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From build...@apache.org
Subject svn commit: r974351 [27/42] - in /websites/staging/zookeeper/trunk/content: ./ doc/r3.4.7/ doc/r3.4.7/api/ doc/r3.4.7/api/org/ doc/r3.4.7/api/org/apache/ doc/r3.4.7/api/org/apache/zookeeper/ doc/r3.4.7/api/org/apache/zookeeper/class-use/ doc/r3.4.7/api...
Date Thu, 03 Dec 2015 04:30:47 GMT
Added: websites/staging/zookeeper/trunk/content/doc/r3.4.7/api/overview-tree.html
==============================================================================
--- websites/staging/zookeeper/trunk/content/doc/r3.4.7/api/overview-tree.html (added)
+++ websites/staging/zookeeper/trunk/content/doc/r3.4.7/api/overview-tree.html Thu Dec  3 04:30:43 2015
@@ -0,0 +1,229 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<!-- NewPage -->
+<html lang="en">
+<head>
+<!-- Generated by javadoc (1.8.0_65) on Tue Nov 10 22:32:26 PST 2015 -->
+<title>Class Hierarchy (ZooKeeper 3.4.7 API)</title>
+<meta name="date" content="2015-11-10">
+<link rel="stylesheet" type="text/css" href="stylesheet.css" title="Style">
+<script type="text/javascript" src="script.js"></script>
+</head>
+<body>
+<script type="text/javascript"><!--
+    try {
+        if (location.href.indexOf('is-external=true') == -1) {
+            parent.document.title="Class Hierarchy (ZooKeeper 3.4.7 API)";
+        }
+    }
+    catch(err) {
+    }
+//-->
+</script>
+<noscript>
+<div>JavaScript is disabled on your browser.</div>
+</noscript>
+<!-- ========= START OF TOP NAVBAR ======= -->
+<div class="topNav"><a name="navbar.top">
+<!--   -->
+</a>
+<div class="skipNav"><a href="#skip.navbar.top" title="Skip navigation links">Skip navigation links</a></div>
+<a name="navbar.top.firstrow">
+<!--   -->
+</a>
+<ul class="navList" title="Navigation">
+<li><a href="overview-summary.html">Overview</a></li>
+<li>Package</li>
+<li>Class</li>
+<li>Use</li>
+<li class="navBarCell1Rev">Tree</li>
+<li><a href="deprecated-list.html">Deprecated</a></li>
+<li><a href="index-all.html">Index</a></li>
+<li><a href="help-doc.html">Help</a></li>
+</ul>
+</div>
+<div class="subNav">
+<ul class="navList">
+<li>Prev</li>
+<li>Next</li>
+</ul>
+<ul class="navList">
+<li><a href="index.html?overview-tree.html" target="_top">Frames</a></li>
+<li><a href="overview-tree.html" target="_top">No&nbsp;Frames</a></li>
+</ul>
+<ul class="navList" id="allclasses_navbar_top">
+<li><a href="allclasses-noframe.html">All&nbsp;Classes</a></li>
+</ul>
+<div>
+<script type="text/javascript"><!--
+  allClassesLink = document.getElementById("allclasses_navbar_top");
+  if(window==top) {
+    allClassesLink.style.display = "block";
+  }
+  else {
+    allClassesLink.style.display = "none";
+  }
+  //-->
+</script>
+</div>
+<a name="skip.navbar.top">
+<!--   -->
+</a></div>
+<!-- ========= END OF TOP NAVBAR ========= -->
+<div class="header">
+<h1 class="title">Hierarchy For All Packages</h1>
+<span class="packageHierarchyLabel">Package Hierarchies:</span>
+<ul class="horizontal">
+<li><a href="org/apache/zookeeper/package-tree.html">org.apache.zookeeper</a>, </li>
+<li><a href="org/apache/zookeeper/client/package-tree.html">org.apache.zookeeper.client</a>, </li>
+<li><a href="org/apache/zookeeper/data/package-tree.html">org.apache.zookeeper.data</a>, </li>
+<li><a href="org/apache/zookeeper/server/package-tree.html">org.apache.zookeeper.server</a>, </li>
+<li><a href="org/apache/zookeeper/server/quorum/package-tree.html">org.apache.zookeeper.server.quorum</a>, </li>
+<li><a href="org/apache/zookeeper/server/upgrade/package-tree.html">org.apache.zookeeper.server.upgrade</a></li>
+</ul>
+</div>
+<div class="contentContainer">
+<h2 title="Class Hierarchy">Class Hierarchy</h2>
+<ul>
+<li type="circle">java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang"><span class="typeNameLink">Object</span></a>
+<ul>
+<li type="circle">org.apache.zookeeper.data.<a href="org/apache/zookeeper/data/ACL.html" title="class in org.apache.zookeeper.data"><span class="typeNameLink">ACL</span></a> (implements org.apache.jute.Record)</li>
+<li type="circle">org.apache.zookeeper.client.<a href="org/apache/zookeeper/client/FourLetterWordMain.html" title="class in org.apache.zookeeper.client"><span class="typeNameLink">FourLetterWordMain</span></a></li>
+<li type="circle">org.apache.zookeeper.data.<a href="org/apache/zookeeper/data/Id.html" title="class in org.apache.zookeeper.data"><span class="typeNameLink">Id</span></a> (implements org.apache.jute.Record)</li>
+<li type="circle">org.apache.zookeeper.server.<a href="org/apache/zookeeper/server/LogFormatter.html" title="class in org.apache.zookeeper.server"><span class="typeNameLink">LogFormatter</span></a></li>
