Package org.apache.hadoop.dfs

Examples of org.apache.hadoop.dfs.MiniDFSCluster.restartDataNode()

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      TestDatanodeBlockScanner.corruptReplica(block.getBlockName(), 0);
      File scanLog = new File(System.getProperty("test.build.data"),
          "dfs/data/data1/current/dncp_block_verification.log.curr");
      assertTrue(scanLog.delete());
      // restart the datanode so the corrupt replica will be detected
      cluster.restartDataNode(0);
      DFSTestUtil.waitReplication(fs, fileName, (short)2);
     
      final DatanodeID corruptDataNode =
        cluster.getDataNodes().get(2).dnRegistration;
      final FSNamesystem namesystem = FSNamesystem.getFSNamesystem();
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      }
      // the block will be replicated
      DFSTestUtil.waitReplication(fs, FILE_PATH, REPLICATION_FACTOR);

      // restart the first datanode
      cluster.restartDataNode(dnprop);
      cluster.waitActive();
     
      // check if excessive replica is detected
      NumberReplicas num = null;
      do {
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      do {
        num = namesystem.countNodes(block);
      } while (num.liveReplicas() != REPLICATION_FACTOR);
     
      // restart the first datanode
      cluster.restartDataNode(dnprop);
      cluster.waitActive();
     
      // check if excessive replica is detected
      do {
       num = namesystem.countNodes(block);
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