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Posted to commits@helix.apache.org by ki...@apache.org on 2013/05/30 18:07:31 UTC
svn commit: r1487903 [1/28] - in /incubator/helix/site-content: ./
apidocs/reference/org/apache/helix/
apidocs/reference/org/apache/helix/messaging/handling/
apidocs/reference/org/apache/helix/model/
apidocs/reference/org/apache/helix/participant/state...
Author: kishoreg
Date: Thu May 30 16:07:26 2013
New Revision: 1487903
URL: http://svn.apache.org/r1487903
Log:
Site checkin for project Apache Helix
Added:
incubator/helix/site-content/ApiUsage.html
incubator/helix/site-content/Sample_App.html
incubator/helix/site-content/apidocs/reference/org/apache/helix/ConfigScope.ConfigScopeProperty.html
incubator/helix/site-content/apidocs/reference/org/apache/helix/ConfigScope.html
incubator/helix/site-content/apidocs/reference/org/apache/helix/ConfigScopeBuilder.html
incubator/helix/site-content/apidocs/reference/org/apache/helix/messaging/handling/HelixTask.TimeoutCancelTask.html
incubator/helix/site-content/apidocs/reference/org/apache/helix/model/ClusterConstraints.ConstraintItem.html
incubator/helix/site-content/apidocs/reference/org/apache/helix/model/IdealState.AutoModeBuilder.html
incubator/helix/site-content/apidocs/reference/org/apache/helix/model/IdealState.CustomBuilder.html
incubator/helix/site-content/apidocs/reference/org/apache/helix/model/IdealState.SemiAutoBuilder.html
incubator/helix/site-content/apidocs/reference/org/apache/helix/participant/statemachine/StateTransitionTableBuilder.html
incubator/helix/site-content/apidocs/reference/org/apache/helix/tools/IdealStateCalculatorForStorageNode.html
incubator/helix/site-content/apidocs/reference/org/apache/helix/tools/PropertiesReader.html
incubator/helix/site-content/involved/release.html
incubator/helix/site-content/xref-test/org/apache/helix/ExternalCommand.html
incubator/helix/site-content/xref-test/org/apache/helix/integration/TestGroupMessage.html
incubator/helix/site-content/xref/org/apache/helix/ConfigScope.html
incubator/helix/site-content/xref/org/apache/helix/ConfigScopeBuilder.html
incubator/helix/site-content/xref/org/apache/helix/participant/statemachine/StateTransitionTableBuilder.html
incubator/helix/site-content/xref/org/apache/helix/tools/IdealStateCalculatorForStorageNode.html
incubator/helix/site-content/xref/org/apache/helix/tools/PropertiesReader.html
Modified:
incubator/helix/site-content/Architecture.html
incubator/helix/site-content/Concepts.html
incubator/helix/site-content/Features.html
incubator/helix/site-content/Quickstart.html
incubator/helix/site-content/Tutorial.html
incubator/helix/site-content/UseCases.html
incubator/helix/site-content/checkstyle-aggregate.html
incubator/helix/site-content/checkstyle.rss
incubator/helix/site-content/dependencies.html
incubator/helix/site-content/dependency-convergence.html
incubator/helix/site-content/dependency-info.html
incubator/helix/site-content/dependency-management.html
incubator/helix/site-content/distribution-management.html
incubator/helix/site-content/download.html
incubator/helix/site-content/helix-admin-webapp/dependencies.html
incubator/helix/site-content/helix-admin-webapp/dependency-convergence.html
incubator/helix/site-content/helix-admin-webapp/dependency-info.html
incubator/helix/site-content/helix-admin-webapp/dependency-management.html
incubator/helix/site-content/helix-admin-webapp/distribution-management.html
incubator/helix/site-content/helix-admin-webapp/index.html
incubator/helix/site-content/helix-admin-webapp/integration.html
incubator/helix/site-content/helix-admin-webapp/issue-tracking.html
incubator/helix/site-content/helix-admin-webapp/license.html
incubator/helix/site-content/helix-admin-webapp/mail-lists.html
incubator/helix/site-content/helix-admin-webapp/plugin-management.html
incubator/helix/site-content/helix-admin-webapp/plugins.html
incubator/helix/site-content/helix-admin-webapp/project-info.html
incubator/helix/site-content/helix-admin-webapp/project-reports.html
incubator/helix/site-content/helix-admin-webapp/project-summary.html
incubator/helix/site-content/helix-admin-webapp/sonar.html
incubator/helix/site-content/helix-admin-webapp/source-repository.html
incubator/helix/site-content/helix-admin-webapp/team-list.html
incubator/helix/site-content/helix-agent/dependencies.html
incubator/helix/site-content/helix-agent/dependency-convergence.html
incubator/helix/site-content/helix-agent/dependency-info.html
incubator/helix/site-content/helix-agent/dependency-management.html
incubator/helix/site-content/helix-agent/distribution-management.html
incubator/helix/site-content/helix-agent/index.html
incubator/helix/site-content/helix-agent/integration.html
incubator/helix/site-content/helix-agent/issue-tracking.html
incubator/helix/site-content/helix-agent/license.html
incubator/helix/site-content/helix-agent/mail-lists.html
incubator/helix/site-content/helix-agent/plugin-management.html
incubator/helix/site-content/helix-agent/plugins.html
incubator/helix/site-content/helix-agent/project-info.html
incubator/helix/site-content/helix-agent/project-reports.html
incubator/helix/site-content/helix-agent/project-summary.html
incubator/helix/site-content/helix-agent/sonar.html
incubator/helix/site-content/helix-agent/source-repository.html
incubator/helix/site-content/helix-agent/team-list.html
incubator/helix/site-content/helix-core/dependencies.html
incubator/helix/site-content/helix-core/dependency-convergence.html
incubator/helix/site-content/helix-core/dependency-info.html
incubator/helix/site-content/helix-core/dependency-management.html
incubator/helix/site-content/helix-core/distribution-management.html
incubator/helix/site-content/helix-core/index.html
incubator/helix/site-content/helix-core/integration.html
incubator/helix/site-content/helix-core/issue-tracking.html
incubator/helix/site-content/helix-core/license.html
incubator/helix/site-content/helix-core/mail-lists.html
incubator/helix/site-content/helix-core/plugin-management.html
incubator/helix/site-content/helix-core/plugins.html
incubator/helix/site-content/helix-core/project-info.html
incubator/helix/site-content/helix-core/project-reports.html
incubator/helix/site-content/helix-core/project-summary.html
