Package org.apache.helix.controller.stages

Examples of org.apache.helix.controller.stages.ClusterDataCache

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            new ZKHelixDataAccessor(_clusterName, new ZkBaseDataAccessor<ZNRecord>(_client));
        Builder keyBuilder = accessor.keyBuilder();
        int numberOfPartitions =
            accessor.getProperty(keyBuilder.idealStates(_resourceName)).getRecord().getListFields()
                .size();
        ClusterDataCache cache = new ClusterDataCache();
        cache.refresh(accessor);
        String masterValue =
            cache.getStateModelDef(cache.getIdealState(_resourceName).getStateModelDefRef())
                .getStatesPriorityList().get(0);
        int replicas = Integer.parseInt(cache.getIdealState(_resourceName).getReplicas());
        String instanceGroupTag = cache.getIdealState(_resourceName).getInstanceGroupTag();
        int instances = 0;
        for (String liveInstanceName : cache.getLiveInstances().keySet()) {
          if (cache.getInstanceConfigMap().get(liveInstanceName).containsTag(instanceGroupTag)) {
            instances++;
          }
        }
        if (instances == 0) {
          instances = cache.getLiveInstances().size();
        }
        return verifyBalanceExternalView(
            accessor.getProperty(keyBuilder.externalView(_resourceName)).getRecord(),
            numberOfPartitions, masterValue, replicas, instances);
      } catch (Exception e) {
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   * Instantiate a cluster accessor
   * @param clusterId the cluster to access
   * @param accessor HelixDataAccessor for the physical store
   */
  public ClusterAccessor(ClusterId clusterId, HelixDataAccessor accessor) {
    this(clusterId, accessor, new ClusterDataCache());
  }
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      return null;
    }

    // get the cluster data cache (unfortunately involves a second read of the cluster)
    HelixDataAccessor accessor = _helixManager.getHelixDataAccessor();
    ClusterDataCache cache = new ClusterDataCache();
    cache.refresh(accessor);

    // adapt ResourceCurrentState to CurrentStateOutput
    CurrentStateOutput currentStateOutput = new CurrentStateOutput();
    for (ResourceId resource : currentState.getResourceIds()) {
      currentStateOutput.setBucketSize(resource.stringify(), currentState.getBucketSize(resource));
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  public GenericHelixController(PipelineRegistry registry) {
    _paused = false;
    _registry = registry;
    _lastSeenInstances = new AtomicReference<Map<String, LiveInstance>>();
    _lastSeenSessions = new AtomicReference<Map<String, LiveInstance>>();
    _cache = new ClusterDataCache();
    _eventQueue = new ClusterEventBlockingQueue();
    _eventThread = new ClusterEventProcessor();
    _eventThread.setDaemon(true);
    _eventThread.start();
  }
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          + resourceId);
      return null;
    }

    // get the cluster data cache (unfortunately involves a second read of the cluster)
    ClusterDataCache cache = new ClusterDataCache();
    cache.refresh(accessor);

    // adapt ResourceCurrentState to CurrentStateOutput
    CurrentStateOutput currentStateOutput = new CurrentStateOutput();
    for (ResourceId resource : currentState.getResourceIds()) {
      currentStateOutput.setBucketSize(resource.stringify(), currentState.getBucketSize(resource));
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      }
    }

    private Map<String, Map<String, String>> getMapping(final Map<String, List<String>> listResult) {
      final Map<String, Map<String, String>> mapResult = new HashMap<String, Map<String, String>>();
      ClusterDataCache cache = new ClusterDataCache();
      MockAccessor accessor = new MockAccessor();
      Builder keyBuilder = accessor.keyBuilder();
      for (String node : _liveNodes) {
        LiveInstance liveInstance = new LiveInstance(node);
        liveInstance.setSessionId("testSession");
        accessor.setProperty(keyBuilder.liveInstance(node), liveInstance);
      }
      cache.refresh(accessor);
      for (String partition : _partitions) {
        List<String> preferenceList = listResult.get(partition);
        Map<String, String> currentStateMap = _currentMapping.get(partition);
        Set<String> disabled = Collections.emptySet();
        Map<String, String> assignment =
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            accessor.getProperty(keyBuilder.idealStates(_resourceName)).getRecord().getListFields()
                .size();
      } catch (Exception e) {
        return false;
      }
      ClusterDataCache cache = new ClusterDataCache();
      cache.refresh(accessor);

