Package org.apache.hadoop.hdfs

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

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      // Do the upgrade. Shut down NN1 and then restart NN0 with the upgrade
      // flag.
      cluster.shutdownNameNode(1);
      cluster.getNameNodeInfos()[0].setStartOpt(StartupOption.UPGRADE);
      cluster.restartNameNode(0, false);
     
      checkNnPreviousDirExistence(cluster, 0, true);
      checkNnPreviousDirExistence(cluster, 1, false);
      checkPreviousDirExistence(sharedDir, true);
     
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      // so no need to transition it to active.
      assertTrue(fs.mkdirs(new Path("/foo2")));
     
      // Restart NN0 without the -upgrade flag, to make sure that works.
      cluster.getNameNodeInfos()[0].setStartOpt(StartupOption.REGULAR);
      cluster.restartNameNode(0, false);
     
      // Make sure we can still do FS ops after upgrading.
      cluster.transitionToActive(0);
      assertTrue(fs.mkdirs(new Path("/foo3")));
     
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      assertTrue(fs.mkdirs(new Path("/foo3")));
     
      // Make sure that starting the second NN with the -upgrade flag fails.
      cluster.getNameNodeInfos()[1].setStartOpt(StartupOption.UPGRADE);
      try {
        cluster.restartNameNode(1, false);
        fail("Should not have been able to start second NN with -upgrade");
      } catch (IOException ioe) {
        GenericTestUtils.assertExceptionContains(
            "It looks like the shared log is already being upgraded", ioe);
      }
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      // Do the upgrade. Shut down NN1 and then restart NN0 with the upgrade
      // flag.
      cluster.shutdownNameNode(1);
      cluster.getNameNodeInfos()[0].setStartOpt(StartupOption.UPGRADE);
      cluster.restartNameNode(0, false);
     
      checkNnPreviousDirExistence(cluster, 0, true);
      checkNnPreviousDirExistence(cluster, 1, false);
      checkPreviousDirExistence(sharedDir, true);
     
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      // so no need to transition it to active.
      assertTrue(fs.mkdirs(new Path("/foo2")));
     
      // Restart NN0 without the -upgrade flag, to make sure that works.
      cluster.getNameNodeInfos()[0].setStartOpt(StartupOption.REGULAR);
      cluster.restartNameNode(0, false);
     
      // Make sure we can still do FS ops after upgrading.
      cluster.transitionToActive(0);
      assertTrue(fs.mkdirs(new Path("/foo3")));
     
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          new String[]{"-force"},
          cluster.getConfiguration(1));
      assertEquals(0, rc);
     
      // Now restart NN1 and make sure that we can do ops against that as well.
      cluster.restartNameNode(1);
      cluster.transitionToStandby(0);
      cluster.transitionToActive(1);
      assertTrue(fs.mkdirs(new Path("/foo4")));
     
      assertCTimesEqual(cluster);
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      // Do the upgrade. Shut down NN1 and then restart NN0 with the upgrade
      // flag.
      cluster.shutdownNameNode(1);
      cluster.getNameNodeInfos()[0].setStartOpt(StartupOption.UPGRADE);
      cluster.restartNameNode(0, false);
     
      checkNnPreviousDirExistence(cluster, 0, true);
      checkNnPreviousDirExistence(cluster, 1, false);
      checkPreviousDirExistence(sharedDir, true);
     
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      // so no need to transition it to active.
      assertTrue(fs.mkdirs(new Path("/foo2")));
     
      // Restart NN0 without the -upgrade flag, to make sure that works.
      cluster.getNameNodeInfos()[0].setStartOpt(StartupOption.REGULAR);
      cluster.restartNameNode(0, false);
     
      // Make sure we can still do FS ops after upgrading.
      cluster.transitionToActive(0);
      assertTrue(fs.mkdirs(new Path("/foo3")));
     
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          new String[]{"-force"},
          cluster.getConfiguration(1));
      assertEquals(0, rc);
     
      // Now restart NN1 and make sure that we can do ops against that as well.
      cluster.restartNameNode(1);
      cluster.transitionToStandby(0);
      cluster.transitionToActive(1);
      assertTrue(fs.mkdirs(new Path("/foo4")));
     
      assertCTimesEqual(cluster);
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      // Do the upgrade. Shut down NN1 and then restart NN0 with the upgrade
      // flag.
      cluster.shutdownNameNode(1);
      cluster.getNameNodeInfos()[0].setStartOpt(StartupOption.UPGRADE);
      cluster.restartNameNode(0, false);
     
      checkNnPreviousDirExistence(cluster, 0, true);
      checkNnPreviousDirExistence(cluster, 1, false);
      checkJnPreviousDirExistence(qjCluster, true);
     
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