incubator/helix/site-content/helix-core/sonar.html
incubator/helix/site-content/helix-core/source-repository.html
incubator/helix/site-content/helix-core/team-list.html
incubator/helix/site-content/index.html
incubator/helix/site-content/integration.html
incubator/helix/site-content/involved/building.html
incubator/helix/site-content/issue-tracking.html
incubator/helix/site-content/jira-report.html
incubator/helix/site-content/license.html
incubator/helix/site-content/mail-lists.html
incubator/helix/site-content/mockservice/dependencies.html
incubator/helix/site-content/mockservice/dependency-convergence.html
incubator/helix/site-content/mockservice/dependency-info.html
incubator/helix/site-content/mockservice/dependency-management.html
incubator/helix/site-content/mockservice/distribution-management.html
incubator/helix/site-content/mockservice/index.html
incubator/helix/site-content/mockservice/integration.html
incubator/helix/site-content/mockservice/issue-tracking.html
incubator/helix/site-content/mockservice/license.html
incubator/helix/site-content/mockservice/mail-lists.html
incubator/helix/site-content/mockservice/plugin-management.html
incubator/helix/site-content/mockservice/plugins.html
incubator/helix/site-content/mockservice/project-info.html
incubator/helix/site-content/mockservice/project-reports.html
incubator/helix/site-content/mockservice/project-summary.html
incubator/helix/site-content/mockservice/sonar.html
incubator/helix/site-content/mockservice/source-repository.html
incubator/helix/site-content/mockservice/team-list.html
incubator/helix/site-content/modules.html
incubator/helix/site-content/plugin-management.html
incubator/helix/site-content/plugins.html
incubator/helix/site-content/privacy-policy.html
incubator/helix/site-content/project-info.html
incubator/helix/site-content/project-reports.html
incubator/helix/site-content/project-summary.html
incubator/helix/site-content/recipes/dependencies.html
incubator/helix/site-content/recipes/dependency-convergence.html
incubator/helix/site-content/recipes/dependency-info.html
incubator/helix/site-content/recipes/dependency-management.html
incubator/helix/site-content/recipes/distributed-lock-manager/dependencies.html
incubator/helix/site-content/recipes/distributed-lock-manager/dependency-convergence.html
incubator/helix/site-content/recipes/distributed-lock-manager/dependency-info.html
incubator/helix/site-content/recipes/distributed-lock-manager/dependency-management.html
incubator/helix/site-content/recipes/distributed-lock-manager/distribution-management.html
incubator/helix/site-content/recipes/distributed-lock-manager/index.html
incubator/helix/site-content/recipes/distributed-lock-manager/integration.html
incubator/helix/site-content/recipes/distributed-lock-manager/issue-tracking.html
incubator/helix/site-content/recipes/distributed-lock-manager/license.html
incubator/helix/site-content/recipes/distributed-lock-manager/mail-lists.html
incubator/helix/site-content/recipes/distributed-lock-manager/plugin-management.html
incubator/helix/site-content/recipes/distributed-lock-manager/plugins.html
incubator/helix/site-content/recipes/distributed-lock-manager/project-info.html
incubator/helix/site-content/recipes/distributed-lock-manager/project-reports.html
incubator/helix/site-content/recipes/distributed-lock-manager/project-summary.html
incubator/helix/site-content/recipes/distributed-lock-manager/sonar.html
incubator/helix/site-content/recipes/distributed-lock-manager/source-repository.html
incubator/helix/site-content/recipes/distributed-lock-manager/team-list.html
incubator/helix/site-content/recipes/distribution-management.html
incubator/helix/site-content/recipes/index.html
incubator/helix/site-content/recipes/integration.html
incubator/helix/site-content/recipes/issue-tracking.html
incubator/helix/site-content/recipes/license.html
incubator/helix/site-content/recipes/lock_manager.html
incubator/helix/site-content/recipes/mail-lists.html
incubator/helix/site-content/recipes/modules.html
incubator/helix/site-content/recipes/plugin-management.html
incubator/helix/site-content/recipes/plugins.html
incubator/helix/site-content/recipes/project-info.html
incubator/helix/site-content/recipes/project-reports.html
incubator/helix/site-content/recipes/project-summary.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/dependencies.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/dependency-convergence.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/dependency-info.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/dependency-management.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/distribution-management.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/index.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/integration.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/issue-tracking.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/license.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/mail-lists.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/plugin-management.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/plugins.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/project-info.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/project-reports.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/project-summary.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/sonar.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/source-repository.html
incubator/helix/site-content/recipes/rabbitmq-consumer-group/team-list.html
incubator/helix/site-content/recipes/rabbitmq_consumer_group.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/dependencies.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/dependency-convergence.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/dependency-info.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/dependency-management.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/distribution-management.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/index.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/integration.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/issue-tracking.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/license.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/mail-lists.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/plugin-management.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/plugins.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/project-info.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/project-reports.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/project-summary.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/sonar.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/source-repository.html
