org.apache.flink.runtime.state

类 TaskLocalStateStoreImpl

java.lang.Object

org.apache.flink.runtime.state.TaskLocalStateStoreImpl

所有已实现的接口:

OwnedTaskLocalStateStore, TaskLocalStateStore

直接已知子类:

ChangelogTaskLocalStateStore

public class TaskLocalStateStoreImpl
extends Object
implements OwnedTaskLocalStateStore

Main implementation of a TaskLocalStateStore.

字段概要

字段

限定符和类型	字段和说明
protected AllocationID	allocationID AllocationID of the owning slot.
protected Executor	discardExecutor Executor that runs the discarding of released state objects.
protected boolean	disposed Status flag if this store was already discarded.
protected org.apache.flink.api.common.JobID	jobID JobID from the owning subtask.
protected JobVertexID	jobVertexID JobVertexID of the owning subtask.
protected LocalRecoveryConfig	localRecoveryConfig The configured mode for local recovery.
protected Object	lock Lock for synchronisation on the storage map and the discarded status.
protected SortedMap<Long,TaskStateSnapshot>	storedTaskStateByCheckpointID Maps checkpoint ids to local TaskStateSnapshots.
protected int	subtaskIndex Subtask index of the owning subtask.
static String	TASK_STATE_SNAPSHOT_FILENAME

构造器概要

构造器

构造器和说明
TaskLocalStateStoreImpl(org.apache.flink.api.common.JobID jobID, AllocationID allocationID, JobVertexID jobVertexID, int subtaskIndex, LocalRecoveryConfig localRecoveryConfig, Executor discardExecutor)

方法概要

限定符和类型	方法和说明
void	abortCheckpoint(long abortedCheckpointId) Notifies that the checkpoint with the given id was confirmed as aborted.
void	confirmCheckpoint(long confirmedCheckpointId) Notifies that the checkpoint with the given id was confirmed as complete.
protected void	deleteDirectory(File directory) Helper method to delete a directory.
CompletableFuture<Void>	dispose() Disposes the state of all local snapshots managed by this object.
protected File	getCheckpointDirectory(long checkpointId)
LocalRecoveryConfig	getLocalRecoveryConfig() Returns the LocalRecoveryConfig for this task local state store.
protected LocalRecoveryDirectoryProvider	getLocalRecoveryDirectoryProvider()
protected void	pruneCheckpoints(java.util.function.LongPredicate pruningChecker, boolean breakOnceCheckerFalse) Pruning the useless checkpoints, it should be called only when holding the lock.
void	pruneMatchingCheckpoints(java.util.function.LongPredicate matcher) Remove all checkpoints from the store that match the given predicate.
TaskStateSnapshot	retrieveLocalState(long checkpointID) Returns the local state that is stored under the given checkpoint id or null if nothing was stored under the id.
void	storeLocalState(long checkpointId, TaskStateSnapshot localState) Stores the local state for the given checkpoint id.
String	toString()

从类继承的方法 java.lang.Object

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

字段详细资料

TASK_STATE_SNAPSHOT_FILENAME

public static final String TASK_STATE_SNAPSHOT_FILENAME

另请参阅:

常量字段值

jobID

@Nonnull
protected final org.apache.flink.api.common.JobID jobID

JobID from the owning subtask.

allocationID

@Nonnull
protected final AllocationID allocationID

AllocationID of the owning slot.

jobVertexID

@Nonnull
protected final JobVertexID jobVertexID

JobVertexID of the owning subtask.

subtaskIndex

@Nonnegative
protected final int subtaskIndex

Subtask index of the owning subtask.

localRecoveryConfig

@Nonnull
protected final LocalRecoveryConfig localRecoveryConfig

The configured mode for local recovery.

discardExecutor

@Nonnull
protected final Executor discardExecutor

Executor that runs the discarding of released state objects.

lock

@Nonnull
protected final Object lock

Lock for synchronisation on the storage map and the discarded status.

disposed

protected boolean disposed

Status flag if this store was already discarded.

storedTaskStateByCheckpointID

@Nonnull
protected final SortedMap<Long,TaskStateSnapshot> storedTaskStateByCheckpointID

Maps checkpoint ids to local TaskStateSnapshots.