+<li type="circle">org.apache.zookeeper.server.<a href="org/apache/zookeeper/server/PurgeTxnLog.html" title="class in org.apache.zookeeper.server"><span class="typeNameLink">PurgeTxnLog</span></a></li>
+<li type="circle">org.apache.zookeeper.server.quorum.<a href="org/apache/zookeeper/server/quorum/QuorumPeerMain.html" title="class in org.apache.zookeeper.server.quorum"><span class="typeNameLink">QuorumPeerMain</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/ServerAdminClient.html" title="class in org.apache.zookeeper"><span class="typeNameLink">ServerAdminClient</span></a></li>
+<li type="circle">org.apache.zookeeper.server.<a href="org/apache/zookeeper/server/SnapshotFormatter.html" title="class in org.apache.zookeeper.server"><span class="typeNameLink">SnapshotFormatter</span></a></li>
+<li type="circle">org.apache.zookeeper.data.<a href="org/apache/zookeeper/data/Stat.html" title="class in org.apache.zookeeper.data"><span class="typeNameLink">Stat</span></a> (implements org.apache.jute.Record)</li>
+<li type="circle">org.apache.zookeeper.data.<a href="org/apache/zookeeper/data/StatPersisted.html" title="class in org.apache.zookeeper.data"><span class="typeNameLink">StatPersisted</span></a> (implements org.apache.jute.Record)</li>
+<li type="circle">org.apache.zookeeper.data.<a href="org/apache/zookeeper/data/StatPersistedV1.html" title="class in org.apache.zookeeper.data"><span class="typeNameLink">StatPersistedV1</span></a> (implements org.apache.jute.Record)</li>
+<li type="circle">java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Throwable.html?is-external=true" title="class or interface in java.lang"><span class="typeNameLink">Throwable</span></a> (implements java.io.<a href="http://docs.oracle.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>)
+<ul>
+<li type="circle">java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang"><span class="typeNameLink">Exception</span></a>
+<ul>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException</span></a>
+<ul>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.APIErrorException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.APIErrorException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.AuthFailedException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.AuthFailedException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.BadArgumentsException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.BadArgumentsException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.BadVersionException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.BadVersionException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.ConnectionLossException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.ConnectionLossException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.DataInconsistencyException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.DataInconsistencyException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.InvalidACLException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.InvalidACLException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.InvalidCallbackException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.InvalidCallbackException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.MarshallingErrorException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.MarshallingErrorException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.NoAuthException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.NoAuthException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.NoChildrenForEphemeralsException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.NoChildrenForEphemeralsException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.NodeExistsException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.NodeExistsException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.NoNodeException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.NoNodeException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.NotEmptyException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.NotEmptyException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.NotReadOnlyException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.NotReadOnlyException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.OperationTimeoutException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.OperationTimeoutException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.RuntimeInconsistencyException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.RuntimeInconsistencyException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.SessionExpiredException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.SessionExpiredException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.SessionMovedException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.SessionMovedException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.SystemErrorException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.SystemErrorException</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.UnimplementedException.html" title="class in org.apache.zookeeper"><span class="typeNameLink">KeeperException.UnimplementedException</span></a></li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</li>
