Package org.apache.hadoop.hdfs

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

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        // and one current copy. This test wants to ensure that the old genstamp
        // copy is the one that is deleted.

        LOG.info("=========================== restarting cluster");
        DataNodeProperties otherNode = cluster.stopDataNode(0);
        cluster.restartNameNode();
       
        // Restart the datanode with the corrupt replica first.
        cluster.restartDataNode(oldGenstampNode);
        cluster.waitActive();
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      } catch (IOException ioe) {
        // This is expected.
      }
      Mockito.reset(faultInjector);
      // Namenode should still restart successfully
      cluster.restartNameNode();
    } finally {
      if (fs != null) {
        fs.close();
      }
      cleanup(secondary);
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      // setting up invalid cluster
      StartupOption.FORMAT.setClusterId("cluster-2");
      DFSTestUtil.formatNameNode(nn1);
      MiniDFSCluster.copyNameDirs(FSNamesystem.getNamespaceDirs(nn1),
          FSNamesystem.getNamespaceDirs(nn2), nn2);
      cluster.restartNameNode(0, false);
      cluster.restartNameNode(1, false);
      cluster.restartDataNode(dnProp);
     
      // let the initialization be complete
      Thread.sleep(10000);
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      StartupOption.FORMAT.setClusterId("cluster-2");
      DFSTestUtil.formatNameNode(nn1);
      MiniDFSCluster.copyNameDirs(FSNamesystem.getNamespaceDirs(nn1),
          FSNamesystem.getNamespaceDirs(nn2), nn2);
      cluster.restartNameNode(0, false);
      cluster.restartNameNode(1, false);
      cluster.restartDataNode(dnProp);
     
      // let the initialization be complete
      Thread.sleep(10000);
      dn = cluster.getDataNodes().get(0);
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    try {
      cluster = new MiniDFSCluster.Builder(conf)
      .numDataNodes(numDatanodes).setupHostsFile(true).build();
      cluster.waitActive();
 
      cluster.restartNameNode();
      NamenodeProtocols nn = cluster.getNameNodeRpc();
      assertNotNull(nn);
      Assert.assertTrue(cluster.isDataNodeUp());
     
      DatanodeInfo[] info = nn.getDatanodeReport(DatanodeReportType.LIVE);
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      cluster.getNameNode(0).getRpcServer().mkdirs("/test",
          FsPermission.createImmutable((short)0755), true);

      // Restarting the standby should not finalize any edits files
      // in the shared directory when it starts up!
      cluster.restartNameNode(1);
     
      assertEditFiles(cluster.getNameDirs(0),
          NNStorage.getInProgressEditsFileName(1));
      assertEditFiles(
          Collections.singletonList(cluster.getSharedEditsDir(0, 1)),
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      cluster.getNameNode(0).getRpcServer().mkdirs("/test2",
          FsPermission.createImmutable((short)0755), true);

      // If we restart NN0, it'll come back as standby, and we can
      // transition NN1 to active and make sure it reads edits correctly at this point.
      cluster.restartNameNode(0);
      cluster.getNameNode(1).getRpcServer().transitionToActive();

      // NN1 should have both the edits that came before its restart, and the edits that
      // came after its restart.
      assertNotNull(NameNodeAdapter.getFileInfo(cluster.getNameNode(1), "/test", true));
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      LOG.info("Namenode has bad files. " + badFiles.size());
      assertTrue("Namenode has " + badFiles.size() + " bad files. Expecting 1.",
          badFiles.size() == 1);
      // restart namenode
      cluster.restartNameNode(0);
      fs = cluster.getFileSystem();

      // wait until replication queues have been initialized
      while (!cluster.getNameNode().namesystem.isPopulatingReplQueues()) {
        try {
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    try {
      cluster = new MiniDFSCluster.Builder(config)
      .numDataNodes(numDatanodes).setupHostsFile(true).build();
      cluster.waitActive();
 
      cluster.restartNameNode();
      NamenodeProtocols nn = cluster.getNameNodeRpc();
      assertNotNull(nn);
      assertTrue(cluster.isDataNodeUp());
     
      DatanodeInfo[] info = nn.getDatanodeReport(DatanodeReportType.LIVE);
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       * previous test, this test should also run while namenode is down. The
       * setup for this test depends on the previous test.
       */

      // restart the namenode and then shut it down for test
      cluster.restartNameNode(0);
      cluster.shutdownNameNode(0);

      // verify blockSeekTo() still works (forced to use cached tokens)
      in1.seek(0);
      assertTrue(checkFile1(in1));
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