hadoop package-info 源码
haddop package-info 代码
文件路径：/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/resolver/package-info.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.
*/
/**
* The resolver package contains indepedent data resolvers used in HDFS
* federation. The data resolvers collect data from the cluster, including from
* the state store. The resolvers expose APIs used by HDFS federation to collect
* aggregated, cached data for use in Real-time request processing. The
* resolvers are perf-sensitive and are used in the flow of the {@link
* org.apache.hadoop.hdfs.server.federation.router.RouterRpcServer
* RouterRpcServer} request path.
* <p>
* The principal resolvers are:
* <ul>
* <li>{@link ActiveNamenodeResolver} Real-time interface for locating the most
* recently active NN for a nameservice.
* <li>{@link FileSubclusterResolver} Real-time interface for determining the NN
* and local file path for a given file/folder based on the global namespace
* path.
* </ul>
*/
@InterfaceAudience.Private
@InterfaceStability.Evolving
package org.apache.hadoop.hdfs.server.federation.resolver;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
相关信息
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hadoop ActiveNamenodeResolver 源码
hadoop FederationNamenodeContext 源码
hadoop FederationNamenodeServiceState 源码
hadoop FederationNamespaceInfo 源码
hadoop FileSubclusterResolver 源码
hadoop MembershipNamenodeResolver 源码
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