Package org.apache.flink.runtime.state

Class LocalSnapshotDirectoryProviderImpl

java.lang.Object

org.apache.flink.runtime.state.LocalSnapshotDirectoryProviderImpl

All Implemented Interfaces:

Serializable, LocalSnapshotDirectoryProvider

public class LocalSnapshotDirectoryProviderImpl
extends Object
implements LocalSnapshotDirectoryProvider

Implementation of LocalSnapshotDirectoryProvider.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
LocalSnapshotDirectoryProviderImpl(File[] allocationBaseDirs, org.apache.flink.api.common.JobID jobID, JobVertexID jobVertexID, int subtaskIndex)
LocalSnapshotDirectoryProviderImpl(File allocationBaseDir, org.apache.flink.api.common.JobID jobID, JobVertexID jobVertexID, int subtaskIndex)

Method Summary

Modifier and Type	Method	Description
File	allocationBaseDirectory(long checkpointId)	Returns the local state allocation base directory for given checkpoint id w.r.t. our rotation over all available allocation base directories.
int	allocationBaseDirsCount()	Returns the total number of allocation base directories.
File	selectAllocationBaseDirectory(int idx)	Returns a specific allocation base directory.
File	selectSubtaskBaseDirectory(int idx)	Returns a specific subtask base directory.
File	subtaskBaseDirectory(long checkpointId)	Returns the local state directory for the owning subtask the given checkpoint id w.r.t. our rotation over all available available allocation base directories.
File	subtaskSpecificCheckpointDirectory(long checkpointId)	Returns the local state directory for the specific operator subtask and the given checkpoint id w.r.t. our rotation over all available root dirs.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalSnapshotDirectoryProviderImpl

public LocalSnapshotDirectoryProviderImpl(File allocationBaseDir,
                                          @Nonnull
                                          org.apache.flink.api.common.JobID jobID,
                                          @Nonnull
                                          JobVertexID jobVertexID,
                                          @Nonnegative
                                          int subtaskIndex)

LocalSnapshotDirectoryProviderImpl

public LocalSnapshotDirectoryProviderImpl(@Nonnull
                                          File[] allocationBaseDirs,
                                          @Nonnull
                                          org.apache.flink.api.common.JobID jobID,
                                          @Nonnull
                                          JobVertexID jobVertexID,
                                          @Nonnegative
                                          int subtaskIndex)

Method Detail

allocationBaseDirectory

public File allocationBaseDirectory(long checkpointId)

Description copied from interface: LocalSnapshotDirectoryProvider

Returns the local state allocation base directory for given checkpoint id w.r.t. our rotation over all available allocation base directories.

Specified by:

allocationBaseDirectory in interface LocalSnapshotDirectoryProvider

subtaskBaseDirectory

public File subtaskBaseDirectory(long checkpointId)

Description copied from interface: LocalSnapshotDirectoryProvider

Returns the local state directory for the owning subtask the given checkpoint id w.r.t. our rotation over all available available allocation base directories. This directory is contained in the directory returned by LocalSnapshotDirectoryProvider.allocationBaseDirectory(long) for the same checkpoint id.

Specified by:

subtaskBaseDirectory in interface LocalSnapshotDirectoryProvider

subtaskSpecificCheckpointDirectory

public File subtaskSpecificCheckpointDirectory(long checkpointId)

Description copied from interface: LocalSnapshotDirectoryProvider

Returns the local state directory for the specific operator subtask and the given checkpoint id w.r.t. our rotation over all available root dirs. This directory is contained in the directory returned by LocalSnapshotDirectoryProvider.subtaskBaseDirectory(long) for the same checkpoint id.

Specified by:

subtaskSpecificCheckpointDirectory in interface LocalSnapshotDirectoryProvider

selectAllocationBaseDirectory

public File selectAllocationBaseDirectory(int idx)

Description copied from interface: LocalSnapshotDirectoryProvider

Returns a specific allocation base directory. The index must be between 0 (incl.) and LocalSnapshotDirectoryProvider.allocationBaseDirsCount() (excl.).

Specified by:

selectAllocationBaseDirectory in interface LocalSnapshotDirectoryProvider

selectSubtaskBaseDirectory

public File selectSubtaskBaseDirectory(int idx)

Description copied from interface: LocalSnapshotDirectoryProvider

Returns a specific subtask base directory. The index must be between 0 (incl.) and LocalSnapshotDirectoryProvider.allocationBaseDirsCount() (excl.). This directory is direct a child of LocalSnapshotDirectoryProvider.selectSubtaskBaseDirectory(int) given the same index.

Specified by:

selectSubtaskBaseDirectory in interface LocalSnapshotDirectoryProvider

allocationBaseDirsCount

public int allocationBaseDirsCount()

Description copied from interface: LocalSnapshotDirectoryProvider

Returns the total number of allocation base directories.

Specified by:

allocationBaseDirsCount in interface LocalSnapshotDirectoryProvider

toString

public String toString()

Overrides:

toString in class Object