ShardCoordinator.StartableAllocationStrategy

All Superinterfaces:

NoSerializationVerificationNeeded, ShardCoordinator.ShardAllocationStrategy

All Known Implementing Classes:

ExternalShardAllocationStrategy

Enclosing class:

ShardCoordinator
```
public static interface ShardCoordinator.StartableAllocationStrategy
extends ShardCoordinator.ShardAllocationStrategy
```
Shard allocation strategy where start is called by the shard coordinator before any calls to rebalance or allocate shard. This can be used if there is any expensive initialization to be done that you do not want to to in the constructor as it will happen on every node rather than just the node that hosts the ShardCoordinator

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void start()
  Called before any calls to allocate/rebalance.
  - Methods inherited from interface akka.cluster.sharding.ShardCoordinator.ShardAllocationStrategy
    allocateShard, rebalance

- Method Detail
  - start
```
void start()
```
    Called before any calls to allocate/rebalance. Do not block. If asynchronous actions are required they can be started here and delay the Futures returned by allocate/rebalance.