Package org.apache.flink.runtime.taskexecutor.slot

Class FileSlotAllocationSnapshotPersistenceService

java.lang.Object

org.apache.flink.runtime.taskexecutor.slot.FileSlotAllocationSnapshotPersistenceService

All Implemented Interfaces:

SlotAllocationSnapshotPersistenceService

public class FileSlotAllocationSnapshotPersistenceService
extends Object
implements SlotAllocationSnapshotPersistenceService

File based SlotAllocationSnapshotPersistenceService that persists the SlotAllocationSnapshot as local files.

Constructor Summary

Constructors

Constructor	Description
FileSlotAllocationSnapshotPersistenceService(File slotAllocationSnapshotDirectory)

Method Summary

Modifier and Type	Method	Description
void	deleteAllocationSnapshot(int slotIndex)	Delete the slot allocation snapshot identified by the slot index.
Collection<SlotAllocationSnapshot>	loadAllocationSnapshots()	Load all persisted slot allocation snapshots.
void	persistAllocationSnapshot(SlotAllocationSnapshot slotAllocationSnapshot)	Persist the given slot allocation snapshot.

Methods inherited from class java.lang.Object

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

Constructor Details

FileSlotAllocationSnapshotPersistenceService

public FileSlotAllocationSnapshotPersistenceService(File slotAllocationSnapshotDirectory)

Method Details

persistAllocationSnapshot

public void persistAllocationSnapshot(SlotAllocationSnapshot slotAllocationSnapshot)
                               throws IOException

Description copied from interface: SlotAllocationSnapshotPersistenceService

Persist the given slot allocation snapshot.

Specified by:

persistAllocationSnapshot in interface SlotAllocationSnapshotPersistenceService

Parameters:

slotAllocationSnapshot - slot allocation snapshot to persist

Throws:

IOException - if the slot allocation snapshot cannot be persisted

deleteAllocationSnapshot

public void deleteAllocationSnapshot(int slotIndex)

Description copied from interface: SlotAllocationSnapshotPersistenceService

Delete the slot allocation snapshot identified by the slot index.

Specified by:

deleteAllocationSnapshot in interface SlotAllocationSnapshotPersistenceService

Parameters:

slotIndex - identifying the slot allocation snapshot to delete

loadAllocationSnapshots

public Collection<SlotAllocationSnapshot> loadAllocationSnapshots()

Description copied from interface: SlotAllocationSnapshotPersistenceService

Load all persisted slot allocation snapshots.

Specified by:

loadAllocationSnapshots in interface SlotAllocationSnapshotPersistenceService

Returns:

loaded slot allocations snapshots