Package org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster

Examples of org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.MoveRegionAction

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      case ASSIGN_REGION:
        AssignRegionAction ar = (AssignRegionAction) action;
        regionMoved(ar.region, -1, ar.server);
        break;
      case MOVE_REGION:
        MoveRegionAction mra = (MoveRegionAction) action;
        regionMoved(mra.region, mra.fromServer, mra.toServer);
        break;
      case SWAP_REGIONS:
        SwapRegionsAction a = (SwapRegionsAction) action;
        regionMoved(a.fromRegion, a.fromServer, a.toServer);
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    Cluster cluster = new Cluster(master, clusterState, null, null, null, null, rackManager);
    // check whether moving region1 from servers[1] to servers[2] would lower availability
    assertTrue(!cluster.wouldLowerAvailability(hri1, servers[2]));

    // now move region1 from servers[0] to servers[2]
    cluster.doAction(new MoveRegionAction(0, 0, 2));
    // now repeat check whether moving region1 from servers[1] to servers[2]
    // would lower availability
    assertTrue(cluster.wouldLowerAvailability(hri1, servers[2]));

    // start over again
    clusterState.clear();
    List<HRegionInfo> list3 = new ArrayList<HRegionInfo>();
    HRegionInfo hri4 = RegionReplicaUtil.getRegionInfoForReplica(hri3, 1);
    list3.add(hri4);
    clusterState.put(servers[0], list0); //servers[0], rack1 hosts region1
    clusterState.put(servers[5], list1); //servers[5], rack2 hosts replica_of_region1
    clusterState.put(servers[6], list2); //servers[6], rack2 hosts region2
    clusterState.put(servers[12], list3); //servers[12], rack3 hosts replica_of_region2
    // create a cluster with the above clusterState
    cluster = new Cluster(master, clusterState, null, null, null, null, rackManager);
    // check whether a move of replica_of_region2 from servers[12],rack3 to servers[0],rack1 would
    // lower the availability
    assertTrue(!cluster.wouldLowerAvailability(hri4, servers[0]));
    // now move region2 from servers[6],rack2 to servers[0],rack1
    cluster.doAction(new MoveRegionAction(2, 2, 0));
    // now repeat check if replica_of_region2 from servers[12],rack3 to servers[0],rack1 would
    // lower the availability
    assertTrue(cluster.wouldLowerAvailability(hri3, servers[0]));
  }
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      case ASSIGN_REGION:
        AssignRegionAction ar = (AssignRegionAction) action;
        regionMoved(ar.region, -1, ar.server);
        break;
      case MOVE_REGION:
        MoveRegionAction mra = (MoveRegionAction) action;
        regionMoved(mra.region, mra.fromServer, mra.toServer);
        break;
      case SWAP_REGIONS:
        SwapRegionsAction a = (SwapRegionsAction) action;
        regionMoved(a.fromRegion, a.fromServer, a.toServer);
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    Cluster cluster = new Cluster(clusterState, null, null, rackManager);
    // check whether moving region1 from servers[1] to servers[2] would lower availability
    assertTrue(!cluster.wouldLowerAvailability(hri1, servers[2]));

    // now move region1 from servers[0] to servers[2]
    cluster.doAction(new MoveRegionAction(0, 0, 2));
    // now repeat check whether moving region1 from servers[1] to servers[2]
    // would lower availability
    assertTrue(cluster.wouldLowerAvailability(hri1, servers[2]));

    // start over again
    clusterState.clear();
    List<HRegionInfo> list3 = new ArrayList<HRegionInfo>();
    HRegionInfo hri4 = RegionReplicaUtil.getRegionInfoForReplica(hri3, 1);
    list3.add(hri4);
    clusterState.put(servers[0], list0); //servers[0], rack1 hosts region1
    clusterState.put(servers[5], list1); //servers[5], rack2 hosts replica_of_region1
    clusterState.put(servers[6], list2); //servers[6], rack2 hosts region2
    clusterState.put(servers[12], list3); //servers[12], rack3 hosts replica_of_region2
    // create a cluster with the above clusterState
    cluster = new Cluster(clusterState, null, null, rackManager);
    // check whether a move of replica_of_region2 from servers[12],rack3 to servers[0],rack1 would
    // lower the availability
    assertTrue(!cluster.wouldLowerAvailability(hri4, servers[0]));
    // now move region2 from servers[6],rack2 to servers[0],rack1
    cluster.doAction(new MoveRegionAction(2, 2, 0));
    // now repeat check if replica_of_region2 from servers[12],rack3 to servers[0],rack1 would
    // lower the availability
    assertTrue(cluster.wouldLowerAvailability(hri3, servers[0]));
  }
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Related Classes of org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.MoveRegionAction

  • org.apache.hadoop.hbase.master.balancer.StochasticLoadBalancer$CostFunction
  • org.apache.hadoop.hbase.master.balancer.TestBaseLoadBalancer
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