本文整理汇总了Java中org.apache.hadoop.hdfs.protocol.DatanodeInfo.getDfsUsed方法的典型用法代码示例。如果您正苦于以下问题：Java DatanodeInfo.getDfsUsed方法的具体用法？Java DatanodeInfo.getDfsUsed怎么用？Java DatanodeInfo.getDfsUsed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.protocol.DatanodeInfo的用法示例。
在下文中一共展示了DatanodeInfo.getDfsUsed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: waitForBalancer
import org.apache.hadoop.hdfs.protocol.DatanodeInfo; //导入方法依赖的package包/类
/**
* Wait until balanced: each datanode gives utilization within
* BALANCE_ALLOWED_VARIANCE of average
* @throws IOException
* @throws TimeoutException
*/
private void waitForBalancer(long totalUsedSpace, long totalCapacity)
throws IOException, TimeoutException {
long timeout = TIMEOUT;
long failtime = (timeout <= 0L) ? Long.MAX_VALUE
: System.currentTimeMillis() + timeout;
final double avgUtilization = ((double)totalUsedSpace) / totalCapacity;
boolean balanced;
do {
DatanodeInfo[] datanodeReport =
client.getDatanodeReport(DatanodeReportType.ALL);
assertEquals(datanodeReport.length, cluster.getDataNodes().size());
balanced = true;
for (DatanodeInfo datanode : datanodeReport) {
double nodeUtilization = ((double)datanode.getDfsUsed())
/ datanode.getCapacity();
if (Math.abs(avgUtilization - nodeUtilization) >
BALANCE_ALLOWED_VARIANCE) {
balanced = false;
if (System.currentTimeMillis() > failtime) {
throw new TimeoutException(
"Rebalancing expected avg utilization to become "
+ avgUtilization + ", but on datanode " + datanode
+ " it remains at " + nodeUtilization
+ " after more than " + TIMEOUT + " msec.");
}
try {
Thread.sleep(100);
} catch (InterruptedException ignored) {
}
break;
}
}
} while (!balanced);
}