Package org.apache.hadoop.hbase.master

Examples of org.apache.hadoop.hbase.master.RegionStates

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   */
  private List<HRegionInfo> regionsToAssignWithServerName(
      final List<Pair<HRegionInfo, ServerName>> regionsInMeta) throws IOException {
    ServerManager serverManager = ((HMaster) this.server).getServerManager();
    List<HRegionInfo> regions = new ArrayList<HRegionInfo>();
    RegionStates regionStates = this.assignmentManager.getRegionStates();
    for (Pair<HRegionInfo, ServerName> regionLocation : regionsInMeta) {
      HRegionInfo hri = regionLocation.getFirst();
      ServerName sn = regionLocation.getSecond();
      if (!regionStates.isRegionInTransition(hri) && !regionStates.isRegionAssigned(hri)) {
        if (this.retainAssignment && sn != null && serverManager.isServerOnline(sn)) {
          this.assignmentManager.addPlan(hri.getEncodedName(), new RegionPlan(hri, null, sn));
        }
        regions.add(hri);
      } else {
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    // Randomly choose one of the two merged regions
    HRegionInfo hri = RandomUtils.nextBoolean() ?
      mergedRegions.getFirst() : mergedRegions.getSecond();
    MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
    AssignmentManager am = cluster.getMaster().getAssignmentManager();
    RegionStates regionStates = am.getRegionStates();
    long start = EnvironmentEdgeManager.currentTimeMillis();
    while (!regionStates.isRegionInState(hri, State.MERGED)) {
      assertFalse("Timed out in waiting one merged region to be in state MERGED",
        EnvironmentEdgeManager.currentTimeMillis() - start > 60000);
      Thread.sleep(500);
    }

    // We should not be able to assign it again
    am.assign(hri, true, true);
    assertFalse("Merged region should not be in transition again",
      regionStates.isRegionInTransition(hri)
        && regionStates.isRegionInState(hri, State.MERGED));

    table.close();
  }
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    final TableName tableName = TableName.valueOf("testMerge");

    try {
      // Create table and load data.
      HTable table = createTableAndLoadData(master, tableName);
      RegionStates regionStates = master.getAssignmentManager().getRegionStates();
      List<HRegionInfo> regions = regionStates.getRegionsOfTable(tableName);
      // Fake offline one region
      HRegionInfo a = regions.get(0);
      HRegionInfo b = regions.get(1);
      regionStates.regionOffline(a);
      try {
        // Merge offline region. Region a is offline here
        admin.mergeRegions(a.getEncodedNameAsBytes(), b.getEncodedNameAsBytes(), false);
        fail("Offline regions should not be able to merge");
      } catch (IOException ie) {
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      for (int i=0; !firstSplitCompleted && i<100; i++) {
        Thread.sleep(100);
      }
      assertTrue("fist split did not complete", firstSplitCompleted);

      RegionStates regionStates = cluster.getMaster().getAssignmentManager().getRegionStates();
      Map<String, RegionState> rit = regionStates.getRegionsInTransition();

      for (int i=0; rit.containsKey(hri.getTableName()) && i<100; i++) {
        Thread.sleep(100);
      }
      assertFalse("region still in transition", rit.containsKey(
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      List<HRegion> daughters = cluster.getRegions(tableName);
      assertTrue(daughters.size() == regions.size() + 1);

      HRegionInfo hri = region.getRegionInfo(); // split parent
      AssignmentManager am = cluster.getMaster().getAssignmentManager();
      RegionStates regionStates = am.getRegionStates();
      long start = EnvironmentEdgeManager.currentTimeMillis();
      while (!regionStates.isRegionInState(hri, State.SPLIT)) {
        assertFalse("Timed out in waiting split parent to be in state SPLIT",
          EnvironmentEdgeManager.currentTimeMillis() - start > 60000);
        Thread.sleep(500);
      }

