本文整理汇总了Java中org.apache.hadoop.hdfs.server.datanode.DataNode.getFSDataset方法的典型用法代码示例。如果您正苦于以下问题：Java DataNode.getFSDataset方法的具体用法？Java DataNode.getFSDataset怎么用？Java DataNode.getFSDataset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.server.datanode.DataNode的用法示例。
在下文中一共展示了DataNode.getFSDataset方法的4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: stopLazyWriter
import org.apache.hadoop.hdfs.server.datanode.DataNode; //导入方法依赖的package包/类
/**
* Stop the lazy writer daemon that saves RAM disk files to persistent storage.
* @param dn
*/
public static void stopLazyWriter(DataNode dn) {
FsDatasetImpl fsDataset = ((FsDatasetImpl) dn.getFSDataset());
((FsDatasetImpl.LazyWriter) fsDataset.lazyWriter.getRunnable()).stop();
}
示例2: triggerEviction
import org.apache.hadoop.hdfs.server.datanode.DataNode; //导入方法依赖的package包/类
protected void triggerEviction(DataNode dn) {
FsDatasetImpl fsDataset = (FsDatasetImpl) dn.getFSDataset();
fsDataset.evictLazyPersistBlocks(Long.MAX_VALUE); // Run one eviction cycle.
}
示例3: FsDatasetImplTestUtils
import org.apache.hadoop.hdfs.server.datanode.DataNode; //导入方法依赖的package包/类
public FsDatasetImplTestUtils(DataNode datanode) {
Preconditions.checkArgument(
datanode.getFSDataset() instanceof FsDatasetImpl);
dataset = (FsDatasetImpl) datanode.getFSDataset();
}
示例4: testReplicaMapAfterDatanodeRestart
import org.apache.hadoop.hdfs.server.datanode.DataNode; //导入方法依赖的package包/类
/**
* This is a test to check the replica map before and after the datanode
* quick restart (less than 5 minutes)
* @throws Exception
*/
@Test
public void testReplicaMapAfterDatanodeRestart() throws Exception {
Configuration conf = new HdfsConfiguration();
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleFederatedTopology(2))
.build();
try {
cluster.waitActive();
NameNode nn1 = cluster.getNameNode(0);
NameNode nn2 = cluster.getNameNode(1);
assertNotNull("cannot create nn1", nn1);
assertNotNull("cannot create nn2", nn2);
// check number of volumes in fsdataset
DataNode dn = cluster.getDataNodes().get(0);
FsDatasetImpl dataSet = (FsDatasetImpl)DataNodeTestUtils.
getFSDataset(dn);
List<FsVolumeSpi> volumes = null;
try (FsDatasetSpi.FsVolumeReferences referredVols = dataSet.getFsVolumeReferences()) {
// number of volumes should be 2 - [data1, data2]
assertEquals("number of volumes is wrong", 2, referredVols.size());
volumes = new ArrayList<>(referredVols.size());
for (FsVolumeSpi vol : referredVols) {
volumes.add(vol);
}
}
ArrayList<String> bpList = new ArrayList<>(Arrays.asList(
cluster.getNamesystem(0).getBlockPoolId(),
cluster.getNamesystem(1).getBlockPoolId()));
Assert.assertTrue("Cluster should have 2 block pools",
bpList.size() == 2);
createReplicas(bpList, volumes, cluster.getFsDatasetTestUtils(dn));
ReplicaMap oldReplicaMap = new ReplicaMap(this);
oldReplicaMap.addAll(dataSet.volumeMap);
cluster.restartDataNode(0);
cluster.waitActive();
dn = cluster.getDataNodes().get(0);
dataSet = (FsDatasetImpl) dn.getFSDataset();
testEqualityOfReplicaMap(oldReplicaMap, dataSet.volumeMap, bpList);
} finally {
cluster.shutdown();
}
}