Package org.apache.helix.model

Examples of org.apache.helix.model.Partition

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    Map<String, Map<String, String>> map = new HashMap<String, Map<String, String>>();

    for (String partition : partitions) {
      Map<String, String> curStateMap =
          currentStateOutput.getCurrentStateMap(resourceName, new Partition(partition));
      map.put(partition, new HashMap<String, String>());
      for (String node : curStateMap.keySet()) {
        String state = curStateMap.get(node);
        if (stateCountMap.containsKey(state)) {
          map.get(partition).put(node, state);
        }
      }

      Map<String, String> pendingStateMap =
          currentStateOutput.getPendingStateMap(resourceName, new Partition(partition));
      for (String node : pendingStateMap.keySet()) {
        String state = pendingStateMap.get(node);
        if (stateCountMap.containsKey(state)) {
          map.get(partition).put(node, state);
        }
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    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    MessageSelectionStageOutput msgSelOutput =
        event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    List<Message> messages =
        msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 1, "Should output 1 message: OFFLINE-SLAVE for node0");
    Message message = messages.get(0);
    Assert.assertEquals(message.getFromState(), "OFFLINE");
    Assert.assertEquals(message.getToState(), "SLAVE");
    Assert.assertEquals(message.getTgtName(), "localhost_0");

    // round2: updates node0 currentState to SLAVE but keep the
    // message, make sure controller should not send S->M until removal is done
    setCurrentState(clusterName, "localhost_0", resourceName, resourceName + "_0", "session_1",
        "SLAVE");

    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    msgSelOutput = event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    messages = msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 0, "Should NOT output 1 message: SLAVE-MASTER for node1");

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));

  }
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    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    MessageSelectionStageOutput msgSelOutput =
        event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    List<Message> messages =
        msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 1, "Should output 1 message: OFFLINE-SLAVE for node0");
    Message message = messages.get(0);
    Assert.assertEquals(message.getFromState(), "OFFLINE");
    Assert.assertEquals(message.getToState(), "SLAVE");
    Assert.assertEquals(message.getTgtName(), "localhost_0");

    // round2: drop resource, but keep the
    // message, make sure controller should not send O->DROPPEDN until O->S is done
    HelixAdmin admin = new ZKHelixAdmin(_gZkClient);
    admin.dropResource(clusterName, resourceName);

    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    msgSelOutput = event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    messages = msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 1,
        "Should output only 1 message: OFFLINE->DROPPED for localhost_1");

    message = messages.get(0);
    Assert.assertEquals(message.getFromState(), "SLAVE");
    Assert.assertEquals(message.getToState(), "OFFLINE");
    Assert.assertEquals(message.getTgtName(), "localhost_1");

    // round3: remove O->S for localhost_0, controller should now send O->DROPPED to
    // localhost_0
    Builder keyBuilder = accessor.keyBuilder();
    List<String> msgIds = accessor.getChildNames(keyBuilder.messages("localhost_0"));
    accessor.removeProperty(keyBuilder.message("localhost_0", msgIds.get(0)));
    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    msgSelOutput = event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    messages = msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 1,
        "Should output 1 message: OFFLINE->DROPPED for localhost_0");
    message = messages.get(0);
    Assert.assertEquals(message.getFromState(), "OFFLINE");
    Assert.assertEquals(message.getToState(), "DROPPED");
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    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    MessageSelectionStageOutput msgSelOutput =
        event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    List<Message> messages =
        msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 1, "Should output 1 message: SLAVE-MASTER for node1");
    Message message = messages.get(0);
    Assert.assertEquals(message.getFromState(), "SLAVE");
    Assert.assertEquals(message.getToState(), "MASTER");
    Assert.assertEquals(message.getTgtName(), "localhost_1");

    // round2: updates node0 currentState to SLAVE but keep the
    // message, make sure controller should not send S->M until removal is done
    setupLiveInstances(clusterName, new int[] {
      0
    });
    setCurrentState(clusterName, "localhost_0", resourceName, resourceName + "_0", "session_0",
        "SLAVE");

    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    msgSelOutput = event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    messages = msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 0, "Should NOT output 1 message: SLAVE-MASTER for node0");

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));