+<li type="circle">org.apache.zookeeper.server.upgrade.<a href="org/apache/zookeeper/server/upgrade/UpgradeMain.html" title="class in org.apache.zookeeper.server.upgrade"><span class="typeNameLink">UpgradeMain</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/WatchedEvent.html" title="class in org.apache.zookeeper"><span class="typeNameLink">WatchedEvent</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/ZooDefs.html" title="class in org.apache.zookeeper"><span class="typeNameLink">ZooDefs</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/ZooKeeper.html" title="class in org.apache.zookeeper"><span class="typeNameLink">ZooKeeper</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/ZooKeeperMain.html" title="class in org.apache.zookeeper"><span class="typeNameLink">ZooKeeperMain</span></a></li>
+<li type="circle">org.apache.zookeeper.server.<a href="org/apache/zookeeper/server/ZooKeeperServerMain.html" title="class in org.apache.zookeeper.server"><span class="typeNameLink">ZooKeeperServerMain</span></a></li>
+</ul>
+</li>
+</ul>
+<h2 title="Interface Hierarchy">Interface Hierarchy</h2>
+<ul>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/AsyncCallback.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">AsyncCallback</span></a>
+<ul>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/AsyncCallback.ACLCallback.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">AsyncCallback.ACLCallback</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/AsyncCallback.Children2Callback.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">AsyncCallback.Children2Callback</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/AsyncCallback.ChildrenCallback.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">AsyncCallback.ChildrenCallback</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/AsyncCallback.DataCallback.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">AsyncCallback.DataCallback</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/AsyncCallback.MultiCallback.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">AsyncCallback.MultiCallback</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/AsyncCallback.StatCallback.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">AsyncCallback.StatCallback</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/AsyncCallback.StringCallback.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">AsyncCallback.StringCallback</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/AsyncCallback.VoidCallback.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">AsyncCallback.VoidCallback</span></a></li>
+</ul>
+</li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.CodeDeprecated.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">KeeperException.CodeDeprecated</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/Watcher.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">Watcher</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/Watcher.Event.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">Watcher.Event</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/ZooDefs.Ids.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">ZooDefs.Ids</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/ZooDefs.OpCode.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">ZooDefs.OpCode</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/ZooDefs.Perms.html" title="interface in org.apache.zookeeper"><span class="typeNameLink">ZooDefs.Perms</span></a></li>
+</ul>
+<h2 title="Enum Hierarchy">Enum Hierarchy</h2>
+<ul>
+<li type="circle">java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang"><span class="typeNameLink">Object</span></a>
+<ul>
+<li type="circle">java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Enum.html?is-external=true" title="class or interface in java.lang"><span class="typeNameLink">Enum</span></a>&lt;E&gt; (implements java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Comparable.html?is-external=true" title="class or interface in java.lang">Comparable</a>&lt;T&gt;, java.io.<a href="http://docs.oracle.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>)
