| Package | Description | 
|---|---|
| org.apache.solr.client.solrj.cloud | Common classes for SolrCloud. | 
| org.apache.solr.client.solrj.cloud.autoscaling | Common classes for autoscaling parsing filtering nodes and sorting | 
| org.apache.solr.client.solrj.impl | Concrete implementations of client API classes. | 
| org.apache.solr.common | Common classes reused on both clients & server for dealing with  documents to be indexedandresult documents. | 
| org.apache.solr.common.cloud | Common Solr Cloud and ZooKeeper related classes reused on both clients & server. | 
| org.apache.solr.common.util | Common utility classes reused on both clients & server. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | DistribStateManagerThis interface represents a distributed state repository. | 
| interface  | NodeStateProviderThis interface models the access to node and replica information. | 
| interface  | SolrCloudManagerThis interface abstracts the access to a SolrCloud cluster, including interactions with Zookeeper, Solr
 and generic HTTP calls. | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | DelegatingCloudManagerBase class for overriding some behavior of  SolrCloudManager. | 
| class  | DelegatingClusterStateProviderBase class for overriding some behavior of  ClusterStateProvider | 
| class  | DelegatingDistribStateManager | 
| class  | DelegatingNodeStateProviderBase class for overriding some behavior of  NodeStateProvider. | 
| Modifier and Type | Interface and Description | 
|---|---|
| interface  | ClusterStateProvider | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | BaseHttpClusterStateProvider | 
| class  | Http2ClusterStateProvider | 
| class  | HttpClusterStateProvider | 
| class  | SolrClientCloudManagerClass that implements  SolrCloudManagerusing a SolrClient | 
| class  | SolrClientNodeStateProvider | 
| class  | ZkClientClusterStateProvider | 
| class  | ZkDistribStateManagerImplementation of  DistribStateManagerthat uses Zookeeper. | 
| Constructor and Description | 
|---|
| SolrCloseableLatch(int count,
                  SolrCloseable closeable) | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | NodesSysPropsCacherCaching other nodes system properties. | 
| class  | ZkStateReader | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | ObjectCacheSimple object cache with a type-safe accessor. | 
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