  }
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            String instanceName = partErrStates.get(partitionName);

            if (!bestPossStateMap.containsKey(resourceName)) {
              bestPossStateMap.put(resourceName, new HashMap<Partition, Map<String, String>>());
            }
            Partition partition = new Partition(partitionName);
            if (!bestPossStateMap.get(resourceName).containsKey(partition)) {
              bestPossStateMap.get(resourceName).put(partition, new HashMap<String, String>());
            }
            bestPossStateMap.get(resourceName).get(partition)
                .put(instanceName, HelixDefinedState.ERROR.toString());
          }
        }
      }

      // System.out.println("stateMap: " + bestPossStateMap);

      for (String resourceName : idealStates.keySet()) {
        ExternalView extView = extViews.get(resourceName);
        if (extView == null) {
          LOG.info("externalView for " + resourceName + " is not available");
          return false;
        }

        // step 0: remove empty map and DROPPED state from best possible state
        Map<Partition, Map<String, String>> bpStateMap =
            bestPossOutput.getResourceMap(resourceName);
        Iterator<Entry<Partition, Map<String, String>>> iter = bpStateMap.entrySet().iterator();
        while (iter.hasNext()) {
          Map.Entry<Partition, Map<String, String>> entry = iter.next();
          Map<String, String> instanceStateMap = entry.getValue();
          if (instanceStateMap.isEmpty()) {
            iter.remove();
          } else {
            // remove instances with DROPPED state
            Iterator<Map.Entry<String, String>> insIter = instanceStateMap.entrySet().iterator();
            while (insIter.hasNext()) {
              Map.Entry<String, String> insEntry = insIter.next();
              String state = insEntry.getValue();
              if (state.equalsIgnoreCase(HelixDefinedState.DROPPED.toString())) {
                insIter.remove();
              }
            }
          }
        }

        // System.err.println("resource: " + resourceName + ", bpStateMap: " + bpStateMap);

        // step 1: externalView and bestPossibleState has equal size
        int extViewSize = extView.getRecord().getMapFields().size();
        int bestPossStateSize = bestPossOutput.getResourceMap(resourceName).size();
        if (extViewSize != bestPossStateSize) {
          LOG.info("exterView size (" + extViewSize + ") is different from bestPossState size ("
              + bestPossStateSize + ") for resource: " + resourceName);

          // System.err.println("exterView size (" + extViewSize
          // + ") is different from bestPossState size (" + bestPossStateSize
          // + ") for resource: " + resourceName);
          // System.out.println("extView: " + extView.getRecord().getMapFields());
          // System.out.println("bestPossState: " +
          // bestPossOutput.getResourceMap(resourceName));
          return false;
        }

        // step 2: every entry in external view is contained in best possible state
        for (String partition : extView.getRecord().getMapFields().keySet()) {
          Map<String, String> evInstanceStateMap = extView.getRecord().getMapField(partition);
          Map<String, String> bpInstanceStateMap =
              bestPossOutput.getInstanceStateMap(resourceName, new Partition(partition));

          boolean result =
              ClusterStateVerifier.<String, String> compareMap(evInstanceStateMap,
                  bpInstanceStateMap);
          if (result == false) {
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    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    MessageSelectionStageOutput msgSelOutput =
        event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    List<Message> messages =
        msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 1, "Should output 1 message: OFFLINE-SLAVE for node0");
    Message message = messages.get(0);
    Assert.assertEquals(message.getFromState(), "OFFLINE");
    Assert.assertEquals(message.getToState(), "SLAVE");
    Assert.assertEquals(message.getTgtName(), "localhost_0");

    // round2: updates node0 currentState to SLAVE but keep the
    // message, make sure controller should not send S->M until removal is done
    setCurrentState(clusterName, "localhost_0", resourceName, resourceName + "_0", "session_1",
        "SLAVE");

    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    msgSelOutput = event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    messages = msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 0, "Should NOT output 1 message: SLAVE-MASTER for node1");

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));

  }
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    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    MessageSelectionStageOutput msgSelOutput =
        event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    List<Message> messages =
        msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 1, "Should output 1 message: OFFLINE-SLAVE for node0");
    Message message = messages.get(0);
    Assert.assertEquals(message.getFromState(), "OFFLINE");
    Assert.assertEquals(message.getToState(), "SLAVE");
    Assert.assertEquals(message.getTgtName(), "localhost_0");