+<ul>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/CreateMode.html" title="enum in org.apache.zookeeper"><span class="typeNameLink">CreateMode</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.Code.html" title="enum in org.apache.zookeeper"><span class="typeNameLink">KeeperException.Code</span></a> (implements org.apache.zookeeper.<a href="org/apache/zookeeper/KeeperException.CodeDeprecated.html" title="interface in org.apache.zookeeper">KeeperException.CodeDeprecated</a>)</li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/Watcher.Event.KeeperState.html" title="enum in org.apache.zookeeper"><span class="typeNameLink">Watcher.Event.KeeperState</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/Watcher.Event.EventType.html" title="enum in org.apache.zookeeper"><span class="typeNameLink">Watcher.Event.EventType</span></a></li>
+<li type="circle">org.apache.zookeeper.<a href="org/apache/zookeeper/ZooKeeper.States.html" title="enum in org.apache.zookeeper"><span class="typeNameLink">ZooKeeper.States</span></a></li>
+</ul>
+</li>
+</ul>
+</li>
+</ul>
+</div>
+<!-- ======= START OF BOTTOM NAVBAR ====== -->
+<div class="bottomNav"><a name="navbar.bottom">
+<!--   -->
+</a>
+<div class="skipNav"><a href="#skip.navbar.bottom" title="Skip navigation links">Skip navigation links</a></div>
+<a name="navbar.bottom.firstrow">
+<!--   -->
+</a>
+<ul class="navList" title="Navigation">
+<li><a href="overview-summary.html">Overview</a></li>
+<li>Package</li>
+<li>Class</li>
+<li>Use</li>
+<li class="navBarCell1Rev">Tree</li>
+<li><a href="deprecated-list.html">Deprecated</a></li>
+<li><a href="index-all.html">Index</a></li>
+<li><a href="help-doc.html">Help</a></li>
+</ul>
+</div>
+<div class="subNav">
+<ul class="navList">
+<li>Prev</li>
+<li>Next</li>
+</ul>
+<ul class="navList">
+<li><a href="index.html?overview-tree.html" target="_top">Frames</a></li>
+<li><a href="overview-tree.html" target="_top">No&nbsp;Frames</a></li>
+</ul>
+<ul class="navList" id="allclasses_navbar_bottom">
+<li><a href="allclasses-noframe.html">All&nbsp;Classes</a></li>
+</ul>
+<div>
+<script type="text/javascript"><!--
+  allClassesLink = document.getElementById("allclasses_navbar_bottom");
+  if(window==top) {
+    allClassesLink.style.display = "block";
+  }
+  else {
+    allClassesLink.style.display = "none";
+  }
+  //-->
+</script>
+</div>
+<a name="skip.navbar.bottom">
+<!--   -->
+</a></div>
+<!-- ======== END OF BOTTOM NAVBAR ======= -->
+<p class="legalCopy"><small>Copyright &copy; 2015 The Apache Software Foundation</small></p>
+</body>
+</html>

Added: websites/staging/zookeeper/trunk/content/doc/r3.4.7/api/package-list
==============================================================================
--- websites/staging/zookeeper/trunk/content/doc/r3.4.7/api/package-list (added)
+++ websites/staging/zookeeper/trunk/content/doc/r3.4.7/api/package-list Thu Dec  3 04:30:43 2015
@@ -0,0 +1,6 @@
+org.apache.zookeeper
+org.apache.zookeeper.client
+org.apache.zookeeper.data
+org.apache.zookeeper.server
+org.apache.zookeeper.server.quorum
+org.apache.zookeeper.server.upgrade

Added: websites/staging/zookeeper/trunk/content/doc/r3.4.7/api/script.js
==============================================================================
--- websites/staging/zookeeper/trunk/content/doc/r3.4.7/api/script.js (added)
+++ websites/staging/zookeeper/trunk/content/doc/r3.4.7/api/script.js Thu Dec  3 04:30:43 2015
@@ -0,0 +1,30 @@
+function show(type)
+{
+    count = 0;
+    for (var key in methods) {
+        var row = document.getElementById(key);
+        if ((methods[key] &  type) != 0) {
+            row.style.display = '';
+            row.className = (count++ % 2) ? rowColor : altColor;
+        }
+        else
+            row.style.display = 'none';
+    }
+    updateTabs(type);
+}
+
+function updateTabs(type)
+{
+    for (var value in tabs) {
+        var sNode = document.getElementById(tabs[value][0]);
+        var spanNode = sNode.firstChild;
+        if (value == type) {
+            sNode.className = activeTableTab;
+            spanNode.innerHTML = tabs[value][1];
+        }
+        else {
+            sNode.className = tableTab;
+            spanNode.innerHTML = "<a href=\"javascript:show("+ value + ");\">" + tabs[value][1] + "</a>";
+        }
+    }
+}

Added: websites/staging/zookeeper/trunk/content/doc/r3.4.7/api/serialized-form.html
==============================================================================
--- websites/staging/zookeeper/trunk/content/doc/r3.4.7/api/serialized-form.html (added)
+++ websites/staging/zookeeper/trunk/content/doc/r3.4.7/api/serialized-form.html Thu Dec  3 04:30:43 2015
