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

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

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

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 If the current tablet server has a different session, we know the location information is out-of-date.

    MetaDataTableScanner s = new MetaDataTableScanner(zki, SecurityConstants.getSystemCredentials(), 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));
    }
    s.close();
    // point them to this server
    MetaDataStateStore store = new MetaDataStateStore();

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      recentlyUnloadedCache.put(extent, System.currentTimeMillis());
      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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          ZooTabletStateStore store = new ZooTabletStateStore();
          if (!store.iterator().hasNext()) {
            log.warn("Illegal state: location is not set in zookeeper");
            return null;
          }
          TabletLocationState next = store.iterator().next();
          if (!instance.equals(next.future)) {
            log.warn("Future location is not to this server for the root tablet");
            return null;
          }
          TreeMap<KeyExtent,Text> set = new TreeMap<KeyExtent,Text>();

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      assertNull(location.future);
      assertEquals(location.current, server);
      count++;
    }
    assertEquals(count, 1);
    TabletLocationState assigned = new TabletLocationState(root, server, null, null, null, false);
    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, false);
    try {
      tstore.unassign(Collections.singletonList(broken));
      Assert.fail("should not get here");
    } catch (IllegalArgumentException 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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      recentlyUnloadedCache.put(extent, System.currentTimeMillis());
      onlineTablets.remove(extent);
      
      try {
        TServerInstance instance = new TServerInstance(clientAddress, getLock().getSessionId());
        TabletLocationState tls = null;
        try {
          tls = new TabletLocationState(extent, null, instance, null, null, false);
        } catch (BadLocationStateException e) {
          log.error("Unexpected error ", e);
        }
        log.debug("Unassigning " + tls);
        TabletStateStore.unassign(tls);

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  private static Pair<Text,KeyExtent> verifyRootTablet(KeyExtent extent, TServerInstance instance) throws DistributedStoreException, AccumuloException {
    ZooTabletStateStore store = new ZooTabletStateStore();
    if (!store.iterator().hasNext()) {
      throw new AccumuloException("Illegal state: location is not set in zookeeper");
    }
    TabletLocationState next = store.iterator().next();
    if (!instance.equals(next.future)) {
      throw new AccumuloException("Future location is not to this server for the root tablet");
    }
    
    if (next.current != null) {

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      if (states.size() != 2 && allAssigned == true)
        break;
    } 
    assertEquals(1, states.size());
    // pick an assigned tablet and assign it to the old tablet
    TabletLocationState moved = null;
    for (TabletLocationState old : oldLocations) {
      if (!states.contains(old.current)) {
        moved = old;
      }
    }

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    MetaDataTableScanner.configureScanner(scanner, master);
    scanner.setRange(tableRange);
    
    KeyExtent prevExtent = null;
    for (Entry<Key,Value> entry : scanner) {
      TabletLocationState locationState = MetaDataTableScanner.createTabletLocationState(entry.getKey(), entry.getValue());
      if (!locationState.extent.isPreviousExtent(prevExtent)) {
        log.info("Still waiting for table to be deleted: " + tableId + " saw inconsistency " + prevExtent + " " + locationState.extent);
        done = false;
        break;
      }
      prevExtent = locationState.extent;
      
      TabletState state = locationState.getState(master.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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      assertNull(location.future);
      assertEquals(location.current, server);
      count++;
    }
    assertEquals(count, 1);
    TabletLocationState assigned = null;
    try {
      assigned = new TabletLocationState(root, server, null, null, null, false);
    } catch (BadLocationStateException e) {
      fail("Unexpected error " + e);
    }
    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 = null;
    try {
      broken = new TabletLocationState(notRoot, server, null, null, null, false);
    } catch (BadLocationStateException e) {
      fail("Unexpected error " + e);
    }
    try {
      tstore.unassign(Collections.singletonList(broken));

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