本文整理汇总了Java中org.apache.hadoop.hdfs.server.namenode.NameNodeAdapter.getLeaseRenewalTime方法的典型用法代码示例。如果您正苦于以下问题：Java NameNodeAdapter.getLeaseRenewalTime方法的具体用法？Java NameNodeAdapter.getLeaseRenewalTime怎么用？Java NameNodeAdapter.getLeaseRenewalTime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.namenode.NameNodeAdapter的用法示例。
在下文中一共展示了NameNodeAdapter.getLeaseRenewalTime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: testLeasesRenewedOnTransition
import org.apache.hadoop.hdfs.server.namenode.NameNodeAdapter; //导入方法依赖的package包/类
/**
* Test for HDFS-2812. Since lease renewals go from the client
* only to the active NN, the SBN will have out-of-date lease
* info when it becomes active. We need to make sure we don't
* accidentally mark the leases as expired when the failover
* proceeds.
*/
@Test(timeout=120000)
public void testLeasesRenewedOnTransition() throws Exception {
Configuration conf = new Configuration();
conf.setInt(DFSConfigKeys.DFS_HA_TAILEDITS_PERIOD_KEY, 1);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
.nnTopology(MiniDFSNNTopology.simpleHATopology())
.numDataNodes(1)
.build();
FSDataOutputStream stm = null;
FileSystem fs = HATestUtil.configureFailoverFs(cluster, conf);
NameNode nn0 = cluster.getNameNode(0);
NameNode nn1 = cluster.getNameNode(1);
try {
cluster.waitActive();
cluster.transitionToActive(0);
LOG.info("Starting with NN 0 active");
stm = fs.create(TEST_FILE_PATH);
long nn0t0 = NameNodeAdapter.getLeaseRenewalTime(nn0, TEST_FILE_STR);
assertTrue(nn0t0 > 0);
long nn1t0 = NameNodeAdapter.getLeaseRenewalTime(nn1, TEST_FILE_STR);
assertEquals("Lease should not yet exist on nn1",
-1, nn1t0);
Thread.sleep(5); // make sure time advances!
HATestUtil.waitForStandbyToCatchUp(nn0, nn1);
long nn1t1 = NameNodeAdapter.getLeaseRenewalTime(nn1, TEST_FILE_STR);
assertTrue("Lease should have been created on standby. Time was: " +
nn1t1, nn1t1 > nn0t0);
Thread.sleep(5); // make sure time advances!
LOG.info("Failing over to NN 1");
cluster.transitionToStandby(0);
cluster.transitionToActive(1);
long nn1t2 = NameNodeAdapter.getLeaseRenewalTime(nn1, TEST_FILE_STR);
assertTrue("Lease should have been renewed by failover process",
nn1t2 > nn1t1);
} finally {
IOUtils.closeStream(stm);
cluster.shutdown();
}
}