Package org.apache.hadoop.hdfs

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

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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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      }
      // 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.blockManager.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.blockManager.countNodes(block);
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          Thread.sleep(1000);
        } catch (InterruptedException ignored) {}
      }
     
      // restart the datanode so the corrupt replica will be detected
      cluster.restartDataNode(dnProps);
      DFSTestUtil.waitReplication(fs, fileName, (short)2);
     
      final DatanodeID corruptDataNode =
        cluster.getDataNodes().get(2).dnRegistration;
      final FSNamesystem namesystem = cluster.getNamesystem();
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        LOG.info("=========================== restarting cluster");
        DataNodeProperties otherNode = cluster.stopDataNode(0);
        cluster.restartNameNode();
       
        // Restart the datanode with the corrupt replica first.
        cluster.restartDataNode(oldGenstampNode);
        cluster.waitActive();

        // Then the other node
        cluster.restartDataNode(otherNode);
        cluster.waitActive();
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        // Restart the datanode with the corrupt replica first.
        cluster.restartDataNode(oldGenstampNode);
        cluster.waitActive();

        // Then the other node
        cluster.restartDataNode(otherNode);
        cluster.waitActive();
       
        // Compute and send invalidations, waiting until they're fully processed.
        cluster.getNameNode().getNamesystem().getBlockManager()
          .computeInvalidateWork(2);
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          Thread.sleep(1000);
        } catch (InterruptedException ignored) {}
      }
     
      // restart the datanode so the corrupt replica will be detected
      cluster.restartDataNode(dnProps);
      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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