本文整理匯總了Java中org.apache.hadoop.hdfs.DistributedFileSystem.finalizeUpgrade方法的典型用法代碼示例。如果您正苦於以下問題：Java DistributedFileSystem.finalizeUpgrade方法的具體用法？Java DistributedFileSystem.finalizeUpgrade怎麽用？Java DistributedFileSystem.finalizeUpgrade使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類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個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: finalizeUpgrade
import org.apache.hadoop.hdfs.DistributedFileSystem; //導入方法依賴的package包/類
/**
* 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;
}