incubator/helix/site-content/recipes/rsync-replicated-file-system/team-list.html
incubator/helix/site-content/recipes/rsync_replicated_file_store.html
incubator/helix/site-content/recipes/service-discovery/dependencies.html
incubator/helix/site-content/recipes/service-discovery/dependency-convergence.html
incubator/helix/site-content/recipes/service-discovery/dependency-info.html
incubator/helix/site-content/recipes/service-discovery/dependency-management.html
incubator/helix/site-content/recipes/service-discovery/distribution-management.html
incubator/helix/site-content/recipes/service-discovery/index.html
incubator/helix/site-content/recipes/service-discovery/integration.html
incubator/helix/site-content/recipes/service-discovery/issue-tracking.html
incubator/helix/site-content/recipes/service-discovery/license.html
incubator/helix/site-content/recipes/service-discovery/mail-lists.html
incubator/helix/site-content/recipes/service-discovery/plugin-management.html
incubator/helix/site-content/recipes/service-discovery/plugins.html
incubator/helix/site-content/recipes/service-discovery/project-info.html
incubator/helix/site-content/recipes/service-discovery/project-reports.html
incubator/helix/site-content/recipes/service-discovery/project-summary.html
incubator/helix/site-content/recipes/service-discovery/sonar.html
incubator/helix/site-content/recipes/service-discovery/source-repository.html
incubator/helix/site-content/recipes/service-discovery/team-list.html
incubator/helix/site-content/recipes/service_discovery.html
incubator/helix/site-content/recipes/sonar.html
incubator/helix/site-content/recipes/source-repository.html
incubator/helix/site-content/recipes/task-execution/dependencies.html
incubator/helix/site-content/recipes/task-execution/dependency-convergence.html
incubator/helix/site-content/recipes/task-execution/dependency-info.html
incubator/helix/site-content/recipes/task-execution/dependency-management.html
incubator/helix/site-content/recipes/task-execution/distribution-management.html
incubator/helix/site-content/recipes/task-execution/index.html
incubator/helix/site-content/recipes/task-execution/integration.html
incubator/helix/site-content/recipes/task-execution/issue-tracking.html
incubator/helix/site-content/recipes/task-execution/license.html
incubator/helix/site-content/recipes/task-execution/mail-lists.html
incubator/helix/site-content/recipes/task-execution/plugin-management.html
incubator/helix/site-content/recipes/task-execution/plugins.html
incubator/helix/site-content/recipes/task-execution/project-info.html
incubator/helix/site-content/recipes/task-execution/project-reports.html
incubator/helix/site-content/recipes/task-execution/project-summary.html
incubator/helix/site-content/recipes/task-execution/sonar.html
incubator/helix/site-content/recipes/task-execution/source-repository.html
incubator/helix/site-content/recipes/task-execution/team-list.html
incubator/helix/site-content/recipes/task_dag_execution.html
incubator/helix/site-content/recipes/team-list.html
incubator/helix/site-content/releasenotes/release-0.6.0-incubating.html
incubator/helix/site-content/releasenotes/release-0.6.1-incubating.html
incubator/helix/site-content/releasing.html
incubator/helix/site-content/sonar.html
incubator/helix/site-content/source-repository.html
incubator/helix/site-content/team-list.html
incubator/helix/site-content/tutorial_admin.html
incubator/helix/site-content/tutorial_controller.html
incubator/helix/site-content/tutorial_health.html
incubator/helix/site-content/tutorial_messaging.html
incubator/helix/site-content/tutorial_participant.html
incubator/helix/site-content/tutorial_propstore.html
incubator/helix/site-content/tutorial_rebalance.html
incubator/helix/site-content/tutorial_spectator.html
incubator/helix/site-content/tutorial_state.html
incubator/helix/site-content/tutorial_throttling.html
incubator/helix/site-content/xref-test/allclasses-frame.html
incubator/helix/site-content/xref-test/org/apache/helix/healthcheck/TestSimpleAlert.html
incubator/helix/site-content/xref-test/org/apache/helix/healthcheck/TestSimpleWildcardAlert.html
incubator/helix/site-content/xref-test/org/apache/helix/healthcheck/package-frame.html
incubator/helix/site-content/xref-test/org/apache/helix/healthcheck/package-summary.html
incubator/helix/site-content/xref-test/org/apache/helix/integration/TestMessagingService.html
incubator/helix/site-content/xref-test/org/apache/helix/messaging/TestAsyncCallback.html
incubator/helix/site-content/xref-test/org/apache/helix/messaging/TestAsyncCallbackSvc.html
incubator/helix/site-content/xref-test/org/apache/helix/messaging/package-frame.html
incubator/helix/site-content/xref-test/org/apache/helix/messaging/package-summary.html
incubator/helix/site-content/xref/allclasses-frame.html
incubator/helix/site-content/xref/org/apache/helix/model/AlertStatus.html
incubator/helix/site-content/xref/org/apache/helix/model/Alerts.html
incubator/helix/site-content/xref/org/apache/helix/model/package-frame.html
incubator/helix/site-content/xref/org/apache/helix/model/package-summary.html
incubator/helix/site-content/xref/org/apache/helix/webapp/resources/ZkPathResource.html
Added: incubator/helix/site-content/ApiUsage.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/ApiUsage.html?rev=1487903&view=auto
==============================================================================
--- incubator/helix/site-content/ApiUsage.html (added)
+++ incubator/helix/site-content/ApiUsage.html Thu May 30 16:07:26 2013
@@ -0,0 +1,659 @@
+<!DOCTYPE html>
+<!--
+ | Generated by Apache Maven Doxia at Jan 25, 2013
+ | Rendered using Apache Maven Fluido Skin 1.3.0
+-->
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+ <head>
+ <meta charset="UTF-8" />