构造器详细资料

TaskLocalStateStoreImpl

public TaskLocalStateStoreImpl(@Nonnull
                               org.apache.flink.api.common.JobID jobID,
                               @Nonnull
                               AllocationID allocationID,
                               @Nonnull
                               JobVertexID jobVertexID,
                               @Nonnegative
                               int subtaskIndex,
                               @Nonnull
                               LocalRecoveryConfig localRecoveryConfig,
                               @Nonnull
                               Executor discardExecutor)

方法详细资料

storeLocalState

public void storeLocalState(@Nonnegative
                            long checkpointId,
                            @Nullable
                            TaskStateSnapshot localState)

从接口复制的说明: TaskLocalStateStore

Stores the local state for the given checkpoint id.

指定者:

storeLocalState 在接口中 TaskLocalStateStore

参数:

checkpointId - id for the checkpoint that created the local state that will be stored.

localState - the local state to store.

getCheckpointDirectory

protected File getCheckpointDirectory(long checkpointId)

getLocalRecoveryDirectoryProvider

protected LocalRecoveryDirectoryProvider getLocalRecoveryDirectoryProvider()

retrieveLocalState

@Nullable
public TaskStateSnapshot retrieveLocalState(long checkpointID)

从接口复制的说明: TaskLocalStateStore

Returns the local state that is stored under the given checkpoint id or null if nothing was stored under the id.

指定者:

retrieveLocalState 在接口中 TaskLocalStateStore

参数:

checkpointID - the checkpoint id by which we search for local state.

返回:

the local state found for the given checkpoint id. Can be null

getLocalRecoveryConfig

@Nonnull
public LocalRecoveryConfig getLocalRecoveryConfig()

从接口复制的说明: TaskLocalStateStore

Returns the LocalRecoveryConfig for this task local state store.

指定者:

getLocalRecoveryConfig 在接口中 TaskLocalStateStore

confirmCheckpoint

public void confirmCheckpoint(long confirmedCheckpointId)

从接口复制的说明: TaskLocalStateStore

Notifies that the checkpoint with the given id was confirmed as complete. This prunes the checkpoint history and removes all local states with a checkpoint id that is smaller than the newly confirmed checkpoint id.

指定者:

confirmCheckpoint 在接口中 TaskLocalStateStore

abortCheckpoint

public void abortCheckpoint(long abortedCheckpointId)

从接口复制的说明: TaskLocalStateStore

Notifies that the checkpoint with the given id was confirmed as aborted. This prunes the checkpoint history and removes states with a checkpoint id that is equal to the newly aborted checkpoint id.

指定者:

abortCheckpoint 在接口中 TaskLocalStateStore

pruneMatchingCheckpoints

public void pruneMatchingCheckpoints(@Nonnull
                                     java.util.function.LongPredicate matcher)

从接口复制的说明: TaskLocalStateStore

Remove all checkpoints from the store that match the given predicate.

指定者:

pruneMatchingCheckpoints 在接口中 TaskLocalStateStore

参数:

matcher - the predicate that selects the checkpoints for pruning.

dispose

public CompletableFuture<Void> dispose()

Disposes the state of all local snapshots managed by this object.

指定者:

dispose 在接口中 OwnedTaskLocalStateStore

deleteDirectory

protected void deleteDirectory(File directory)
                        throws IOException

Helper method to delete a directory.

抛出:

IOException

pruneCheckpoints

protected void pruneCheckpoints(java.util.function.LongPredicate pruningChecker,
                                boolean breakOnceCheckerFalse)

Pruning the useless checkpoints, it should be called only when holding the lock.

toString

public String toString()

覆盖:

toString 在类中 Object