SlotAllocationSnapshotPersistenceService (Flink : Runtime 2.0-preview1 API)

All Known Implementing Classes:

FileSlotAllocationSnapshotPersistenceService, NoOpSlotAllocationSnapshotPersistenceService
```
public interface SlotAllocationSnapshotPersistenceService
```
Service for persisting SlotAllocationSnapshot.

Method Summary

All Methods Instance Methods Abstract Methods
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.

- Method Detail
  - persistAllocationSnapshot
```
void persistAllocationSnapshot(SlotAllocationSnapshot slotAllocationSnapshot)
                        throws IOException
```
    Persist the given slot allocation snapshot.
    
    Parameters:
    
    slotAllocationSnapshot - slot allocation snapshot to persist
    
    Throws:
    
    IOException - if the slot allocation snapshot cannot be persisted
  - deleteAllocationSnapshot
```
void deleteAllocationSnapshot(int slotIndex)
```
    Delete the slot allocation snapshot identified by the slot index.
    
    Parameters:
    
    slotIndex - identifying the slot allocation snapshot to delete
  - loadAllocationSnapshots
```
Collection<SlotAllocationSnapshot> loadAllocationSnapshots()
```
    Load all persisted slot allocation snapshots.
    
    Returns:
    
    loaded slot allocations snapshots