| Package | Description | 
|---|---|
| org.apache.hadoop.yarn.server.federation.store | Licensed to the Apache Software Foundation (ASF) under one or more
 contributor license agreements. | 
| org.apache.hadoop.yarn.server.federation.store.impl | Licensed to the Apache Software Foundation (ASF) under one or more
 contributor license agreements. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | FederationStateStoreFederationStore extends the three interfaces used to coordinate the state of
 a federated cluster:  FederationApplicationHomeSubClusterStore,FederationMembershipStateStore, andFederationPolicyStore. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | MemoryFederationStateStoreIn-memory implementation of  FederationStateStore. | 
| class  | SQLFederationStateStoreSQL implementation of  FederationStateStore. | 
| class  | ZookeeperFederationStateStoreZooKeeper implementation of  FederationStateStore. | 
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