    // round2: drop resource, but keep the
    // message, make sure controller should not send O->DROPPEDN until O->S is done
    HelixAdmin admin = new ZKHelixAdmin(_gZkClient);
    admin.dropResource(clusterName, resourceName);
    List<IdealState> idealStates = accessor.getChildValues(accessor.keyBuilder().idealStates());
    cache.setIdealStates(idealStates);

    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    msgSelOutput = event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    messages = msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 1,
        "Should output only 1 message: OFFLINE->DROPPED for localhost_1");

    message = messages.get(0);
    Assert.assertEquals(message.getFromState(), "SLAVE");
    Assert.assertEquals(message.getToState(), "OFFLINE");
    Assert.assertEquals(message.getTgtName(), "localhost_1");

    // round3: remove O->S for localhost_0, controller should now send O->DROPPED to
    // localhost_0
    Builder keyBuilder = accessor.keyBuilder();
    List<String> msgIds = accessor.getChildNames(keyBuilder.messages("localhost_0"));
    accessor.removeProperty(keyBuilder.message("localhost_0", msgIds.get(0)));
    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    msgSelOutput = event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    messages = msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 1,
        "Should output 1 message: OFFLINE->DROPPED for localhost_0");
    message = messages.get(0);
    Assert.assertEquals(message.getFromState(), "OFFLINE");
    Assert.assertEquals(message.getToState(), "DROPPED");
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    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    MessageSelectionStageOutput msgSelOutput =
        event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    List<Message> messages =
        msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 1, "Should output 1 message: SLAVE-MASTER for node1");
    Message message = messages.get(0);
    Assert.assertEquals(message.getFromState(), "SLAVE");
    Assert.assertEquals(message.getToState(), "MASTER");
    Assert.assertEquals(message.getTgtName(), "localhost_1");

    // round2: updates node0 currentState to SLAVE but keep the
    // message, make sure controller should not send S->M until removal is done
    setupLiveInstances(clusterName, new int[] {
      0
    });
    setCurrentState(clusterName, "localhost_0", resourceName, resourceName + "_0", "session_0",
        "SLAVE");

    runPipeline(event, dataRefresh);
    runPipeline(event, rebalancePipeline);
    msgSelOutput = event.getAttribute(AttributeName.MESSAGES_SELECTED.toString());
    messages = msgSelOutput.getMessages(resourceName, new Partition(resourceName + "_0"));
    Assert.assertEquals(messages.size(), 0, "Should NOT output 1 message: SLAVE-MASTER for node0");

    System.out.println("END " + clusterName + " at " + new Date(System.currentTimeMillis()));

  }
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    runStage(event, stage2);

    BestPossibleStateOutput output =
        event.getAttribute(AttributeName.BEST_POSSIBLE_STATE.toString());
    for (int p = 0; p < 5; p++) {
      Partition resource = new Partition("testResourceName_" + p);
      AssertJUnit.assertEquals("MASTER", output.getInstanceStateMap("testResourceName", resource)
          .get("localhost_" + (p + 1) % 5));
    }
    System.out.println("END TestBestPossibleStateCalcStage at "
        + new Date(System.currentTimeMillis()));
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    runStage(event, stage2);

    BestPossibleStateOutput output =
        event.getAttribute(AttributeName.BEST_POSSIBLE_STATE.toString());
    for (int p = 0; p < 5; p++) {
      Partition resource = new Partition("testResourceName_" + p);
      AssertJUnit.assertEquals("MASTER", output.getInstanceStateMap("testResourceName", resource)
          .get("localhost_" + (p + 1) % 5));
    }
    System.out.println("END TestBestPossibleStateCalcStage at "
        + new Date(System.currentTimeMillis()));
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Related Classes of org.apache.helix.model.Partition

  • org.apache.helix.controller.rebalancer.AutoRebalancer
  • org.apache.helix.controller.rebalancer.FallbackRebalancer
  • org.apache.helix.controller.stages.CurrentStateComputationStage
  • org.apache.helix.controller.stages.TestBestPossibleCalcStageCompatibility
  • org.apache.helix.controller.stages.TestBestPossibleStateCalcStage
  • org.apache.helix.controller.stages.TestCurrentStateComputationStage
  • org.apache.helix.controller.stages.TestMessageThrottleStage
  • org.apache.helix.controller.stages.TestRebalancePipeline
  • org.apache.helix.monitoring.mbeans.TestClusterStatusMonitor
  • org.apache.helix.task.FixedTargetTaskRebalancer
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