本文整理汇总了Java中org.apache.hadoop.hdfs.DistributedFileSystem.metaSave方法的典型用法代码示例。如果您正苦于以下问题：Java DistributedFileSystem.metaSave方法的具体用法？Java DistributedFileSystem.metaSave怎么用？Java DistributedFileSystem.metaSave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.metaSave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: metaSave
import org.apache.hadoop.hdfs.DistributedFileSystem; //导入方法依赖的package包/类
/**
* Dumps DFS data structures into specified file.
* Usage: hdfs dfsadmin -metasave filename
* @param argv List of of command line parameters.
* @param idx The index of the command that is being processed.
* @exception IOException if an error occurred while accessing
* the file or path.
*/
public int metaSave(String[] argv, int idx) throws IOException {
String pathname = argv[idx];
DistributedFileSystem dfs = getDFS();
Configuration dfsConf = dfs.getConf();
URI dfsUri = dfs.getUri();
boolean isHaEnabled = HAUtil.isLogicalUri(dfsConf, dfsUri);
if (isHaEnabled) {
String nsId = dfsUri.getHost();
List<ProxyAndInfo<ClientProtocol>> proxies =
HAUtil.getProxiesForAllNameNodesInNameservice(dfsConf,
nsId, ClientProtocol.class);
for (ProxyAndInfo<ClientProtocol> proxy : proxies) {
proxy.getProxy().metaSave(pathname);
System.out.println("Created metasave file " + pathname + " in the log "
+ "directory of namenode " + proxy.getAddress());
}
} else {
dfs.metaSave(pathname);
System.out.println("Created metasave file " + pathname + " in the log " +
"directory of namenode " + dfs.getUri());
}
return 0;
}