Examples of org.apache.hadoop.hbase.master.LoadBalancer$RegionPlanComparator

org.apache.hadoop.hbase.master.LoadBalancer
Makes decisions about the placement and movement of Regions across RegionServers.
Cluster-wide load balancing will occur only when there are no regions in transition and according to a fixed period of a time using {@link #balanceCluster(Map)}.
Inline region placement with {@link #immediateAssignment} can be used whenthe Master needs to handle closed regions that it currently does not have a destination set for. This can happen during master failover.
On cluster startup, bulk assignment can be used to determine locations for all Regions in a cluster.
This classes produces plans for the {@link AssignmentManager} to execute.

    final HMaster master = Mockito.mock(HMaster.class);
    final Server server = Mockito.mock(Server.class);
    final ServerManager serverManager = Mockito.mock(ServerManager.class);
    final ServerName SERVERNAME_A = new ServerName("mockserver_a.org", 1000, 8000);
    final ServerName SERVERNAME_B = new ServerName("mockserver_b.org", 1001, 8000);
    LoadBalancer balancer = LoadBalancerFactory.getLoadBalancer(conf);
    CatalogTracker catalogTracker = Mockito.mock(CatalogTracker.class);
    final HRegionInfo REGIONINFO = new HRegionInfo(TableName.valueOf("table_test"),
        HConstants.EMPTY_START_ROW, HConstants.EMPTY_START_ROW);


    ZooKeeperWatcher zkWatcher = new ZooKeeperWatcher(TEST_UTIL.getConfiguration(),

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  }


  @Test
  public void testAssignmentManagerDoesntUseDrainedServerWithBulkAssign() throws Exception {
    Configuration conf = TEST_UTIL.getConfiguration();
    LoadBalancer balancer = LoadBalancerFactory.getLoadBalancer(conf);
    CatalogTracker catalogTracker = Mockito.mock(CatalogTracker.class);
    AssignmentManager am;
    final HMaster master = Mockito.mock(HMaster.class);
    final Server server = Mockito.mock(Server.class);
    final ServerManager serverManager = Mockito.mock(ServerManager.class);

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    final HMaster master = Mockito.mock(HMaster.class);
    final Server server = Mockito.mock(Server.class);
    final ServerManager serverManager = Mockito.mock(ServerManager.class);
    final ServerName SERVERNAME_A = ServerName.valueOf("mockserver_a.org", 1000, 8000);
    final ServerName SERVERNAME_B = ServerName.valueOf("mockserver_b.org", 1001, 8000);
    LoadBalancer balancer = LoadBalancerFactory.getLoadBalancer(conf);
    final HRegionInfo REGIONINFO = new HRegionInfo(TableName.valueOf("table_test"),
        HConstants.EMPTY_START_ROW, HConstants.EMPTY_START_ROW);


    ZooKeeperWatcher zkWatcher = new ZooKeeperWatcher(TEST_UTIL.getConfiguration(),
      "zkWatcher-Test", abortable, true);

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  }


  @Test
  public void testAssignmentManagerDoesntUseDrainedServerWithBulkAssign() throws Exception {
    Configuration conf = TEST_UTIL.getConfiguration();
    LoadBalancer balancer = LoadBalancerFactory.getLoadBalancer(conf);
    AssignmentManager am;
    final HMaster master = Mockito.mock(HMaster.class);
    final Server server = Mockito.mock(Server.class);
    final ServerManager serverManager = Mockito.mock(ServerManager.class);
    final ServerName SERVERNAME_A = ServerName.valueOf("mockserverbulk_a.org", 1000, 8000);

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    final HMaster master = Mockito.mock(HMaster.class);
    final Server server = Mockito.mock(Server.class);
    final ServerManager serverManager = Mockito.mock(ServerManager.class);
    final ServerName SERVERNAME_A = ServerName.valueOf("mockserver_a.org", 1000, 8000);
    final ServerName SERVERNAME_B = ServerName.valueOf("mockserver_b.org", 1001, 8000);
    LoadBalancer balancer = LoadBalancerFactory.getLoadBalancer(conf);
    CatalogTracker catalogTracker = Mockito.mock(CatalogTracker.class);
    final HRegionInfo REGIONINFO = new HRegionInfo(TableName.valueOf("table_test"),
        HConstants.EMPTY_START_ROW, HConstants.EMPTY_START_ROW);


    ZooKeeperWatcher zkWatcher = new ZooKeeperWatcher(TEST_UTIL.getConfiguration(),

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  }


  @Test
  public void testAssignmentManagerDoesntUseDrainedServerWithBulkAssign() throws Exception {
    Configuration conf = TEST_UTIL.getConfiguration();
    LoadBalancer balancer = LoadBalancerFactory.getLoadBalancer(conf);
    CatalogTracker catalogTracker = Mockito.mock(CatalogTracker.class);
    AssignmentManager am;
    final HMaster master = Mockito.mock(HMaster.class);
    final Server server = Mockito.mock(Server.class);
    final ServerManager serverManager = Mockito.mock(ServerManager.class);

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    IndexLoadBalancer balancer = null;


    @Override
    public void preMasterInitialization(ObserverContext<MasterCoprocessorEnvironment> ctx)
            throws IOException {
        LoadBalancer loadBalancer =
                ctx.getEnvironment().getMasterServices().getAssignmentManager().getBalancer();
        if (loadBalancer instanceof IndexLoadBalancer) {
            balancer = (IndexLoadBalancer) loadBalancer;
        }
        super.preMasterInitialization(ctx);

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    final HMaster master = Mockito.mock(HMaster.class);
    final Server server = Mockito.mock(Server.class);
    final ServerManager serverManager = Mockito.mock(ServerManager.class);
    final ServerName SERVERNAME_A = ServerName.valueOf("mockserver_a.org", 1000, 8000);
    final ServerName SERVERNAME_B = ServerName.valueOf("mockserver_b.org", 1001, 8000);
    LoadBalancer balancer = LoadBalancerFactory.getLoadBalancer(conf);
    CatalogTracker catalogTracker = Mockito.mock(CatalogTracker.class);
    final HRegionInfo REGIONINFO = new HRegionInfo(TableName.valueOf("table_test"),
        HConstants.EMPTY_START_ROW, HConstants.EMPTY_START_ROW);


    ZooKeeperWatcher zkWatcher = new ZooKeeperWatcher(TEST_UTIL.getConfiguration(),

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  }


  @Test
  public void testAssignmentManagerDoesntUseDrainedServerWithBulkAssign() throws Exception {
    Configuration conf = TEST_UTIL.getConfiguration();
    LoadBalancer balancer = LoadBalancerFactory.getLoadBalancer(conf);
    CatalogTracker catalogTracker = Mockito.mock(CatalogTracker.class);
    AssignmentManager am;
    final HMaster master = Mockito.mock(HMaster.class);
    final Server server = Mockito.mock(Server.class);
    final ServerManager serverManager = Mockito.mock(ServerManager.class);

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