Package org.apache.flink.runtime.state

Class StateSnapshotContextSynchronousImpl

java.lang.Object

org.apache.flink.runtime.state.StateSnapshotContextSynchronousImpl

All Implemented Interfaces:

FunctionSnapshotContext, ManagedSnapshotContext, StateSnapshotContext

public class StateSnapshotContextSynchronousImpl
extends Object
implements StateSnapshotContext

This class is a default implementation for StateSnapshotContext.

Field Summary

Fields

Modifier and Type	Field	Description
protected RunnableFuture<SnapshotResult<KeyedStateHandle>>	keyedStateCheckpointClosingFuture
protected RunnableFuture<SnapshotResult<OperatorStateHandle>>	operatorStateCheckpointClosingFuture

Constructor Summary

Constructors

Constructor	Description
StateSnapshotContextSynchronousImpl(long checkpointId, long checkpointTimestamp)
StateSnapshotContextSynchronousImpl(long checkpointId, long checkpointTimestamp, CheckpointStreamFactory streamFactory, KeyGroupRange keyGroupRange, org.apache.flink.core.fs.CloseableRegistry closableRegistry)

Method Summary

Modifier and Type	Method	Description
void	closeExceptionally()
long	getCheckpointId()	Returns the ID of the checkpoint for which the snapshot is taken.
long	getCheckpointTimestamp()	Returns timestamp (wall clock time) when the master node triggered the checkpoint for which the state snapshot is taken.
RunnableFuture<SnapshotResult<KeyedStateHandle>>	getKeyedStateStreamFuture()
RunnableFuture<SnapshotResult<OperatorStateHandle>>	getOperatorStateStreamFuture()
KeyedStateCheckpointOutputStream	getRawKeyedOperatorStateOutput()	Returns an output stream for keyed state
OperatorStateCheckpointOutputStream	getRawOperatorStateOutput()	Returns an output stream for operator state

Methods inherited from class java.lang.Object

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

Field Details

keyedStateCheckpointClosingFuture

protected RunnableFuture<SnapshotResult<KeyedStateHandle>> keyedStateCheckpointClosingFuture

operatorStateCheckpointClosingFuture

protected RunnableFuture<SnapshotResult<OperatorStateHandle>> operatorStateCheckpointClosingFuture

Constructor Details

StateSnapshotContextSynchronousImpl

@VisibleForTesting
public StateSnapshotContextSynchronousImpl(long checkpointId,
 long checkpointTimestamp)

StateSnapshotContextSynchronousImpl

public StateSnapshotContextSynchronousImpl(long checkpointId,
 long checkpointTimestamp,
 CheckpointStreamFactory streamFactory,
 KeyGroupRange keyGroupRange,
 org.apache.flink.core.fs.CloseableRegistry closableRegistry)

Method Details

getCheckpointId

public long getCheckpointId()

Description copied from interface: ManagedSnapshotContext

Returns the ID of the checkpoint for which the snapshot is taken.

The checkpoint ID is guaranteed to be strictly monotonously increasing across checkpoints. For two completed checkpoints A and B, ID_B > ID_A means that checkpoint B subsumes checkpoint A, i.e., checkpoint B contains a later state than checkpoint A.

Specified by:

getCheckpointId in interface ManagedSnapshotContext

getCheckpointTimestamp

public long getCheckpointTimestamp()

Description copied from interface: ManagedSnapshotContext

Returns timestamp (wall clock time) when the master node triggered the checkpoint for which the state snapshot is taken.

Specified by:

getCheckpointTimestamp in interface ManagedSnapshotContext

getRawKeyedOperatorStateOutput

public KeyedStateCheckpointOutputStream getRawKeyedOperatorStateOutput()
                                                                throws Exception

Description copied from interface: StateSnapshotContext

Returns an output stream for keyed state

Specified by:

getRawKeyedOperatorStateOutput in interface StateSnapshotContext

Throws:

Exception

getRawOperatorStateOutput

public OperatorStateCheckpointOutputStream getRawOperatorStateOutput()
                                                              throws Exception

Description copied from interface: StateSnapshotContext

Returns an output stream for operator state

Specified by:

getRawOperatorStateOutput in interface StateSnapshotContext

Throws:

Exception

getKeyedStateStreamFuture

@Nonnull
public RunnableFuture<SnapshotResult<KeyedStateHandle>> getKeyedStateStreamFuture()
                                                                           throws IOException

Throws:

IOException

getOperatorStateStreamFuture

@Nonnull
public RunnableFuture<SnapshotResult<OperatorStateHandle>> getOperatorStateStreamFuture()
                                                                                 throws IOException

Throws:

IOException

closeExceptionally

public void closeExceptionally()
                        throws IOException

Throws:

IOException