      IdealState idealState = cache.getIdealState(_resourceName);
      if (idealState == null) {
        return false;
      }
      String masterValue =
          cache.getStateModelDef(idealState.getStateModelDefRef()).getStatesPriorityList().get(0);
      int replicas = Integer.parseInt(cache.getIdealState(_resourceName).getReplicas());
      String instanceGroupTag = cache.getIdealState(_resourceName).getInstanceGroupTag();
      int instances = 0;
      for (String liveInstanceName : cache.getLiveInstances().keySet()) {
        if (cache.getInstanceConfigMap().get(liveInstanceName).containsTag(instanceGroupTag)) {
          instances++;
        }
      }
      if (instances == 0) {
        instances = cache.getLiveInstances().size();
      }
      ExternalView ev = accessor.getProperty(keyBuilder.externalView(_resourceName));
      if (ev == null) {
        return false;
      }
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          new ZKHelixDataAccessor(_clusterName, new ZkBaseDataAccessor<ZNRecord>(_gZkClient));
      Builder keyBuilder = accessor.keyBuilder();
      int numberOfPartitions =
          accessor.getProperty(keyBuilder.idealStates(_resourceName)).getRecord().getListFields()
              .size();
      ClusterDataCache cache = new ClusterDataCache();
      cache.refresh(accessor);
      String masterValue =
          cache.getStateModelDef(cache.getIdealState(_resourceName).getStateModelDefRef())
              .getStatesPriorityList().get(0);
      int replicas = Integer.parseInt(cache.getIdealState(_resourceName).getReplicas());
      return verifyBalanceExternalView(accessor.getProperty(keyBuilder.externalView(_resourceName))
          .getRecord(), numberOfPartitions, masterValue, replicas, cache.getLiveInstances().size(),
          cache.getIdealState(_resourceName).getMaxPartitionsPerInstance());
    }
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  static boolean verifyBestPossAndExtView(HelixDataAccessor accessor,
      Map<String, Map<String, String>> errStates, String clusterName, Set<String> resources) {
    try {
      Builder keyBuilder = accessor.keyBuilder();
      // read cluster once and do verification
      ClusterDataCache cache = new ClusterDataCache();
      cache.refresh(accessor);

      Map<String, IdealState> idealStates = cache.getIdealStates();
      if (idealStates == null) // || idealStates.isEmpty())
      {
        // ideal state is null because ideal state is dropped
        idealStates = Collections.emptyMap();
      }
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            new ZKHelixDataAccessor(_clusterName, new ZkBaseDataAccessor<ZNRecord>(_client));
        Builder keyBuilder = accessor.keyBuilder();
        int numberOfPartitions =
            accessor.getProperty(keyBuilder.idealStates(_resourceName)).getRecord().getListFields()
                .size();
        ClusterDataCache cache = new ClusterDataCache();
        cache.refresh(accessor);
        String masterValue =
            cache.getStateModelDef(cache.getIdealState(_resourceName).getStateModelDefRef())
                .getStatesPriorityList().get(0);
        int replicas = Integer.parseInt(cache.getIdealState(_resourceName).getReplicas());
        String instanceGroupTag = cache.getIdealState(_resourceName).getInstanceGroupTag();
        int instances = 0;
        for (String liveInstanceName : cache.getLiveInstances().keySet()) {
          if (cache.getInstanceConfigMap().get(liveInstanceName).containsTag(instanceGroupTag)) {
            instances++;
          }
        }
        if (instances == 0) {
          instances = cache.getLiveInstances().size();
        }
        return verifyBalanceExternalView(
            accessor.getProperty(keyBuilder.externalView(_resourceName)).getRecord(),
            numberOfPartitions, masterValue, replicas, instances);
      } catch (Exception e) {
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Related Classes of org.apache.helix.controller.stages.ClusterDataCache

  • org.apache.helix.api.accessor.ClusterAccessor
  • org.apache.helix.controller.GenericHelixController
  • org.apache.helix.controller.rebalancer.FallbackRebalancer
  • org.apache.helix.controller.strategy.TestAutoRebalanceStrategy$AutoRebalanceTester
  • org.apache.helix.HelixProperty
  • org.apache.helix.integration.TestAutoRebalance$ExternalViewBalancedVerifier
  • org.apache.helix.integration.TestAutoRebalancePartitionLimit$ExternalViewBalancedVerifier
  • org.apache.helix.integration.TestCustomizedIdealStateRebalancer$ExternalViewBalancedVerifier
  • org.apache.helix.model.InstanceConfig
  • org.apache.helix.model.LiveInstance
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