      // We should not be able to assign it again
      am.assign(hri, true, true);
      assertFalse("Split region should not be in transition again",
        regionStates.isRegionInTransition(hri)
          && regionStates.isRegionInState(hri, State.SPLIT));
    } finally {
      admin.setBalancerRunning(true, false);
      cluster.getMaster().setCatalogJanitorEnabled(true);
    }
  }
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   */
  public Waiter.Predicate<Exception> predicateNoRegionsInTransition() {
    return new Waiter.Predicate<Exception>() {
      @Override
      public boolean evaluate() throws Exception {
        final RegionStates regionStates = getMiniHBaseCluster().getMaster()
            .getAssignmentManager().getRegionStates();
        return !regionStates.isRegionsInTransition();
      }
    };
  }
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   */
  public Waiter.Predicate<Exception> predicateNoRegionsInTransition() {
    return new Waiter.Predicate<Exception>() {
      @Override
      public boolean evaluate() throws Exception {
        final RegionStates regionStates = getMiniHBaseCluster().getMaster()
            .getAssignmentManager().getRegionStates();
        return !regionStates.isRegionsInTransition();
      }
    };
  }
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   */
  private List<HRegionInfo> regionsToAssignWithServerName(
      final List<Pair<HRegionInfo, ServerName>> regionsInMeta) throws IOException {
    ServerManager serverManager = ((HMaster) this.server).getServerManager();
    List<HRegionInfo> regions = new ArrayList<HRegionInfo>();
    RegionStates regionStates = this.assignmentManager.getRegionStates();
    for (Pair<HRegionInfo, ServerName> regionLocation : regionsInMeta) {
      HRegionInfo hri = regionLocation.getFirst();
      ServerName sn = regionLocation.getSecond();
      if (!regionStates.isRegionInTransition(hri) && !regionStates.isRegionAssigned(hri)) {
        if (this.retainAssignment && sn != null && serverManager.isServerOnline(sn)) {
          this.assignmentManager.addPlan(hri.getEncodedName(), new RegionPlan(hri, null, sn));
        }
        regions.add(hri);
      } else {
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      this.regions = regions;
    }

    @Override
    protected void populatePool(ExecutorService pool) {
      RegionStates regionStates = assignmentManager.getRegionStates();
      for (HRegionInfo region: regions) {
        if (regionStates.isRegionInTransition(region)
            && !regionStates.isRegionFailedToClose(region)) continue;
        final HRegionInfo hri = region;
        pool.execute(Trace.wrap(new Runnable() {
          public void run() {
            assignmentManager.unassign(hri, true);
          }
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      List<HRegionInfo> toAssignRegions = new ArrayList<HRegionInfo>();
      toAssignRegions.addAll(regionsInTransition);

      // Iterate regions that were on this server and assign them
      if (hris != null) {
        RegionStates regionStates = am.getRegionStates();
        for (Map.Entry<HRegionInfo, Result> e: hris.entrySet()) {
          HRegionInfo hri = e.getKey();
          if (regionsInTransition.contains(hri)) {
            continue;
          }
          RegionState rit = regionStates.getRegionTransitionState(hri);
          if (processDeadRegion(hri, e.getValue(), am, server.getCatalogTracker())) {
            ServerName addressFromAM = regionStates.getRegionServerOfRegion(hri);
            if (addressFromAM != null && !addressFromAM.equals(this.serverName)) {
              // If this region is in transition on the dead server, it must be
              // opening or pending_open, which should have been covered by AM#processServerShutdown
              LOG.info("Skip assigning region " + hri.getRegionNameAsString()
                + " because it has been opened in " + addressFromAM.getServerName());
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Related Classes of org.apache.hadoop.hbase.master.RegionStates

  • org.apache.hadoop.conf.Configuration
  • org.apache.hadoop.hbase.client.TestScannersFromClientSide
  • org.apache.hadoop.hbase.HBaseTestingUtility
  • org.apache.hadoop.hbase.HRegionInfo
  • org.apache.hadoop.hbase.master.handler.DeleteTableHandler
  • org.apache.hadoop.hbase.master.handler.DisableTableHandler$BulkDisabler
  • org.apache.hadoop.hbase.master.handler.DispatchMergingRegionHandler
  • org.apache.hadoop.hbase.master.handler.EnableTableHandler
  • org.apache.hadoop.hbase.master.handler.ServerShutdownHandler
  • org.apache.hadoop.hbase.master.handler.TestCreateTableHandler
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