org.apache.flink.runtime.state.filesystem

类 FsMergingCheckpointStorageAccess

java.lang.Object

org.apache.flink.runtime.state.filesystem.AbstractFsCheckpointStorageAccess

org.apache.flink.runtime.state.filesystem.FsCheckpointStorageAccess

org.apache.flink.runtime.state.filesystem.FsMergingCheckpointStorageAccess

所有已实现的接口:

Closeable, AutoCloseable, CheckpointStorageAccess, CheckpointStorageCoordinatorView, CheckpointStorageWorkerView

public class FsMergingCheckpointStorageAccess
extends FsCheckpointStorageAccess
implements Closeable

An implementation of file merging checkpoint storage to file systems.

字段概要

从类继承的字段 org.apache.flink.runtime.state.filesystem.FsCheckpointStorageAccess

checkpointsDirectory, fileSizeThreshold, fileSystem, sharedStateDirectory, taskOwnedStateDirectory, writeBufferSize

从类继承的字段 org.apache.flink.runtime.state.filesystem.AbstractFsCheckpointStorageAccess

CHECKPOINT_DIR_PREFIX, CHECKPOINT_SHARED_STATE_DIR, CHECKPOINT_TASK_OWNED_STATE_DIR, METADATA_FILE_NAME

构造器概要

构造器

构造器和说明
FsMergingCheckpointStorageAccess(org.apache.flink.core.fs.Path checkpointBaseDirectory, org.apache.flink.core.fs.Path defaultSavepointDirectory, org.apache.flink.api.common.JobID jobId, int fileSizeThreshold, int writeBufferSize, FileMergingSnapshotManager fileMergingSnapshotManager, Environment environment)

方法概要

限定符和类型	方法和说明
void	close() This will be registered to resource closer of StreamTask.
void	initializeBaseLocationsForCheckpoint() Initializes the necessary prerequisites for storage locations of checkpoints.
CheckpointStreamFactory	resolveCheckpointStorageLocation(long checkpointId, CheckpointStorageLocationReference reference) Resolves a storage location reference into a CheckpointStreamFactory.

从类继承的方法 org.apache.flink.runtime.state.filesystem.FsCheckpointStorageAccess

createSavepointLocation, createTaskOwnedCheckpointStateToolset, createTaskOwnedStateStream, initializeLocationForCheckpoint, supportsHighlyAvailableStorage, toFileMergingStorage

从类继承的方法 org.apache.flink.runtime.state.filesystem.AbstractFsCheckpointStorageAccess

createCheckpointDirectory, decodePathFromReference, encodePathAsReference, getCheckpointDirectoryForJob, getDefaultSavepointDirectory, hasDefaultSavepointLocation, initializeLocationForSavepoint, resolveCheckpoint, resolveCheckpointPointer

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

FsMergingCheckpointStorageAccess

public FsMergingCheckpointStorageAccess(org.apache.flink.core.fs.Path checkpointBaseDirectory,
                                        @Nullable
                                        org.apache.flink.core.fs.Path defaultSavepointDirectory,
                                        org.apache.flink.api.common.JobID jobId,
                                        int fileSizeThreshold,
                                        int writeBufferSize,
                                        FileMergingSnapshotManager fileMergingSnapshotManager,
                                        Environment environment)
                                 throws IOException

抛出:

IOException

方法详细资料

initializeBaseLocationsForCheckpoint

public void initializeBaseLocationsForCheckpoint()
                                          throws IOException

从接口复制的说明: CheckpointStorageCoordinatorView

Initializes the necessary prerequisites for storage locations of checkpoints.

For file-based checkpoint storage, this method would initialize essential base checkpoint directories on checkpoint coordinator side and should be executed before calling CheckpointStorageCoordinatorView.initializeLocationForCheckpoint(long).

指定者:

initializeBaseLocationsForCheckpoint 在接口中 CheckpointStorageCoordinatorView

覆盖:

initializeBaseLocationsForCheckpoint 在类中 FsCheckpointStorageAccess

抛出:

IOException - Thrown, if these base storage locations cannot be initialized due to an I/O exception.

resolveCheckpointStorageLocation

public CheckpointStreamFactory resolveCheckpointStorageLocation(long checkpointId,
                                                                CheckpointStorageLocationReference reference)
                                                         throws IOException

从接口复制的说明: CheckpointStorageWorkerView

Resolves a storage location reference into a CheckpointStreamFactory.

The reference may be the default reference, in which case the method should return the default location, taking existing configuration and checkpoint ID into account.

指定者:

resolveCheckpointStorageLocation 在接口中 CheckpointStorageWorkerView

覆盖:

resolveCheckpointStorageLocation 在类中 FsCheckpointStorageAccess

参数:

checkpointId - The ID of the checkpoint that the location is initialized for.

reference - The checkpoint location reference.

返回:

A checkpoint storage location reflecting the reference and checkpoint ID.

抛出:

IOException - Thrown, if the storage location cannot be initialized from the reference.

close

public void close()

This will be registered to resource closer of StreamTask.

指定者:

close 在接口中 Closeable

指定者:

close 在接口中 AutoCloseable