hadoop FederationStateStore 源码
haddop FederationStateStore 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/java/org/apache/hadoop/yarn/server/federation/store/FederationStateStore.java
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.yarn.server.federation.store;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.yarn.exceptions.YarnException;
import org.apache.hadoop.yarn.server.records.Version;
/**
* FederationStore extends the three interfaces used to coordinate the state of
* a federated cluster: {@link FederationApplicationHomeSubClusterStore},
* {@link FederationMembershipStateStore}, {@link FederationPolicyStore}, and
* {@link FederationReservationHomeSubClusterStore}.
*
*/
public interface FederationStateStore extends
FederationApplicationHomeSubClusterStore, FederationMembershipStateStore,
FederationPolicyStore, FederationReservationHomeSubClusterStore,
FederationDelegationTokenStateStore {
/**
* Initialize the FederationStore.
*
* @param conf the cluster configuration
* @throws YarnException if initialization fails
*/
void init(Configuration conf) throws YarnException;
/**
* Perform any cleanup operations of the StateStore.
*
* @throws Exception if cleanup fails
*/
void close() throws Exception;
/**
* Get the {@link Version} of the underlying federation state store client.
*
* @return the {@link Version} of the underlying federation store client
*/
Version getCurrentVersion();
/**
* Load the version information from the federation state store.
*
* @return the {@link Version} of the federation state store
*/
Version loadVersion();
}
相关信息
相关文章
hadoop FederationApplicationHomeSubClusterStore 源码
hadoop FederationDelegationTokenStateStore 源码
hadoop FederationMembershipStateStore 源码
hadoop FederationPolicyStore 源码
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