Package org.apache.flink.runtime.state

Class ChannelStateHelper

java.lang.Object

org.apache.flink.runtime.state.ChannelStateHelper

public final class ChannelStateHelper
extends Object

Utility class for channel info serialization and conversions between single channel state handle and merged state handle.

Field Summary

Fields

Modifier and Type	Field	Description
static org.apache.flink.util.function.FunctionWithException<DataInputStream,InputChannelInfo,IOException>	INPUT_CHANNEL_INFO_READER
static org.apache.flink.util.function.BiConsumerWithException<InputChannelInfo,DataOutputStream,IOException>	INPUT_CHANNEL_INFO_WRITER
static org.apache.flink.util.function.FunctionWithException<DataInputStream,ResultSubpartitionInfo,IOException>	RESULT_SUBPARTITION_INFO_READER
static org.apache.flink.util.function.BiConsumerWithException<ResultSubpartitionInfo,DataOutputStream,IOException>	RESULT_SUBPARTITION_INFO_WRITER

Method Summary

Modifier and Type	Method	Description
static StateObjectCollection<InputStateHandle>	castToInputStateCollection(Collection<InputChannelStateHandle> handles)
static StateObjectCollection<OutputStateHandle>	castToOutputStateCollection(Collection<ResultSubpartitionStateHandle> handles)
static Stream<StreamStateHandle>	collectUniqueDisposableInChannelState(Stream<StateObjectCollection<? extends ChannelState>> stateCollections)
static StateObjectCollection<InputChannelStateHandle>	extractUnmergedInputHandles(OperatorSubtaskState subtaskState)
static StateObjectCollection<ResultSubpartitionStateHandle>	extractUnmergedOutputHandles(OperatorSubtaskState subtaskState)
static StateObjectCollection<InputStateHandle>	mergeInputStateCollection(Collection<InputChannelStateHandle> handles)
static StateObjectCollection<OutputStateHandle>	mergeOutputStateCollection(Collection<ResultSubpartitionStateHandle> handles)

Methods inherited from class java.lang.Object

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

Field Detail

RESULT_SUBPARTITION_INFO_WRITER

public static final org.apache.flink.util.function.BiConsumerWithException<ResultSubpartitionInfo,DataOutputStream,IOException> RESULT_SUBPARTITION_INFO_WRITER

INPUT_CHANNEL_INFO_WRITER

public static final org.apache.flink.util.function.BiConsumerWithException<InputChannelInfo,DataOutputStream,IOException> INPUT_CHANNEL_INFO_WRITER

RESULT_SUBPARTITION_INFO_READER

public static final org.apache.flink.util.function.FunctionWithException<DataInputStream,ResultSubpartitionInfo,IOException> RESULT_SUBPARTITION_INFO_READER

INPUT_CHANNEL_INFO_READER

public static final org.apache.flink.util.function.FunctionWithException<DataInputStream,InputChannelInfo,IOException> INPUT_CHANNEL_INFO_READER

Method Detail

collectUniqueDisposableInChannelState

public static Stream<StreamStateHandle> collectUniqueDisposableInChannelState(Stream<StateObjectCollection<? extends ChannelState>> stateCollections)

castToInputStateCollection

public static StateObjectCollection<InputStateHandle> castToInputStateCollection(Collection<InputChannelStateHandle> handles)

castToOutputStateCollection

public static StateObjectCollection<OutputStateHandle> castToOutputStateCollection(Collection<ResultSubpartitionStateHandle> handles)

mergeInputStateCollection

public static StateObjectCollection<InputStateHandle> mergeInputStateCollection(Collection<InputChannelStateHandle> handles)

mergeOutputStateCollection

public static StateObjectCollection<OutputStateHandle> mergeOutputStateCollection(Collection<ResultSubpartitionStateHandle> handles)

extractUnmergedInputHandles

public static StateObjectCollection<InputChannelStateHandle> extractUnmergedInputHandles(OperatorSubtaskState subtaskState)

extractUnmergedOutputHandles

public static StateObjectCollection<ResultSubpartitionStateHandle> extractUnmergedOutputHandles(OperatorSubtaskState subtaskState)