Examples of org.apache.accumulo.server.master.state.TabletLocationState

Package org.apache.accumulo.server.master.state

Examples of org.apache.accumulo.server.master.state.TabletLocationState

org.apache.accumulo.server.master.state.TabletLocationState
When a tablet is assigned, we mark its future location. When the tablet is opened, we set its current location. A tablet should never have both a future and current location. A tablet server is always associated with a unique session id. If the current tablet server has a different session, we know the location information is out-of-date.

      // exceptions
      onlineTablets.remove(extent);
      
      try {
        TServerInstance instance = new TServerInstance(clientAddress, getLock().getSessionId());
        TabletLocationState tls = new TabletLocationState(extent, null, instance, null, null, false);
        log.debug("Unassigning " + tls);
        TabletStateStore.unassign(tls);
      } catch (DistributedStoreException ex) {
        log.warn("Unable to update storage", ex);
      } catch (KeeperException e) {

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    MetaDataTableScanner s = new MetaDataTableScanner(tableRange);
    long randomSessionID = port;
    TServerInstance instance = new TServerInstance(addr, randomSessionID);
    List<Assignment> assignments = new ArrayList<Assignment>();
    while (s.hasNext()) {
      TabletLocationState next = s.next();
      assignments.add(new Assignment(next.extent, instance));
    }
    // point them to this server
    MetaDataStateStore store = new MetaDataStateStore(null);
    store.setLocations(assignments);

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      assertNull(location.future);
      assertEquals(location.current, server);
      count++;
    }
    assertEquals(count, 1);
    TabletLocationState assigned = new TabletLocationState(root, server, null, null, null);
    tstore.unassign(Collections.singletonList(assigned));
    count = 0;
    for (TabletLocationState location : tstore) {
      assertEquals(location.extent, root);
      assertNull(location.future);
      assertNull(location.current);
      count++;
    }
    assertEquals(count, 1);
    
    KeyExtent notRoot = new KeyExtent(new Text("0"), null, null);
    try {
      tstore.setLocations(Collections.singletonList(new Assignment(notRoot, server)));
      Assert.fail("should not get here");
    } catch (IllegalArgumentException ex) {}
    
    try {
      tstore.setFutureLocations(Collections.singletonList(new Assignment(notRoot, server)));
      Assert.fail("should not get here");
    } catch (IllegalArgumentException ex) {}
    
    TabletLocationState broken = new TabletLocationState(notRoot, server, null, null, null);
    try {
      tstore.unassign(Collections.singletonList(broken));
      Assert.fail("should not get here");
    } catch (IllegalArgumentException ex) {}
  }

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      // stop serving tablet - client will get not serving tablet exceptions
      onlineTablets.remove(extent);
      
      try {
        TServerInstance instance = new TServerInstance(clientAddress, getLock().getSessionId());
        TabletLocationState tls = new TabletLocationState(extent, null, instance, null, null);
        log.debug("Unassigning " + tls);
        TabletStateStore.unassign(tls);
      } catch (DistributedStoreException ex) {
        log.warn("Unable to update storage", ex);
      } catch (KeeperException e) {

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      // exceptions
      onlineTablets.remove(extent);
      
      try {
        TServerInstance instance = new TServerInstance(clientAddress, getLock().getSessionId());
        TabletLocationState tls = new TabletLocationState(extent, null, instance, null, null, false);
        log.debug("Unassigning " + tls);
        TabletStateStore.unassign(tls);
      } catch (DistributedStoreException ex) {
        log.warn("Unable to update storage", ex);
      } catch (KeeperException e) {

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        done = true;
        Range tableRange = new KeyExtent(new Text(tableId), null, null).toMetadataRange();
        MetaDataTableScanner metaDataTableScanner = new MetaDataTableScanner(tableRange, null, null);
        try {
          while (metaDataTableScanner.hasNext()) {
            TabletLocationState locationState = metaDataTableScanner.next();
            TabletState state = locationState.getState(onlineTabletServers());
            if (state.equals(TabletState.ASSIGNED) || state.equals(TabletState.HOSTED)) {
              log.debug("Still waiting for table to be deleted: " + tableId + " locationState: " + locationState);
              done = false;
              break;
            }

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    MetaDataTableScanner scanner = new MetaDataTableScanner(new Range(KeyExtent.getMetadataEntry(new Text(tableId), new Text()), KeyExtent.getMetadataEntry(
        new Text(tableId), null)));
    
    TreeSet<String> locs = new TreeSet<String>();
    while (scanner.hasNext()) {
      TabletLocationState state = scanner.next();
      if (state.current != null) {
        try {
          locs.add(state.current.hostPort());
        } catch (Exception ex) {
          log.error(ex, ex);

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    Assert.assertEquals(MergeState.WAITING_FOR_OFFLINE, stats.nextMergeState(connector, state));


    // take it offline
    m = tablet.getPrevRowUpdateMutation();
    Collection<Collection<String>> walogs = Collections.emptyList();
    metaDataStateStore.unassign(Collections.singletonList(new TabletLocationState(tablet, null, state.someTServer, null, walogs, false)));
    
    // now we can split
    stats = scan(state, metaDataStateStore);
    Assert.assertEquals(MergeState.MERGING, stats.nextMergeState(connector, state));

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Related Classes of org.apache.accumulo.server.master.state.TabletLocationState

org.apache.accumulo.master.state.MergeStats

org.apache.accumulo.master.state.RootTabletStateStoreTest

org.apache.accumulo.master.tableOps.CleanUp

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org.apache.accumulo.monitor.servlets.TablesServlet

org.apache.accumulo.server.master.Master$DeleteThread

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