+ <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+ <meta name="Date-Revision-yyyymmdd" content="20130125" />
+ <meta http-equiv="Content-Language" content="en" />
+ <title>Apache Helix - </title>
+ <link rel="stylesheet" href="./css/apache-maven-fluido-1.3.0.min.css" />
+ <link rel="stylesheet" href="./css/site.css" />
+ <link rel="stylesheet" href="./css/print.css" media="print" />
+
+
+ <script type="text/javascript" src="./js/apache-maven-fluido-1.3.0.min.js"></script>
+
+
+ </head>
+ <body class="topBarEnabled">
+
+
+
+
+
+ <div id="topbar" class="navbar navbar-fixed-top ">
+ <div class="navbar-inner">
+ <div class="container-fluid">
+ <a data-target=".nav-collapse" data-toggle="collapse" class="btn btn-navbar">
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ </a>
+
+ <ul class="nav">
+ <li class="dropdown">
+ <a href="#" class="dropdown-toggle" data-toggle="dropdown">Helix <b class="caret"></b></a>
+ <ul class="dropdown-menu">
+
+ <li> <a href="index.html" title="About">About</a>
+</li>
+
+ <li> <a href="Quickstart.html" title="Quick Start">Quick Start</a>
+</li>
+
+ <li> <a href="ApiUsage.html" title="Api Usage">Api Usage</a>
+</li>
+
+ <li> <a href="Architecture.html" title="Architecture">Architecture</a>
+</li>
+
+ <li> <a href="Features.html" title="Features">Features</a>
+</li>
+
+ <li> <a href="releasenotes/release-0.6.0-incubating.html" title="Current release 0.6.0-incubating">Current release 0.6.0-incubating</a>
+</li>
+
+ <li> <a href="jira-report.html" title="Current Version Change Log">Current Version Change Log</a>
+</li>
+ </ul>
+ </li>
+ <li class="dropdown">
+ <a href="#" class="dropdown-toggle" data-toggle="dropdown">Recipes <b class="caret"></b></a>
+ <ul class="dropdown-menu">
+
+ <li> <a href="recipes/lock_manager.html" title="Distributed lock manager">Distributed lock manager</a>
+</li>
+
+ <li> <a href="recipes/rabbitmq_consumer_group.html" title="Rabbit MQ consumer group">Rabbit MQ consumer group</a>
+</li>
+
+ <li> <a href="recipes/rsync_replicated_file_store.html" title="Rsync replicated file store">Rsync replicated file store</a>
+</li>
+ </ul>
+ </li>
+ <li class="dropdown">
+ <a href="#" class="dropdown-toggle" data-toggle="dropdown">Get Involved <b class="caret"></b></a>
+ <ul class="dropdown-menu">
+
+ <li> <a href="mail-lists.html" title="Mailing Lists">Mailing Lists</a>
+</li>
+
+ <li> <a href="issue-tracking.html" title="Issues">Issues</a>
+</li>
+
+ <li> <a href="team-list.html" title="Team">Team</a>
+</li>
+
+ <li> <a href="source-repository.html" title="Sources">Sources</a>
+</li>
+
+ <li> <a href="integration.html" title="Continuous Integration">Continuous Integration</a>
+</li>
+
+ <li> <a href="involved/building.html" title="Building Guide">Building Guide</a>
+</li>
+
+ <li> <a href="releasing.html" title="Release Guide">Release Guide</a>
+</li>
+ </ul>
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+ <!-- -
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements. See the NOTICE file
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+regarding copyright ownership. The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
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+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied. See the License for the
+specific language governing permissions and limitations
+under the License. --><h1>Create an instance of Manager</h1><p>The first step of using the Helix api will be creating a Helix manager instance. It requires the following parameters:</p>
+<ul>
+ <li>clusterName: A logical name to represent the group of nodes</li>
+ <li>instanceName: A logical name of the process creating the manager instance. Generally this is host:port.</li>
+ <li>instanceType: Type of the process. This can be one of the following types:
+ <ul>
+ <li>CONTROLLER: Process that controls the cluster, any number of controllers can be started but only one will be active at any given time.</li>
+ <li>PARTICIPANT: Process that performs the actual task in the distributed system.</li>
+ <li>SPECTATOR: Process that observes the changes in the cluster.</li>
+ <li>ADMIN: To carry out system admin actions.</li>
+ </ul></li>
+ <li>zkConnectString: Connection string to Zookeeper. This is of the form host1:port1,host2:port2,host3:port3.</li>
+</ul>
+<div class="source"><pre class="prettyprint"> manager = HelixManagerFactory.getZKHelixManager(clusterName,
+ instanceName,
+ instanceType,
+ zkConnectString);
+</pre></div><h1>Setting up a cluster</h1><p>Initial setup of a cluster, involves creating appropriate znodes in the zookeeper. </p>
+<div class="source"><pre class="prettyprint"> //Create setuptool instance
+ ClusterSetupTool setupTool = new ClusterSetupTool(zkConnectString);
+ //Create cluster namespace in zookeeper
+ setupTool.addCluster(clusterName, true);
+ //Add six Participant instances, each instance must have a unique id. host:port is the standard convention
+ String instances[] = new String[6];
+ for (int i = 0; i < storageInstanceInfoArray.length; i++)
+ {
+ instance[i] = "localhost:" + (8900 + i);
+ }
+ setupTool.addInstancesToCluster(clusterName, instances);
+ //add the resource with 10 partitions to the cluster. Using MasterSlave state model.
+ //See the section on how to configure a application specific state model
+ setupTool.addResourceToCluster(clusterName, "TestDB", 10, "MasterSlave");
+ //This will do the assignment of partitions to instances. Assignment algorithm is based on consistent hashing and RUSH.
+ //See how to do custom partition assignment
+ setupTool.rebalanceResource(clusterName, "TestDB", 3);
+</pre></div><div class="section"><h2>Participant<a name="Participant"></a></h2><p>Starting up a participant is pretty straightforward. After the Helix manager instance is created, only thing that needs to be registered is the state model factory. The Methods on the State Model will be called when controller sends transitions to the Participant.</p>
+<div class="source"><pre class="prettyprint"> manager = HelixManagerFactory.getZKHelixManager(clusterName,
+ instanceName,
+ InstanceType.PARTICIPANT,
+ zkConnectString);
+ StateMachineEngine stateMach = manager.getStateMachineEngine();
+ //create a stateModelFactory that returns a statemodel object for each partition.