@@ -0,0 +1,334 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<!-- NewPage -->
+<html lang="en">
+<head>
+<!-- Generated by javadoc (1.8.0_65) on Tue Nov 10 22:32:26 PST 2015 -->
+<title>Serialized Form (ZooKeeper 3.4.7 API)</title>
+<meta name="date" content="2015-11-10">
+<link rel="stylesheet" type="text/css" href="stylesheet.css" title="Style">
+<script type="text/javascript" src="script.js"></script>
+</head>
+<body>
+<script type="text/javascript"><!--
+    try {
+        if (location.href.indexOf('is-external=true') == -1) {
+            parent.document.title="Serialized Form (ZooKeeper 3.4.7 API)";
+        }
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+<a name="navbar.top.firstrow">
+<!--   -->
+</a>
+<ul class="navList" title="Navigation">
+<li><a href="overview-summary.html">Overview</a></li>
+<li>Package</li>
+<li>Class</li>
+<li>Use</li>
+<li><a href="overview-tree.html">Tree</a></li>
+<li><a href="deprecated-list.html">Deprecated</a></li>
+<li><a href="index-all.html">Index</a></li>
+<li><a href="help-doc.html">Help</a></li>
+</ul>
+</div>
+<div class="subNav">
+<ul class="navList">
+<li>Prev</li>
+<li>Next</li>
+</ul>
+<ul class="navList">
+<li><a href="index.html?serialized-form.html" target="_top">Frames</a></li>
+<li><a href="serialized-form.html" target="_top">No&nbsp;Frames</a></li>
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+<li>Use</li>
+<li><a href="overview-tree.html">Tree</a></li>
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+<li><a href="index.html?serialized-form.html" target="_top">Frames</a></li>
+<li><a href="serialized-form.html" target="_top">No&nbsp;Frames</a></li>
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+++ websites/staging/zookeeper/trunk/content/doc/r3.4.7/bookkeeperConfig.html Thu Dec  3 04:30:43 2015
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+<script type="text/javascript">ndeSetTextSize();</script>
+<div id="top">
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+    +-->
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+<a class="selected" href="index.html">ZooKeeper 3.4 Documentation</a>
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+</ul>
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+</div>
+<div class="menuitem">
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+</div>
+<div class="menuitem">
+<a href="zookeeperStarted.html">Getting Started</a>
+</div>
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+<a href="releasenotes.html">Release Notes</a>
+</div>
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+</div>
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+</div>
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+<a href="javaExample.html">Java Example</a>
+</div>
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+</div>
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+<a href="recipes.html">Recipes</a>
+</div>
+</div>
+<div onclick="SwitchMenu('menu_selected_1.3', 'skin/')" id="menu_selected_1.3Title" class="menutitle" style="background-image: url('skin/images/chapter_open.gif');">BookKeeper</div>
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+</div>
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+<div class="menupagetitle">Setup guide</div>
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+<a class="dida" href="bookkeeperConfig.pdf"><img alt="PDF -icon" src="skin/images/pdfdoc.gif" class="skin"><br>
+        PDF</a>
+</div>
+<h1>BookKeeper Administrator's Guide</h1>
+<h3>Setup Guide</h3>
+<div id="front-matter">
+<div id="minitoc-area">
+<ul class="minitoc">
+<li>
+<a href="#bk_deployment">Deployment</a>
+<ul class="minitoc">
+<li>
+<a href="#bk_sysReq">System requirements</a>
+</li>
+<li>
+<a href="#bk_runningBookies">Running bookies</a>
+</li>
+<li>
+<a href="#bk_zkMetadata">ZooKeeper Metadata</a>
+</li>
+</ul>
+</li>
+</ul>
+</div>
+</div>
+  
+
+  
+
+  
+
+  
+<a name="bk_deployment"></a>
+<h2 class="h3">Deployment</h2>
+<div class="section">
+<p>This section contains information about deploying BookKeeper and
+    covers these topics:</p>
+<ul>
+      
+<li>
+        
+<p>
+<a href="#bk_sysReq">System requirements</a>
+</p>
+      
+</li>
+
+      
+<li>
+        
+<p>
+<a href="#bk_runningBookies">Running bookies</a>
+</p>
+      
+</li>
+
+      
+<li>
+        
+<p>
+<a href="#bk_zkMetadata">ZooKeeper Metadata</a>
+</p>
+      
+</li>
+    
+</ul>
+<p> The first section tells you how many machines you need. The second explains how to bootstrap bookies
+     (BookKeeper storage servers). The third section explains how we use ZooKeeper and our requirements with
+     respect to ZooKeeper.
