本文整理汇总了Java中org.apache.hadoop.hdfs.protocol.DatanodeInfo.setDecommissioned方法的典型用法代码示例。如果您正苦于以下问题：Java DatanodeInfo.setDecommissioned方法的具体用法？Java DatanodeInfo.setDecommissioned怎么用？Java DatanodeInfo.setDecommissioned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.setDecommissioned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: testWhenSomeNodesAreNotGood
import org.apache.hadoop.hdfs.protocol.DatanodeInfo; //导入方法依赖的package包/类
@Test(timeout=180000)
public void testWhenSomeNodesAreNotGood() throws Exception {
// 4 favored nodes
final InetSocketAddress addrs[] = new InetSocketAddress[4];
final String[] hosts = new String[addrs.length];
for (int i = 0; i < addrs.length; i++) {
addrs[i] = datanodes.get(i).getXferAddress();
hosts[i] = addrs[i].getAddress().getHostAddress() + ":" + addrs[i].getPort();
}
//make some datanode not "good" so that even if the client prefers it,
//the namenode would not give it as a replica to write to
DatanodeInfo d = cluster.getNameNode().getNamesystem().getBlockManager()
.getDatanodeManager().getDatanodeByXferAddr(
addrs[0].getAddress().getHostAddress(), addrs[0].getPort());
//set the decommission status to true so that
//BlockPlacementPolicyDefault.isGoodTarget returns false for this dn
d.setDecommissioned();
Path p = new Path("/filename-foo-bar-baz");
final short replication = (short)3;
FSDataOutputStream out = dfs.create(p, FsPermission.getDefault(), true,
4096, replication, 4096L, null, addrs);
out.write(SOME_BYTES);
out.close();
//reset the state
d.stopDecommission();
BlockLocation[] locations = getBlockLocations(p);
Assert.assertEquals(replication, locations[0].getNames().length);;
//also make sure that the datanode[0] is not in the list of hosts
for (int i = 0; i < replication; i++) {
final String loc = locations[0].getNames()[i];
int j = 0;
for(; j < hosts.length && !loc.equals(hosts[j]); j++);
Assert.assertTrue("j=" + j, j > 0);
Assert.assertTrue("loc=" + loc + " not in host list "
+ Arrays.asList(hosts) + ", j=" + j, j < hosts.length);
}
}