+ stateModelFactory = new OnlineOfflineStateModelFactory();
+ stateMach.registerStateModelFactory(stateModelType, stateModelFactory);
+ manager.connect();
+</pre></div>
+<div class="source"><pre class="prettyprint">public class OnlineOfflineStateModelFactory extends
+ StateModelFactory<StateModel> {
+ @Override
+ public StateModel createNewStateModel(String stateUnitKey) {
+ OnlineOfflineStateModel stateModel = new OnlineOfflineStateModel();
+ return stateModel;
+ }
+ @StateModelInfo(states = "{'OFFLINE','ONLINE'}", initialState = "OFFINE")
+ public static class OnlineOfflineStateModel extends StateModel {
+ @Transition(from = "OFFLINE", to = "ONLINE")
+ public void onBecomeOnlineFromOffline(Message message,
+ NotificationContext context) {
+ System.out
+ .println("OnlineOfflineStateModel.onBecomeOnlineFromOffline()");
+ //Application logic to handle transition
+ }
+ @Transition(from = "ONLINE", to = "OFFLINE")
+ public void onBecomeOfflineFromOnline(Message message,
+ NotificationContext context) {
+ System.out
+ .println("OnlineOfflineStateModel.onBecomeOfflineFromOnline()");
+ //Application logic to handle transition
+ }
+ }
+}
+</pre></div></div><div class="section"><h2>Controller Code<a name="Controller_Code"></a></h2><p>Controller needs to know about all changes in the cluster. Helix comes with default implementation to handle all changes in the cluster. If you have a need to add additional functionality, see GenericHelixController on how to configure the pipeline.</p>
+<div class="source"><pre class="prettyprint"> manager = HelixManagerFactory.getZKHelixManager(clusterName,
+ instanceName,
+ InstanceType.CONTROLLER,
+ zkConnectString);
+ manager.connect();
+ GenericHelixController controller = new GenericHelixController();
+ manager.addConfigChangeListener(controller);
+ manager.addLiveInstanceChangeListener(controller);
+ manager.addIdealStateChangeListener(controller);
+ manager.addExternalViewChangeListener(controller);
+ manager.addControllerListener(controller);
+</pre></div><p>This above snippet shows how the controller is started. You can also start the controller using command line interface.</p>
+<div class="source"><pre class="prettyprint">cd helix
+mvn clean install -Dmaven.test.skip=true
+cd helix-core/target/helix-core-pkg/bin
+chmod +x *
+./run-helix-controller.sh --zkSvr <ZookeeperServerAddress(Required)> --cluster <Cluster name (Required)>
+</pre></div></div><div class="section"><h2>Spectator Code<a name="Spectator_Code"></a></h2><p>A spectator simply observes all cluster is notified when the state of the system changes. Helix consolidates the state of entire cluster in one Znode called ExternalView. Helix provides a default implementation RoutingTableProvider that caches the cluster state and updates it when there is a change in the cluster</p>
+<div class="source"><pre class="prettyprint">manager = HelixManagerFactory.getZKHelixManager(clusterName,
+ instanceName,
+ InstanceType.PARTICIPANT,
+ zkConnectString);
+manager.connect();
+RoutingTableProvider routingTableProvider = new RoutingTableProvider();
+manager.addExternalViewChangeListener(routingTableProvider);
+
+</pre></div><p>In order to figure out who is serving a partition, here are the apis</p>
+<div class="source"><pre class="prettyprint">instances = routingTableProvider.getInstances("DBNAME", "PARITION_NAME", "PARTITION_STATE");
+</pre></div></div><div class="section"><h2>Helix Admin operations<a name="Helix_Admin_operations"></a></h2><p>Helix provides multiple ways to administer the cluster. It has a command line interface and also a REST interface.</p>
+<div class="source"><pre class="prettyprint">cd helix
+mvn clean install -Dmaven.test.skip=true
+cd helix-core/target/helix-core-pkg/bin
+chmod +x *
+./helix-admin.sh --help
+Provide zookeeper address. Required for all commands
+ --zkSvr <ZookeeperServerAddress(Required)>
+
+Add a new cluster
+ --addCluster <clusterName>
+
+Add a new Instance to a cluster
+ --addNode <clusterName InstanceAddress(host:port)>
+
+Add a State model to a cluster
+ --addStateModelDef <clusterName <filename>>
+
+Add a resource to a cluster
+ --addResource <clusterName resourceName partitionNum stateModelRef <mode(AUTO_REBALANCE|AUTO|CUSTOM)>>
+
+Upload an IdealState(Partition to Node Mapping)
+ --addIdealState <clusterName resourceName <filename>>
+
+Delete a cluster
+ --dropCluster <clusterName>
+
+Delete a resource
+ --dropResource <clusterName resourceName> Drop an existing resource from a cluster
+
+Drop an existing Instance from a cluster
+ --dropNode <clusterName InstanceAddress(host:port)>
+
+Enable/disable the entire cluster, this will basically pause the controller which means no transitions will be trigger, but the existing node sin the cluster continue to function
+ --enableCluster <clusterName>
+
+Enable/disable a Instance. Useful to take a faulty node out of the cluster.
