Package com.linkedin.helix.model

Examples of com.linkedin.helix.model.Partition

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                      "SLAVE",
                      "TestDB",
                      "localhost_0");
    selectMessages.add(msg);

    msgSelectOutput.addMessages("TestDB", new Partition("TestDB_0"), selectMessages);
    event.addAttribute(AttributeName.MESSAGES_SELECTED.toString(), msgSelectOutput);

    runStage(event, throttleStage);

    MessageThrottleStageOutput msgThrottleOutput =
        event.getAttribute(AttributeName.MESSAGES_THROTTLE.toString());
    Assert.assertEquals(msgThrottleOutput.getMessages("TestDB", new Partition("TestDB_0"))
                                         .size(),
                        1);

    System.out.println("END " + clusterName + " at "
        + new Date(System.currentTimeMillis()));
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    selectMessages.add(msg3);
    selectMessages.add(msg4);
    selectMessages.add(msg5); // should be throttled
    selectMessages.add(msg6); // should be throttled

    msgSelectOutput.addMessages("TestDB", new Partition("TestDB_0"), selectMessages);
    event.addAttribute(AttributeName.MESSAGES_SELECTED.toString(), msgSelectOutput);

    runStage(event, throttleStage);

    MessageThrottleStageOutput msgThrottleOutput =
        event.getAttribute(AttributeName.MESSAGES_THROTTLE.toString());
    List<Message> throttleMessages =
        msgThrottleOutput.getMessages("TestDB", new Partition("TestDB_0"));
    Assert.assertEquals(throttleMessages.size(), 4);
    Assert.assertTrue(throttleMessages.contains(msg1));
    Assert.assertTrue(throttleMessages.contains(msg2));
    Assert.assertTrue(throttleMessages.contains(msg3));
    Assert.assertTrue(throttleMessages.contains(msg4));
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    runStage(event, new ReadClusterDataStage());
    runStage(event, stage);
    CurrentStateOutput output =
        event.getAttribute(AttributeName.CURRENT_STATE.toString());
    AssertJUnit.assertEquals(output.getCurrentStateMap("testResourceName",
                                                       new Partition("testResourceName_0"))
                                   .size(),
                             0);
  }
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    runStage(event, new ReadClusterDataStage());
    runStage(event, stage);
    CurrentStateOutput output1 =
        event.getAttribute(AttributeName.CURRENT_STATE.toString());
    AssertJUnit.assertEquals(output1.getCurrentStateMap("testResourceName",
                                                        new Partition("testResourceName_0"))
                                    .size(),
                             0);

    // Add a state transition messages
    Message message = new Message(Message.MessageType.STATE_TRANSITION, "msg1");
    message.setFromState("OFFLINE");
    message.setToState("SLAVE");
    message.setResourceName("testResourceName");
    message.setPartitionName("testResourceName_1");
    message.setTgtName("localhost_3");
    message.setTgtSessionId("session_3");

    Builder keyBuilder = accessor.keyBuilder();
    accessor.setProperty(keyBuilder.message("localhost_" + 3, message.getId()), message);

    runStage(event, new ReadClusterDataStage());
    runStage(event, stage);
    CurrentStateOutput output2 =
        event.getAttribute(AttributeName.CURRENT_STATE.toString());
    String pendingState =
        output2.getPendingState("testResourceName",
                                new Partition("testResourceName_1"),
                                "localhost_3");
    AssertJUnit.assertEquals(pendingState, "SLAVE");

