本文整理汇总了Java中org.apache.hadoop.hdfs.DistributedFileSystem.setBalancerBandwidth方法的典型用法代码示例。如果您正苦于以下问题：Java DistributedFileSystem.setBalancerBandwidth方法的具体用法？Java DistributedFileSystem.setBalancerBandwidth怎么用？Java DistributedFileSystem.setBalancerBandwidth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.setBalancerBandwidth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: setBalancerBandwidth
import org.apache.hadoop.hdfs.DistributedFileSystem; //导入方法依赖的package包/类
/**
* Command to ask the namenode to set the balancer bandwidth for all of the
* datanodes.
* Usage: hdfs dfsadmin -setBalancerBandwidth bandwidth
* @param argv List of of command line parameters.
* @param idx The index of the command that is being processed.
* @exception IOException
*/
public int setBalancerBandwidth(String[] argv, int idx) throws IOException {
long bandwidth;
int exitCode = -1;
try {
bandwidth = Long.parseLong(argv[idx]);
} catch (NumberFormatException nfe) {
System.err.println("NumberFormatException: " + nfe.getMessage());
System.err.println("Usage: hdfs dfsadmin"
+ " [-setBalancerBandwidth <bandwidth in bytes per second>]");
return exitCode;
}
FileSystem fs = getFS();
if (!(fs instanceof DistributedFileSystem)) {
System.err.println("FileSystem is " + fs.getUri());
return exitCode;
}
DistributedFileSystem dfs = (DistributedFileSystem) fs;
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().setBalancerBandwidth(bandwidth);
System.out.println("Balancer bandwidth is set to " + bandwidth +
" for " + proxy.getAddress());
}
} else {
dfs.setBalancerBandwidth(bandwidth);
System.out.println("Balancer bandwidth is set to " + bandwidth);
}
exitCode = 0;
return exitCode;
}