment, org.apache.flink.runtime.state.StateBackend stateBackend)
StreamTaskStateInitializerImpl(org.apache.flink.runtime.execution.Environment environment, org.apache.flink.runtime.state.StateBackend stateBackend, org.apache.flink.runtime.state.ttl.TtlTimeProvider ttlTimeProvider)

方法概要

限定符和类型	方法和说明
protected <K> InternalTimeServiceManager<K>	internalTimeServiceManager(org.apache.flink.runtime.state.AbstractKeyedStateBackend<K> keyedStatedBackend, KeyContext keyContext, ProcessingTimeService processingTimeService, Iterable<org.apache.flink.runtime.state.KeyGroupStatePartitionStreamProvider> rawKeyedStates)
protected <K> org.apache.flink.runtime.state.AbstractKeyedStateBackend<K>	keyedStatedBackend(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer, String operatorIdentifierText, org.apache.flink.runtime.checkpoint.PrioritizedOperatorSubtaskState prioritizedOperatorSubtaskStates, org.apache.flink.core.fs.CloseableRegistry backendCloseableRegistry, org.apache.flink.metrics.MetricGroup metricGroup)
protected org.apache.flink.runtime.state.OperatorStateBackend	operatorStateBackend(String operatorIdentifierText, org.apache.flink.runtime.checkpoint.PrioritizedOperatorSubtaskState prioritizedOperatorSubtaskStates, org.apache.flink.core.fs.CloseableRegistry backendCloseableRegistry)
protected org.apache.flink.util.CloseableIterable<org.apache.flink.runtime.state.KeyGroupStatePartitionStreamProvider>	rawKeyedStateInputs(Iterator<org.apache.flink.runtime.checkpoint.StateObjectCollection<org.apache.flink.runtime.state.KeyedStateHandle>> restoreStateAlternatives)
protected org.apache.flink.util.CloseableIterable<org.apache.flink.runtime.state.StatePartitionStreamProvider>	rawOperatorStateInputs(Iterator<org.apache.flink.runtime.checkpoint.StateObjectCollection<org.apache.flink.runtime.state.OperatorStateHandle>> restoreStateAlternatives)
StreamOperatorStateContext	streamOperatorStateContext(org.apache.flink.runtime.jobgraph.OperatorID operatorID, String operatorClassName, ProcessingTimeService processingTimeService, KeyContext keyContext, org.apache.flink.api.common.typeutils.TypeSerializer<?> keySerializer, org.apache.flink.core.fs.CloseableRegistry streamTaskCloseableRegistry, org.apache.flink.metrics.MetricGroup metricGroup, boolean isUsingCustomRawKeyedState) Returns the StreamOperatorStateContext for an AbstractStreamOperator that runs in the stream task that owns this manager.

从类继承的方法 java.lang.Object

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

构造器详细资料

StreamTaskStateInitializerImpl

public StreamTaskStateInitializerImpl(org.apache.flink.runtime.execution.Environment environment,
                                      org.apache.flink.runtime.state.StateBackend stateBackend)

StreamTaskStateInitializerImpl

@VisibleForTesting
public StreamTaskStateInitializerImpl(org.apache.flink.runtime.execution.Environment environment,
                                                         org.apache.flink.runtime.state.StateBackend stateBackend,
                                                         org.apache.flink.runtime.state.ttl.TtlTimeProvider ttlTimeProvider)

方法详细资料

streamOperatorStateContext

public StreamOperatorStateContext streamOperatorStateContext(@Nonnull
                                                             org.apache.flink.runtime.jobgraph.OperatorID operatorID,
                                                             @Nonnull
                                                             String operatorClassName,
                                                             @Nonnull
                                                             ProcessingTimeService processingTimeService,
                                                             @Nonnull
                                                             KeyContext keyContext,
                                                             @Nullable
                                                             org.apache.flink.api.common.typeutils.TypeSerializer<?> keySerializer,
                                                             @Nonnull
                                                             org.apache.flink.core.fs.CloseableRegistry streamTaskCloseableRegistry,
                                                             @Nonnull
                                                             org.apache.flink.metrics.MetricGroup metricGroup,
                                                             boolean isUsingCustomRawKeyedState)
                                                      throws Exception

从接口复制的说明: StreamTaskStateInitializer

Returns the StreamOperatorStateContext for an AbstractStreamOperator that runs in the stream task that owns this manager.

指定者:

streamOperatorStateContext 在接口中 StreamTaskStateInitializer

参数:

operatorID - the id of the operator for which the context is created. Cannot be null.

operatorClassName - the classname of the operator instance for which the context is created. Cannot be null.

keyContext - the key context of the operator instance for which the context is created Cannot be null.

keySerializer - the key-serializer for the operator. Can be null.

streamTaskCloseableRegistry - the closeable registry to which created closeable objects will be registered.

metricGroup - the parent metric group for all statebackend metrics

isUsingCustomRawKeyedState - flag indicating whether or not the AbstractStreamOperator is writing custom raw keyed state.

返回:

a context from which the given operator can initialize everything related to state.

抛出:

Exception - when something went wrong while creating the context.

internalTimeServiceManager

protected <K> InternalTimeServiceManager<K> internalTimeServiceManager(org.apache.flink.runtime.state.AbstractKeyedStateBackend<K> keyedStatedBackend,
                                                                       KeyContext keyContext,
                                                                       ProcessingTimeService processingTimeService,
                                                                       Iterable<org.apache.flink.runtime.state.KeyGroupStatePartitionStreamProvider> rawKeyedStates)
                                                                throws Exception

抛出:

Exception

operatorStateBackend

protected org.apache.flink.runtime.state.OperatorStateBackend operatorStateBackend(String operatorIdentifierText,
                                                                                   org.apache.flink.runtime.checkpoint.PrioritizedOperatorSubtaskState prioritizedOperatorSubtaskStates,
                                                                                   org.apache.flink.core.fs.CloseableRegistry backendCloseableRegistry)
                                                                            throws Exception

抛出:

Exception

keyedStatedBackend

protected <K> org.apache.flink.runtime.state.AbstractKeyedStateBackend<K> keyedStatedBackend(org.apache.flink.api.common.typeutils.TypeSerializer<K> keySerializer,
                                                                                             String operatorIdentifierText,
                                                                                             org.apache.flink.runtime.checkpoint.PrioritizedOperatorSubtaskState prioritizedOperatorSubtaskStates,
                                                                                             org.apache.flink.core.fs.CloseableRegistry backendCloseableRegistry,
                                                                                             org.apache.flink.metrics.MetricGroup metricGroup)
                                                                                      throws Exception

抛出:

Exception

rawOperatorStateInputs

protected org.apache.flink.util.CloseableIterable<org.apache.flink.runtime.state.StatePartitionStreamProvider> rawOperatorStateInputs(Iterator<org.apache.flink.runtime.checkpoint.StateObjectCollection<org.apache.flink.runtime.state.OperatorStateHandle>> restoreStateAlternatives)

rawKeyedStateInputs

protected org.apache.flink.util.CloseableIterable<org.apache.flink.runtime.state.KeyGroupStatePartitionStreamProvider> rawKeyedStateInputs(Iterator<org.apache.flink.runtime.checkpoint.StateObjectCollection<org.apache.flink.runtime.state.KeyedStateHandle>> restoreStateAlternatives)