+ --enableInstance <clusterName InstanceName true/false>
+
+Enable/disable a partition
+ --enablePartition <clusterName instanceName resourceName partitionName true/false>
+
+
+ --listClusterInfo <clusterName> Query info of a cluster
+ --listClusters List existing clusters
+ --listInstanceInfo <clusterName InstanceName> Query info of a Instance in a cluster
+ --listInstances <clusterName> List Instances in a cluster
+ --listPartitionInfo <clusterName resourceName partitionName> Query info of a partition
+ --listResourceInfo <clusterName resourceName> Query info of a resource
+ --listResources <clusterName> List resources hosted in a cluster
+ --listStateModel <clusterName stateModelName> Query info of a state model in a cluster
+ --listStateModels <clusterName> Query info of state models in a cluster
+
+</pre></div></div><div class="section"><h2>Idealstate modes and configuration<a name="Idealstate_modes_and_configuration"></a></h2>
+<ul>
+ <li>AUTO mode: Partition to Node assignment is pre-generated using consistent hashing</li>
+</ul>
+<div class="source"><pre class="prettyprint"> setupTool.addResourceToCluster(clusterName, resourceName, partitionNumber, "MasterSlave")
+ setupTool.rebalanceStorageCluster(clusterName, resourceName, replicas)
+</pre></div>
+<ul>
+ <li>AUTO_REBALANCE mode: Partition to Node assignment is generated dynamically by cluster manager based on the nodes that are currently up and running</li>
+</ul>
+<div class="source"><pre class="prettyprint"> setupTool.addResourceToCluster(clusterName, resourceName, partitionNumber, "MasterSlave", "AUTO_REBALANCE")
+ setupTool.rebalanceStorageCluster(clusterName, resourceName, replicas)
+</pre></div>
+<ul>
+ <li>CUSTOMIZED mode: Allows one to set the is pre-generated from a JSON format file</li>
+</ul><p><tt>
+ setupTool.addIdealState(clusterName, resourceName, idealStateJsonFile)
+</tt></p></div><div class="section"><h2>Configuring state model<a name="Configuring_state_model"></a></h2>
+<div class="source"><pre class="prettyprint">StateModelConfigGenerator generator = new StateModelConfigGenerator();
+ZnRecord stateModelConfig = generator.generateConfigForOnlineOffline();
+StateModelDefinition stateModelDef = new StateModelDefinition(stateModelConfig);
+ClusterSetup setupTool = new ClusterSetup(zkConnectString);
+setupTool.addStateModelDef(cluster,stateModelName,stateModelDef);
+</pre></div><p>See StateModelConfigGenerator to get more info on creating custom state model.</p></div><div class="section"><h2>Messaging Api usage<a name="Messaging_Api_usage"></a></h2><p>See BootstrapProcess.java in examples package to see how Participants can exchange messages with each other.</p>
+<div class="source"><pre class="prettyprint"> ClusterMessagingService messagingService = manager.getMessagingService();
+ //CONSTRUCT THE MESSAGE
+ Message requestBackupUriRequest = new Message(
+ MessageType.USER_DEFINE_MSG, UUID.randomUUID().toString());
+ requestBackupUriRequest
+ .setMsgSubType(BootstrapProcess.REQUEST_BOOTSTRAP_URL);
+ requestBackupUriRequest.setMsgState(MessageState.NEW);
+ //SET THE RECIPIENT CRITERIA, All nodes that satisfy the criteria will receive the message
+ Criteria recipientCriteria = new Criteria();
+ recipientCriteria.setInstanceName("*");
+ recipientCriteria.setRecipientInstanceType(InstanceType.PARTICIPANT);
+ recipientCriteria.setResource("MyDB");
+ recipientCriteria.setPartition("");
+ //Should be processed only the process that is active at the time of sending the message.
+ //This means if the recipient is restarted after message is sent, it will not be processed.
+ recipientCriteria.setSessionSpecific(true);
+ // wait for 30 seconds
+ int timeout = 30000;
+ //The handler that will be invoked when any recipient responds to the message.
+ BootstrapReplyHandler responseHandler = new BootstrapReplyHandler();
+ //This will return only after all recipients respond or after timeout.
+ int sentMessageCount = messagingService.sendAndWait(recipientCriteria,
+ requestBackupUriRequest, responseHandler, timeout);
+</pre></div><p>For more details on MessagingService see ClusterMessagingService</p></div>
+ </div>
+ </div>
+ </div>
+
+ <hr/>
+
+ <footer>
+ <div class="container-fluid">
+ <div class="row span12">Copyright © 2013
+ <a href="http://www.apache.org/">The Apache Software Foundation</a>.
+ All Rights Reserved.
+
+ </div>
+
+
+
+ </div>
+ </footer>
+ </body>
+</html>
\ No newline at end of file
Modified: incubator/helix/site-content/Architecture.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/Architecture.html?rev=1487903&r1=1487902&r2=1487903&view=diff
==============================================================================
--- incubator/helix/site-content/Architecture.html (original)
+++ incubator/helix/site-content/Architecture.html Thu May 30 16:07:26 2013
@@ -1,13 +1,13 @@
<!DOCTYPE html>
<!--
- | Generated by Apache Maven Doxia at May 25, 2013
+ | Generated by Apache Maven Doxia at May 30, 2013
| Rendered using Apache Maven Fluido Skin 1.3.0
-->
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
- <meta name="Date-Revision-yyyymmdd" content="20130525" />
+ <meta name="Date-Revision-yyyymmdd" content="20130530" />
<meta http-equiv="Content-Language" content="en" />
<title>Apache Helix - </title>
<link rel="stylesheet" href="./css/apache-maven-fluido-1.3.0.min.css" />
@@ -168,7 +168,7 @@
- <li id="publishDate" class="pull-right">Last Published: 2013-05-25</li>
+ <li id="publishDate" class="pull-right">Last Published: 2013-05-30</li>
</ul>
</div>
Modified: incubator/helix/site-content/Concepts.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/Concepts.html?rev=1487903&r1=1487902&r2=1487903&view=diff
==============================================================================
--- incubator/helix/site-content/Concepts.html (original)
+++ incubator/helix/site-content/Concepts.html Thu May 30 16:07:26 2013
@@ -1,13 +1,13 @@
<!DOCTYPE html>
<!--
- | Generated by Apache Maven Doxia at May 25, 2013
+ | Generated by Apache Maven Doxia at May 30, 2013
