List of wouldLowerAvailability() Examples

Examples of wouldLowerAvailability()

org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.wouldLowerAvailability()

Examples of org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.wouldLowerAvailability()

    // the servers are in the order in which it is inserted in the clusterState
    // map (linkedhashmap is important). A similar thing applies to the region lists
    Cluster cluster = new Cluster(master, clusterState, null, null, null, null, rackManager);
    // check whether a move of region1 from servers[0] to servers[1] would lower
    // the availability of region1
    assertTrue(cluster.wouldLowerAvailability(hri1, servers[1]));
    // check whether a move of region1 from servers[0] to servers[2] would lower
    // the availability of region1
    assertTrue(!cluster.wouldLowerAvailability(hri1, servers[2]));
    // check whether a move of replica_of_region1 from servers[0] to servers[2] would lower
    // the availability of replica_of_region1

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Examples of org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.wouldLowerAvailability()

    // check whether a move of region1 from servers[0] to servers[1] would lower
    // the availability of region1
    assertTrue(cluster.wouldLowerAvailability(hri1, servers[1]));
    // check whether a move of region1 from servers[0] to servers[2] would lower
    // the availability of region1
    assertTrue(!cluster.wouldLowerAvailability(hri1, servers[2]));
    // check whether a move of replica_of_region1 from servers[0] to servers[2] would lower
    // the availability of replica_of_region1
    assertTrue(!cluster.wouldLowerAvailability(hri2, servers[2]));
    // check whether a move of region2 from servers[0] to servers[1] would lower
    // the availability of region2

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Examples of org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.wouldLowerAvailability()

    // check whether a move of region1 from servers[0] to servers[2] would lower
    // the availability of region1
    assertTrue(!cluster.wouldLowerAvailability(hri1, servers[2]));
    // check whether a move of replica_of_region1 from servers[0] to servers[2] would lower
    // the availability of replica_of_region1
    assertTrue(!cluster.wouldLowerAvailability(hri2, servers[2]));
    // check whether a move of region2 from servers[0] to servers[1] would lower
    // the availability of region2
    assertTrue(!cluster.wouldLowerAvailability(hri3, servers[1]));


    // now lets have servers[1] host replica_of_region2

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Examples of org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.wouldLowerAvailability()

    // check whether a move of replica_of_region1 from servers[0] to servers[2] would lower
    // the availability of replica_of_region1
    assertTrue(!cluster.wouldLowerAvailability(hri2, servers[2]));
    // check whether a move of region2 from servers[0] to servers[1] would lower
    // the availability of region2
    assertTrue(!cluster.wouldLowerAvailability(hri3, servers[1]));


    // now lets have servers[1] host replica_of_region2
    list1.add(RegionReplicaUtil.getRegionInfoForReplica(hri3, 1));
    // create a new clusterState with the above change
    cluster = new Cluster(master, clusterState, null, null, null, null, rackManager);

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Examples of org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.wouldLowerAvailability()

    list1.add(RegionReplicaUtil.getRegionInfoForReplica(hri3, 1));
    // create a new clusterState with the above change
    cluster = new Cluster(master, clusterState, null, null, null, null, rackManager);
    // now check whether a move of a replica from servers[0] to servers[1] would lower
    // the availability of region2
    assertTrue(cluster.wouldLowerAvailability(hri3, servers[1]));


    // start over again
    clusterState.clear();
    clusterState.put(servers[0], list0); //servers[0], rack1 hosts region1
    clusterState.put(servers[5], list1); //servers[5], rack2 hosts replica_of_region1 and replica_of_region2

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Examples of org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.wouldLowerAvailability()

    // create a cluster with the above clusterState
    cluster = new Cluster(master, clusterState, null, null, null, null, rackManager);
    // check whether a move of region1 from servers[0],rack1 to servers[6],rack2 would
    // lower the availability


    assertTrue(cluster.wouldLowerAvailability(hri1, servers[0]));


    // now create a cluster without the rack manager
    cluster = new Cluster(master, clusterState, null, null, null, null, null);
    // now repeat check whether a move of region1 from servers[0] to servers[6] would
    // lower the availability

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Examples of org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.wouldLowerAvailability()


    // now create a cluster without the rack manager
    cluster = new Cluster(master, clusterState, null, null, null, null, null);
    // now repeat check whether a move of region1 from servers[0] to servers[6] would
    // lower the availability
    assertTrue(!cluster.wouldLowerAvailability(hri1, servers[6]));
  }


  @Test
  public void testRegionAvailabilityWithRegionMoves() throws Exception {
    List<HRegionInfo> list0 = new ArrayList<HRegionInfo>();

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Examples of org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.wouldLowerAvailability()

    // cluster is created (constructor code) would make sure the indices of
    // the servers are in the order in which it is inserted in the clusterState
    // map (linkedhashmap is important).
    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

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Examples of org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.wouldLowerAvailability()


    // 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);

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Examples of org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer.Cluster.wouldLowerAvailability()

    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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