本文整理汇总了Java中org.apache.hadoop.hdfs.protocol.datatransfer.PipelineAck.ECN属性的典型用法代码示例。如果您正苦于以下问题：Java PipelineAck.ECN属性的具体用法？Java PipelineAck.ECN怎么用？Java PipelineAck.ECN使用的例子？那么恭喜您, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类org.apache.hadoop.hdfs.protocol.datatransfer.PipelineAck的用法示例。
在下文中一共展示了PipelineAck.ECN属性的3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: getECN
/**
* The ECN bit for the DataNode. The DataNode should return:
* <ul>
* <li>ECN.DISABLED when ECN is disabled.</li>
* <li>ECN.SUPPORTED when ECN is enabled but the DN still has capacity.</li>
* <li>ECN.CONGESTED when ECN is enabled and the DN is congested.</li>
* </ul>
*/
public PipelineAck.ECN getECN() {
if (!pipelineSupportECN) {
return PipelineAck.ECN.DISABLED;
}
double load = ManagementFactory.getOperatingSystemMXBean()
.getSystemLoadAverage();
return load > NUM_CORES * CONGESTION_RATIO ? PipelineAck.ECN.CONGESTED :
PipelineAck.ECN.SUPPORTED;
}
示例2: testECNFlag
@Test
public void testECNFlag() throws IOException {
Configuration conf = new Configuration();
conf.setBoolean(DFSConfigKeys.DFS_PIPELINE_ECN_ENABLED, true);
MiniDFSCluster cluster = null;
try {
cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1).build();
PipelineAck.ECN ecn = cluster.getDataNodes().get(0).getECN();
Assert.assertNotEquals(PipelineAck.ECN.DISABLED, ecn);
} finally {
if (cluster != null) {
cluster.shutdown();
}
}
}
示例3: getECN
/**
* The ECN bit for the DataNode. The DataNode should return:
* <ul>
* <li>ECN.DISABLED when ECN is disabled.</li>
* <li>ECN.SUPPORTED when ECN is enabled but the DN still has capacity.</li>
* <li>ECN.CONGESTED when ECN is enabled and the DN is congested.</li>
* </ul>
*/
public PipelineAck.ECN getECN() {
return pipelineSupportECN ? PipelineAck.ECN.SUPPORTED : PipelineAck.ECN
.DISABLED;
}