| Rendered using Apache Maven Fluido Skin 1.3.0
-->
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
- <meta name="Date-Revision-yyyymmdd" content="20130525" />
+ <meta name="Date-Revision-yyyymmdd" content="20130530" />
<meta http-equiv="Content-Language" content="en" />
<title>Apache Helix - </title>
<link rel="stylesheet" href="./css/apache-maven-fluido-1.3.0.min.css" />
@@ -168,7 +168,7 @@
- <li id="publishDate" class="pull-right">Last Published: 2013-05-25</li>
+ <li id="publishDate" class="pull-right">Last Published: 2013-05-30</li>
</ul>
</div>
@@ -354,7 +354,7 @@ MASTER | SLAVE | SLAVE | N/A |
<li>Compares the IdealState and current state</li>
<li>Computes the transitions required to reach the IdealState</li>
<li>Issues the transitions to each PARTICIPANT</li>
-</ul><p>The above steps happen for every change in the system. Once the current state matches the IdealState, the system is considered stable which implies 'IDEALSTATE = CURRENTSTATE = EXTERNALVIEW'</p></div><div class="section"><h3>Dynamic IdealState<a name="Dynamic_IdealState"></a></h3><p>One of the things that makes Helix powerful is that IdealState can be changed dynamically. This means one can listen to cluster events like node failures and dynamically change the ideal state. Helix will then take care of triggering the respective transitions in the system.</p><p>Helix comes with few algorithms to automatically compute the IdealState based on the constraints. For example, if you have a resource of 3 partitions and 2 replicas, Helix can automatically compute the IdealState based on the nodes that are currently active. See the <a href="./tutorial_rebalance.html">tutorial</a> to find out more about various execution modes of Helix like AUTO_REBALANCE, AUTO and CUSTOM. </p><
/div></div>
+</ul><p>The above steps happen for every change in the system. Once the current state matches the IdealState, the system is considered stable which implies 'IDEALSTATE = CURRENTSTATE = EXTERNALVIEW'</p></div><div class="section"><h3>Dynamic IdealState<a name="Dynamic_IdealState"></a></h3><p>One of the things that makes Helix powerful is that IdealState can be changed dynamically. This means one can listen to cluster events like node failures and dynamically change the ideal state. Helix will then take care of triggering the respective transitions in the system.</p><p>Helix comes with a few algorithms to automatically compute the IdealState based on the constraints. For example, if you have a resource of 3 partitions and 2 replicas, Helix can automatically compute the IdealState based on the nodes that are currently active. See the <a href="./tutorial_rebalance.html">tutorial</a> to find out more about various execution modes of Helix like AUTO_REBALANCE, AUTO and CUSTOM. </p
></div></div>
</div>
</div>
Modified: incubator/helix/site-content/Features.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/Features.html?rev=1487903&r1=1487902&r2=1487903&view=diff
==============================================================================
--- incubator/helix/site-content/Features.html (original)
+++ incubator/helix/site-content/Features.html Thu May 30 16:07:26 2013
@@ -1,13 +1,13 @@
<!DOCTYPE html>
<!--
- | Generated by Apache Maven Doxia at May 25, 2013
+ | Generated by Apache Maven Doxia at May 30, 2013
| Rendered using Apache Maven Fluido Skin 1.3.0
-->
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
- <meta name="Date-Revision-yyyymmdd" content="20130525" />
+ <meta name="Date-Revision-yyyymmdd" content="20130530" />
<meta http-equiv="Content-Language" content="en" />
<title>Apache Helix - </title>
<link rel="stylesheet" href="./css/apache-maven-fluido-1.3.0.min.css" />
@@ -168,7 +168,7 @@
- <li id="publishDate" class="pull-right">Last Published: 2013-05-25</li>
+ <li id="publishDate" class="pull-right">Last Published: 2013-05-30</li>
</ul>
</div>
Modified: incubator/helix/site-content/Quickstart.html
URL: http://svn.apache.org/viewvc/incubator/helix/site-content/Quickstart.html?rev=1487903&r1=1487902&r2=1487903&view=diff
==============================================================================
--- incubator/helix/site-content/Quickstart.html (original)
+++ incubator/helix/site-content/Quickstart.html Thu May 30 16:07:26 2013
@@ -1,13 +1,13 @@
<!DOCTYPE html>
<!--
- | Generated by Apache Maven Doxia at May 25, 2013
+ | Generated by Apache Maven Doxia at May 30, 2013
| Rendered using Apache Maven Fluido Skin 1.3.0
-->
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
- <meta name="Date-Revision-yyyymmdd" content="20130525" />
+ <meta name="Date-Revision-yyyymmdd" content="20130530" />
<meta http-equiv="Content-Language" content="en" />
<title>Apache Helix - </title>
<link rel="stylesheet" href="./css/apache-maven-fluido-1.3.0.min.css" />
@@ -168,7 +168,7 @@
- <li id="publishDate" class="pull-right">Last Published: 2013-05-25</li>
+ <li id="publishDate" class="pull-right">Last Published: 2013-05-30</li>
</ul>
</div>
@@ -193,13 +193,55 @@ software distributed under the License i
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the License for the
specific language governing permissions and limitations
-under the License. --><div class="section"><h2>Get Helix<a name="Get_Helix"></a></h2><p>First, let's get Helix, either build or download.</p><div class="section"><h3>Build<a name="Build"></a></h3>
+under the License. --><div class="section"><h2>Get Helix<a name="Get_Helix"></a></h2><p>First, let's get Helix, either build it, or download.</p><div class="section"><h3>Build<a name="Build"></a></h3>
<div class="source"><pre class="prettyprint">git clone https://git-wip-us.apache.org/repos/asf/incubator-helix.git
cd incubator-helix
mvn install package -DskipTests
cd helix-core/target/helix-core-pkg/bin //This folder contains all the scripts used in following sections
chmod +x *
