Examples of org.apache.hadoop.hbase.catalog.CatalogTracker

org.apache.hadoop.hbase.catalog.CatalogTracker
Tracks the availability of the catalog tables -ROOT- and .META.. This class is "read-only" in that the locations of the catalog tables cannot be explicitly set. Instead, ZooKeeper is used to learn of the availability and location of -ROOT-. -ROOT- is used to learn of the location of .META. If not available in -ROOT-, ZooKeeper is used to monitor for a new location of .META..
Call {@link #start()} to start up operation. Call {@link #stop()}} to interrupt waits and close up shop.

   * @throws IOException
   */
  public SnapshotOfRegionAssignmentFromMeta getRegionAssignmentSnapshot()
  throws IOException {
    SnapshotOfRegionAssignmentFromMeta currentAssignmentShapshot =
      new SnapshotOfRegionAssignmentFromMeta(new CatalogTracker(this.conf));
    currentAssignmentShapshot.initialize();
    return currentAssignmentShapshot;
  }

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    final String name = "testGetRegion";
    LOG.info("Started " + name);
    final byte [] nameBytes = Bytes.toBytes(name);
    HTable t = TEST_UTIL.createTable(nameBytes, HConstants.CATALOG_FAMILY);
    TEST_UTIL.createMultiRegions(t, HConstants.CATALOG_FAMILY);
    CatalogTracker ct = new CatalogTracker(TEST_UTIL.getConfiguration());
    ct.start();
    try {
      HRegionLocation regionLocation = t.getRegionLocation("mmm");
      HRegionInfo region = regionLocation.getRegionInfo();
      byte[] regionName = region.getRegionName();
      Pair<HRegionInfo, ServerName> pair = admin.getRegion(regionName, ct);
      assertTrue(Bytes.equals(regionName, pair.getFirst().getRegionName()));
      pair = admin.getRegion(region.getEncodedNameAsBytes(), ct);
      assertTrue(Bytes.equals(regionName, pair.getFirst().getRegionName()));
    } finally {
      ct.stop();
    }
  }

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    this.clusterStatusTracker = new ClusterStatusTracker(this.zooKeeper, this);
    this.clusterStatusTracker.start();
    blockAndCheckIfStopped(this.clusterStatusTracker);


    // Create the catalog tracker and start it;
    this.catalogTracker = new CatalogTracker(this.zooKeeper, this.conf, this);
    catalogTracker.start();


    // Retrieve clusterId
    // Since cluster status is now up
    // ID should have already been set by HMaster

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    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(),
      "zkWatcher-Test", abortable, true);

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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);
    final ServerName SERVERNAME_A = new ServerName("mockserverbulk_a.org", 1000, 8000);

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   * @throws IOException
   */
  CatalogTracker createCatalogTracker(final ZooKeeperWatcher zk,
      final Configuration conf, Abortable abortable)
  throws IOException {
    return new CatalogTracker(zk, conf, abortable);
  }

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    LOG.info("Starting testConcurrentMetaScannerAndCatalogJanitor");
    final TableName TABLENAME =
        TableName.valueOf("testConcurrentMetaScannerAndCatalogJanitor");
    final byte[] FAMILY = Bytes.toBytes("family");
    TEST_UTIL.createTable(TABLENAME, FAMILY);
    final CatalogTracker catalogTracker = mock(CatalogTracker.class);
    when(catalogTracker.getConnection()).thenReturn(TEST_UTIL.getHBaseAdmin().getConnection());


    class RegionMetaSplitter extends StoppableImplementation implements Runnable {
      Random random = new Random();
      Throwable ex = null;
      @Override

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   * The passed in list gets changed in this method
   */
  @Override
  protected void handleTableOperation(List<HRegionInfo> hris) throws IOException {
    MasterFileSystem fileSystemManager = masterServices.getMasterFileSystem();
    CatalogTracker catalogTracker = masterServices.getCatalogTracker();
    FileSystem fs = fileSystemManager.getFileSystem();
    Path rootDir = fileSystemManager.getRootDir();
    byte[] tableName = hTableDescriptor.getName();
    Path tableDir = HTableDescriptor.getTableDir(rootDir, tableName);

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  /**
   * Initialize the restore helper, based on the snapshot and table information provided.
   */
  private RestoreSnapshotHelper getRestoreHelper(final Path rootDir, final Path snapshotDir,
      final String sourceTableName, final HTableDescriptor htdClone) throws IOException {
    CatalogTracker catalogTracker = Mockito.mock(CatalogTracker.class);
    HTableDescriptor tableDescriptor = Mockito.mock(HTableDescriptor.class);
    ForeignExceptionDispatcher monitor = Mockito.mock(ForeignExceptionDispatcher.class);
    MonitoredTask status = Mockito.mock(MonitoredTask.class);


    SnapshotDescription sd = SnapshotDescription.newBuilder()

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    this.assertExpectedTable(tableName, ROWCOUNT, 2);


    dir = buildBulkFiles(tableName, 3);


    // Mess it up by leaving a hole in the hbase:meta
    CatalogTracker ct = new CatalogTracker(util.getConfiguration());
    List<HRegionInfo> regionInfos = MetaReader.getTableRegions(ct, Bytes.toBytes(tableName));
    for (HRegionInfo regionInfo : regionInfos) {
      if (Bytes.equals(regionInfo.getStartKey(), HConstants.EMPTY_BYTE_ARRAY)) {
        MetaEditor.deleteRegion(ct, regionInfo);
        break;

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