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

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

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    long randomSessionID = opts.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();
    store.setLocations(assignments);
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         */
        if (tablet.getNumEntriesInMemory() > 0 && !tablet.minorCompactNow(MinorCompactionReason.SYSTEM)) {
          throw new RuntimeException("Minor compaction after recovery fails for " + extent);
        }

        Assignment assignment = new Assignment(extent, getTabletSession());
        TabletStateStore.setLocation(assignment);
       
        synchronized (openingTablets) {
          synchronized (onlineTablets) {
            openingTablets.remove(extent);
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                  // maybe it's a finishing migration
                  TServerInstance dest = migrations.get(tls.extent);
                  if (dest != null) {
                    // if destination is still good, assign it
                    if (destinations.keySet().contains(dest)) {
                      assignments.add(new Assignment(tls.extent, dest));
                    } else {
                      // get rid of this migration
                      migrations.remove(tls.extent);
                      unassigned.put(tls.extent, server);
                    }
                  } else {
                    unassigned.put(tls.extent, server);
                  }
                  break;
                case ASSIGNED:
                  // Send another reminder
                  assigned.add(new Assignment(tls.extent, tls.future));
                  break;
              }
            } else {
              switch (state) {
                case UNASSIGNED:
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        tabletBalancer.getAssignments(Collections.unmodifiableSortedMap(currentTServers), Collections.unmodifiableMap(unassigned), assignedOut);
        for (Entry<KeyExtent,TServerInstance> assignment : assignedOut.entrySet()) {
          if (unassigned.containsKey(assignment.getKey())) {
            if (assignment.getValue() != null) {
              log.debug(store.name() + " assigning tablet " + assignment);
              assignments.add(new Assignment(assignment.getKey(), assignment.getValue()));
            }
          } else {
            log.warn(store.name() + " load balancer assigning tablet that was not nominated for assignment " + assignment.getKey());
          }
        }
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    // finish the split
    KeyExtent tablet = new KeyExtent(tableId, new Text("p"), new Text("o"));
    m = tablet.getPrevRowUpdateMutation();
    Constants.METADATA_SPLIT_RATIO_COLUMN.put(m, new Value("0.5".getBytes()));
    update(connector, m);
    metaDataStateStore.setLocations(Collections.singletonList(new Assignment(tablet, state.someTServer)));
   
    // onos... there's a new tablet online
    stats = scan(state, metaDataStateStore);
    Assert.assertEquals(MergeState.WAITING_FOR_CHOPPED, stats.nextMergeState(connector, state));
   
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         */
        if (tablet.getNumEntriesInMemory() > 0 && !tablet.minorCompactNow(MinorCompactionReason.RECOVERY)) {
          throw new RuntimeException("Minor compaction after recovery fails for " + extent);
        }

        Assignment assignment = new Assignment(extent, getTabletSession());
        TabletStateStore.setLocation(assignment);

        synchronized (openingTablets) {
          synchronized (onlineTablets) {
            openingTablets.remove(extent);
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        highDatafileSizes, highDatafilesToRemove);
   
    MetadataTableUtil.splitTablet(high, extent.getPrevEndRow(), splitRatio, SystemCredentials.get(), zl);
    TServerInstance instance = new TServerInstance(location, zl.getSessionId());
    Writer writer = new Writer(HdfsZooInstance.getInstance(), SystemCredentials.get(), MetadataTable.ID);
    Assignment assignment = new Assignment(high, instance);
    Mutation m = new Mutation(assignment.tablet.getMetadataEntry());
    m.put(TabletsSection.FutureLocationColumnFamily.NAME, assignment.server.asColumnQualifier(), assignment.server.asMutationValue());
    writer.update(m);
   
    if (steps >= 1) {
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                // maybe it's a finishing migration
                TServerInstance dest = this.master.migrations.get(tls.extent);
                if (dest != null) {
                  // if destination is still good, assign it
                  if (destinations.keySet().contains(dest)) {
                    assignments.add(new Assignment(tls.extent, dest));
                  } else {
                    // get rid of this migration
                    this.master.migrations.remove(tls.extent);
                    unassigned.put(tls.extent, server);
                  }
                } else {
                  unassigned.put(tls.extent, server);
                }
                break;
              case ASSIGNED:
                // Send another reminder
                assigned.add(new Assignment(tls.extent, tls.future));
                break;
            }
          } else {
            switch (state) {
              case UNASSIGNED:
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            if (!currentTServers.containsKey(assignment.getValue())) {
              Master.log.warn("balancer assigned " + assignment.getKey() + " to a tablet server that is not current " + assignment.getValue() + " ignoring");
              continue;
            }
            Master.log.debug(store.name() + " assigning tablet " + assignment);
            assignments.add(new Assignment(assignment.getKey(), assignment.getValue()));
          }
        } else {
          Master.log.warn(store.name() + " load balancer assigning tablet that was not nominated for assignment " + assignment.getKey());
        }
      }
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    // finish the split
    KeyExtent tablet = new KeyExtent(tableId, new Text("p"), new Text("o"));
    m = tablet.getPrevRowUpdateMutation();
    TabletsSection.TabletColumnFamily.SPLIT_RATIO_COLUMN.put(m, new Value("0.5".getBytes()));
    update(connector, m);
    metaDataStateStore.setLocations(Collections.singletonList(new Assignment(tablet, state.someTServer)));

    // onos... there's a new tablet online
    stats = scan(state, metaDataStateStore);
    Assert.assertEquals(MergeState.WAITING_FOR_CHOPPED, stats.nextMergeState(connector, state));
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Related Classes of org.apache.accumulo.server.master.state.Assignment

  • org.apache.accumulo.master.state.RootTabletStateStoreTest
  • org.apache.accumulo.master.TabletGroupWatcher
  • org.apache.accumulo.master.TestMergeState
  • org.apache.accumulo.server.master.Master$TabletGroupWatcher
  • org.apache.accumulo.server.master.state.RootTabletStateStoreTest
  • org.apache.accumulo.server.master.TestMergeState
  • org.apache.accumulo.server.tabletserver.TabletServer$AssignmentHandler
  • org.apache.accumulo.server.test.functional.SplitRecoveryTest
  • org.apache.accumulo.server.test.performance.thrift.NullTserver
  • org.apache.accumulo.test.functional.SplitRecoveryIT
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