Package org.apache.hadoop.hdfs

Examples of org.apache.hadoop.hdfs.MiniDFSCluster.transitionToStandby()

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          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 {
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      String renewer = UserGroupInformation.getLoginUser().getUserName();
      Token<DelegationTokenIdentifier> token = nn1.getRpcServer()
          .getDelegationToken(new Text(renewer));

      LOG.info("Failing over to NN 1");
      cluster.transitionToStandby(0);
      cluster.transitionToActive(1);

      nn2.getRpcServer().renewDelegationToken(token);
      nn2.getRpcServer().cancelDelegationToken(token);
      token = nn2.getRpcServer().getDelegationToken(new Text(renewer));
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      assertEquals(2, namenodes.size());
     
      assertFalse(HAUtil.isAtLeastOneActive(namenodes));
      cluster.transitionToActive(0);
      assertTrue(HAUtil.isAtLeastOneActive(namenodes));
      cluster.transitionToStandby(0);
      assertFalse(HAUtil.isAtLeastOneActive(namenodes));
      cluster.transitionToActive(1);
      assertTrue(HAUtil.isAtLeastOneActive(namenodes));
      cluster.transitionToStandby(1);
      assertFalse(HAUtil.isAtLeastOneActive(namenodes));
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      assertTrue(HAUtil.isAtLeastOneActive(namenodes));
      cluster.transitionToStandby(0);
      assertFalse(HAUtil.isAtLeastOneActive(namenodes));
      cluster.transitionToActive(1);
      assertTrue(HAUtil.isAtLeastOneActive(namenodes));
      cluster.transitionToStandby(1);
      assertFalse(HAUtil.isAtLeastOneActive(namenodes));
    } finally {
      if (cluster != null) {
        cluster.shutdown();
      }
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