本文整理汇总了Java中org.apache.hadoop.hdfs.DistributedFileSystem.finalizeUpgrade方法的典型用法代码示例。如果您正苦于以下问题：Java DistributedFileSystem.finalizeUpgrade方法的具体用法？Java DistributedFileSystem.finalizeUpgrade怎么用？Java DistributedFileSystem.finalizeUpgrade使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.hdfs.DistributedFileSystem的用法示例。
在下文中一共展示了DistributedFileSystem.finalizeUpgrade方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: finalizeUpgrade
import org.apache.hadoop.hdfs.DistributedFileSystem; //导入方法依赖的package包/类
/**
* Command to ask the namenode to finalize previously performed upgrade.
* Usage: hdfs dfsadmin -finalizeUpgrade
* @exception IOException
*/
public int finalizeUpgrade() throws IOException {
DistributedFileSystem dfs = getDFS();
Configuration dfsConf = dfs.getConf();
URI dfsUri = dfs.getUri();
boolean isHaAndLogicalUri = HAUtil.isLogicalUri(dfsConf, dfsUri);
if (isHaAndLogicalUri) {
// In the case of HA and logical URI, run finalizeUpgrade for all
// NNs in this nameservice.
String nsId = dfsUri.getHost();
List<ClientProtocol> namenodes =
HAUtil.getProxiesForAllNameNodesInNameservice(dfsConf, nsId);
if (!HAUtil.isAtLeastOneActive(namenodes)) {
throw new IOException("Cannot finalize with no NameNode active");
}
List<ProxyAndInfo<ClientProtocol>> proxies =
HAUtil.getProxiesForAllNameNodesInNameservice(dfsConf,
nsId, ClientProtocol.class);
for (ProxyAndInfo<ClientProtocol> proxy : proxies) {
proxy.getProxy().finalizeUpgrade();
System.out.println("Finalize upgrade successful for " +
proxy.getAddress());
}
} else {
dfs.finalizeUpgrade();
System.out.println("Finalize upgrade successful");
}
return 0;
}