hadoop DatanodeLocalInfo 源码
haddop DatanodeLocalInfo 代码
文件路径：/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/protocol/DatanodeLocalInfo.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.hdfs.protocol;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
/**
* Locally available datanode information
*/
@InterfaceAudience.Private
@InterfaceStability.Evolving
public class DatanodeLocalInfo {
private final String softwareVersion;
private final String configVersion;
private final long uptime; // datanode uptime in seconds.
public DatanodeLocalInfo(String softwareVersion,
String configVersion, long uptime) {
this.softwareVersion = softwareVersion;
this.configVersion = configVersion;
this.uptime = uptime;
}
/** get software version */
public String getSoftwareVersion() {
return this.softwareVersion;
}
/** get config version */
public String getConfigVersion() {
return this.configVersion;
}
/** get uptime */
public long getUptime() {
return this.uptime;
}
/** A formatted string for printing the status of the DataNode. */
public String getDatanodeLocalReport() {
return ("Uptime: " + getUptime())
+ ", Software version: " + getSoftwareVersion()
+ ", Config version: " + getConfigVersion();
}
}
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