本文整理汇总了Java中org.apache.hadoop.hdfs.protocol.ClientProtocol.getStats方法的典型用法代码示例。如果您正苦于以下问题：Java ClientProtocol.getStats方法的具体用法？Java ClientProtocol.getStats怎么用？Java ClientProtocol.getStats使用的例子？那么恭喜您, 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.ClientProtocol的用法示例。
在下文中一共展示了ClientProtocol.getStats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: waitForHeartBeat
import org.apache.hadoop.hdfs.protocol.ClientProtocol; //导入方法依赖的package包/类
/**
* Wait until heartbeat gives expected results, within CAPACITY_ALLOWED_VARIANCE,
* summed over all nodes. Times out after TIMEOUT msec.
* @param expectedUsedSpace
* @param expectedTotalSpace
* @throws IOException - if getStats() fails
* @throws TimeoutException
*/
static void waitForHeartBeat(long expectedUsedSpace,
long expectedTotalSpace, ClientProtocol client, MiniDFSCluster cluster)
throws IOException, TimeoutException {
long timeout = TIMEOUT;
long failtime = (timeout <= 0L) ? Long.MAX_VALUE
: Time.monotonicNow() + timeout;
while (true) {
long[] status = client.getStats();
double totalSpaceVariance = Math.abs((double)status[0] - expectedTotalSpace)
/ expectedTotalSpace;
double usedSpaceVariance = Math.abs((double)status[1] - expectedUsedSpace)
/ expectedUsedSpace;
if (totalSpaceVariance < CAPACITY_ALLOWED_VARIANCE
&& usedSpaceVariance < CAPACITY_ALLOWED_VARIANCE)
break; //done
if (Time.monotonicNow() > failtime) {
throw new TimeoutException("Cluster failed to reached expected values of "
+ "totalSpace (current: " + status[0]
+ ", expected: " + expectedTotalSpace
+ "), or usedSpace (current: " + status[1]
+ ", expected: " + expectedUsedSpace
+ "), in more than " + timeout + " msec.");
}
try {
Thread.sleep(100L);
} catch(InterruptedException ignored) {
}
}
}