    ZNRecord record1 = new ZNRecord("testResourceName");
    // Add a current state that matches sessionId and one that does not match
    CurrentState stateWithLiveSession = new CurrentState(record1);
    stateWithLiveSession.setSessionId("session_3");
    stateWithLiveSession.setStateModelDefRef("MasterSlave");
    stateWithLiveSession.setState("testResourceName_1", "OFFLINE");
    ZNRecord record2 = new ZNRecord("testResourceName");
    CurrentState stateWithDeadSession = new CurrentState(record2);
    stateWithDeadSession.setSessionId("session_dead");
    stateWithDeadSession.setStateModelDefRef("MasterSlave");
    stateWithDeadSession.setState("testResourceName_1", "MASTER");

    accessor.setProperty(keyBuilder.currentState("localhost_3",
                                                 "session_3",
                                                 "testResourceName"),
                         stateWithLiveSession);
    accessor.setProperty(keyBuilder.currentState("localhost_3",
                                                 "session_dead",
                                                 "testResourceName"),
                         stateWithDeadSession);
    runStage(event, new ReadClusterDataStage());
    runStage(event, stage);
    CurrentStateOutput output3 =
        event.getAttribute(AttributeName.CURRENT_STATE.toString());
    String currentState =
        output3.getCurrentState("testResourceName",
                                new Partition("testResourceName_1"),
                                "localhost_3");
    AssertJUnit.assertEquals(currentState, "OFFLINE");

  }
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          for (String partitionName : partErrStates.keySet())
          {
            String instanceName = partErrStates.get(partitionName);
            Map<String, String> partStateMap =
                bestPossOutput.getInstanceStateMap(resourceName,
                                                   new Partition(partitionName));
            partStateMap.put(instanceName, "ERROR");
          }
        }
      }

     
      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("DROPPED"))
              {
                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.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 "
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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");
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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 "
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    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));
    }
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        }

        if (!message.getGroupMessageMode())
        {
          String partitionName = message.getPartitionName();
          Partition partition = resource.getPartition(partitionName);
          if (partition != null)
          {
            currentStateOutput.setPendingState(resourceName,
                                               partition,
                                               instanceName,
                                               message.getToState());
          }
          else
          {
            // log
          }
        }
        else
        {
          List<String> partitionNames = message.getPartitionNames();
          if (!partitionNames.isEmpty())
          {
            for (String partitionName : partitionNames)
            {
              Partition partition = resource.getPartition(partitionName);
              if (partition != null)
              {
                currentStateOutput.setPendingState(resourceName,
                                                   partition,
                                                   instanceName,
                                                   message.getToState());
              }
              else
              {
                // log
              }
            }
          }
        }
      }
    }
    for (LiveInstance instance : liveInstances.values())
    {
      String instanceName = instance.getInstanceName();

      String clientSessionId = instance.getSessionId();
      Map<String, CurrentState> currentStateMap =
          cache.getCurrentState(instanceName, clientSessionId);
      for (CurrentState currentState : currentStateMap.values())
      {

        if (!instance.getSessionId().equals(currentState.getSessionId()))
        {
          continue;
        }
        String resourceName = currentState.getResourceName();
        String stateModelDefName = currentState.getStateModelDefRef();
        Resource resource = resourceMap.get(resourceName);
        if (resource == null)
        {
          continue;
        }
        if (stateModelDefName != null)
        {
          currentStateOutput.setResourceStateModelDef(resourceName, stateModelDefName);
        }

        currentStateOutput.setBucketSize(resourceName, currentState.getBucketSize());

        Map<String, String> partitionStateMap = currentState.getPartitionStateMap();
        for (String partitionName : partitionStateMap.keySet())
        {
          Partition partition = resource.getPartition(partitionName);
          if (partition != null)
          {
            currentStateOutput.setCurrentState(resourceName,
                                               partition,
                                               instanceName,
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Related Classes of com.linkedin.helix.model.Partition

  • com.linkedin.helix.controller.stages.CurrentStateComputationStage
  • com.linkedin.helix.controller.stages.TestBestPossibleStateCalcStage
  • com.linkedin.helix.controller.stages.TestCurrentStateComputationStage
  • com.linkedin.helix.controller.stages.TestMessageThrottleStage
  • com.linkedin.helix.controller.stages.TestRebalancePipeline
  • com.linkedin.helix.tools.ClusterStateVerifier
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