-</pre></div></div><div class="section"><h3>Download<a name="Download"></a></h3><p>Download the 0.6.1-incubating release package <a class="externalLink" href="https://dist.apache.org/repos/dist/dev/incubator/helix/0.6.1-incubating/binaries/helix-core-0.6.1-incubating-pkg.tar">here</a> </p></div></div><div class="section"><h2>Overview<a name="Overview"></a></h2><p>In this Quickstart, we'll set up a master-slave replicated, partitioned system. Then we'll demonstrate how to add a node, rebalance the partitions, and show how Helix manages failover.</p><p>The steps:</p>
+</pre></div></div><div class="section"><h3>Download<a name="Download"></a></h3><p>Download the 0.6.1-incubating release package <a class="externalLink" href="https://dist.apache.org/repos/dist/dev/incubator/helix/0.6.1-incubating/binaries/helix-core-0.6.1-incubating-pkg.tar">here</a> </p></div></div><div class="section"><h2>Overview<a name="Overview"></a></h2><p>In this Quickstart, we'll set up a master-slave replicated, partitioned system. Then we'll demonstrate how to add a node, rebalance the partitions, and show how Helix manages failover.</p></div><div class="section"><h2>Let's Do It<a name="Lets_Do_It"></a></h2><p>Helix provides command line interfaces to set up the cluster and view the cluster state. The best way to understand how Helix views a cluster is to build a cluster.</p><div class="section"><div class="section"><h4>First, get to the tools directory<a name="First_get_to_the_tools_directory"></a></h4><p>If you built the code</p>
+<div class="source"><pre class="prettyprint">cd helix/incubator-helix/helix-core/target/helix-core-pkg/bin
+</pre></div><p>If you downloaded the release package, extract it.</p></div></div></div><div class="section"><h2>Short Version<a name="Short_Version"></a></h2><p>You can observe the components working together in this demo, which does the following:</p>
+<ul>
+ <li>Create a cluster</li>
+ <li>Add 2 nodes (participants) to the cluster</li>
+ <li>Set up a resource with 6 partitions and 2 replicas: 1 Master, and 1 Slave per partition</li>
+ <li>Show the cluster state after Helix balances the partitions</li>
+ <li>Add a third node</li>
+ <li>Show the cluster state. Note that the third node has taken mastership of 2 partitions.</li>
+ <li>Kill the third node (Helix takes care of failover)</li>
+ <li>Show the cluster state. Note that the two surviving nodes take over mastership of the partitions from the failed node</li>
+</ul><div class="section"><div class="section"><div class="section"><h5>Run the demo<a name="Run_the_demo"></a></h5>
+<div class="source"><pre class="prettyprint">cd helix/incubator-helix/helix-core/target/helix-core-pkg/bin
+./quickstart.sh
+</pre></div></div><div class="section"><h5>2 nodes are set up and the partitions rebalanced<a name="a2_nodes_are_set_up_and_the_partitions_rebalanced"></a></h5><p>The cluster state is as follows:</p>
+<div class="source"><pre class="prettyprint">CLUSTER STATE: After starting 2 nodes
+ localhost_12000 localhost_12001
+ MyResource_0 M S
+ MyResource_1 S M
+ MyResource_2 M S
+ MyResource_3 M S
+ MyResource_4 S M
+ MyResource_5 S M
+</pre></div><p>Note there is one master and one slave per partition.</p></div><div class="section"><h5>A third node is added and the cluster rebalanced<a name="A_third_node_is_added_and_the_cluster_rebalanced"></a></h5><p>The cluster state changes to:</p>
+<div class="source"><pre class="prettyprint">CLUSTER STATE: After adding a third node
+ localhost_12000 localhost_12001 localhost_12002
+ MyResource_0 S M S
+ MyResource_1 S S M
+ MyResource_2 M S S
+ MyResource_3 S S M
+ MyResource_4 M S S
+ MyResource_5 S M S
+</pre></div><p>Note there is one master and <i>two</i> slaves per partition. This is expected because there are three nodes.</p></div><div class="section"><h5>Finally, a node is killed to simulate a failure<a name="Finally_a_node_is_killed_to_simulate_a_failure"></a></h5><p>Helix makes sure each partition has a master. The cluster state changes to:</p>
+<div class="source"><pre class="prettyprint">CLUSTER STATE: After the 3rd node stops/crashes
+ localhost_12000 localhost_12001 localhost_12002
+ MyResource_0 S M -
+ MyResource_1 S M -
+ MyResource_2 M S -
+ MyResource_3 M S -
+ MyResource_4 M S -
+ MyResource_5 S M -
+</pre></div></div></div></div></div><div class="section"><h2>Long Version<a name="Long_Version"></a></h2><p>Now you can run the same steps by hand. In the detailed version, we'll do the following:</p>
<ul>
<li>Define a cluster</li>
<li>Add two nodes to the cluster</li>
@@ -207,11 +249,7 @@ chmod +x *
<li>Verify that the cluster is healthy and inspect the Helix view</li>
<li>Expand the cluster: add a few nodes and rebalance the partitions</li>
<li>Failover: stop a node and verify the mastership transfer</li>
-</ul></div><div class="section"><h2>Let's Do It<a name="Lets_Do_It"></a></h2><p>Helix provides command line interfaces to set up the cluster and view the cluster state. The best way to understand how Helix views a cluster is to build a cluster.</p><div class="section"><div class="section"><h4>First, get to the tools directory.<a name="First_get_to_the_tools_directory."></a></h4><p>If you built the code</p>
-<div class="source"><pre class="prettyprint">cd helix/helix-core/target/helix-core-pkg/bin
-</pre></div><p>If you downloaded the release package, extract it.</p>
-<div class="source"><pre class="prettyprint">cd helix-core-pkg/bin
-</pre></div></div></div><div class="section"><h3>Install/Start zookeeper<a name="InstallStart_zookeeper"></a></h3><p>Zookeeper can be started in standalone mode or replicated mode.</p><p>More info is available at </p>
+</ul><div class="section"><h3>Install/Start zookeeper<a name="InstallStart_zookeeper"></a></h3><p>Zookeeper can be started in standalone mode or replicated mode.</p><p>More info is available at </p>
<ul>
<li><a class="externalLink" href="http://zookeeper.apache.org/doc/r3.3.3/zookeeperStarted.html">http://zookeeper.apache.org/doc/r3.3.3/zookeeperStarted.html</a></li>
<li><a class="externalLink" href="http://zookeeper.apache.org/doc/trunk/zookeeperAdmin.html#sc_zkMulitServerSetup">http://zookeeper.apache.org/doc/trunk/zookeeperAdmin.html#sc_zkMulitServerSetup</a></li>