+    </p>
+<a name="bk_sysReq"></a>
+<h3 class="h4">System requirements</h3>
+<p> A typical BookKeeper installation comprises a set of bookies and a set of ZooKeeper replicas. The exact number of bookies
+ 	   depends on the quorum mode, desired throughput, and number of clients using this installation simultaneously. The minimum number of
+ 	   bookies is three for self-verifying (stores a message authentication code along with each entry) and four for generic (does not
+ 	   store a message authentication codewith each entry), and there is no upper limit on the number of bookies. Increasing the number of 
+ 	   bookies, in fact, enables higher throughput.
+ 	   </p>
+<p> For performance, we require each server to have at least two disks. It is possible to run a bookie with a single disk, but 
+ 	   performance will be significantly lower in this case. Of course, it works with one disk, but performance is significantly lower. 
+ 	   </p>
+<p> For ZooKeeper, there is no constraint with respect to the number of replicas. Having a single machine running ZooKeeper
+ 	   in standalone mode is sufficient for BookKeeper. For resilience purposes, it might be a good idea to run ZooKeeper in quorum 
+ 	   mode with multiple servers. Please refer to the ZooKeeper documentation for detail on how to configure ZooKeeper with multiple
+ 	   replicas
+ 	   </p>
+<a name="bk_runningBookies"></a>
+<h3 class="h4">Running bookies</h3>
+<p>
+ 	   To run a bookie, we execute the following command:
+ 	   </p>
+<p>
+<span class="codefrag computeroutput">
+		java -cp .:./zookeeper-&lt;version&gt;-bookkeeper.jar:./zookeeper-&lt;version&gt;.jar\
+		:../log4j/apache-log4j-1.2.15/log4j-1.2.15.jar -Dlog4j.configuration=log4j.properties\ 
+		org.apache.bookkeeper.proto.BookieServer 3181 127.0.0.1:2181 /path_to_log_device/\
+		/path_to_ledger_device/
+	   </span>
+</p>
+<p>
+ 	   The parameters are:
+ 	   </p>
+<ul>
+ 	   	
+<li>
+ 	   	
+<p>
+ 	   		Port number that the bookie listens on;
+ 	   	</p>
+ 	   	
+</li>
+ 	   	
+ 	   	
+<li>
+ 	   	
+<p>
+ 	   		Comma separated list of ZooKeeper servers with a hostname:port format;
+ 	   	</p>
+ 	   	
+</li>
+ 	   	
+ 	   	
+<li>
+ 	   	
+<p>
+ 	   		Path for Log Device (stores bookie write-ahead log);
+ 	   	</p>
+ 	   	
+</li>
+ 	   	
+ 	   	
+<li>
+ 	   	
+<p>
+ 	   		Path for Ledger Device (stores ledger entries);
+ 	   	</p>
+ 	   	
+</li>
+ 	   
+</ul>
+<p>
+ 	   Ideally, <span class="codefrag computeroutput">/path_to_log_device/ </span> and <span class="codefrag computeroutput">/path_to_ledger_device/ </span> are each
+ 	   in a different device. 
+ 	   </p>
+<a name="bk_zkMetadata"></a>
+<h3 class="h4">ZooKeeper Metadata</h3>
+<p>
+ 	   For BookKeeper, we require a ZooKeeper installation to store metadata, and to pass the list
+ 	   of ZooKeeper servers as parameter to the constructor of the BookKeeper class (<span class="codefrag computeroutput">
+ 	   org.apache.bookkeeper.client,BookKeeper</span>).
+ 	   To setup ZooKeeper, please check the <a href="index.html">
+          ZooKeeper documentation</a>.
+ 	   </p>
+</div>
+
+<p align="right">
+<font size="-2"></font>
+</p>
+</div>
+<!--+
+    |end content
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+        PDF</a>
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+<h1>BookKeeper overview</h1>
+<div id="front-matter">
+<div id="minitoc-area">
+<ul class="minitoc">
+<li>
+<a href="#bk_Overview">BookKeeper overview</a>
+<ul class="minitoc">
+<li>
+<a href="#bk_Intro">BookKeeper introduction</a>
+</li>
+<li>
+<a href="#bk_moreDetail">In slightly more detail...</a>
+</li>
+<li>
+<a href="#bk_basicComponents">Bookkeeper elements and concepts</a>
+</li>
+<li>
+<a href="#bk_initialDesign">Bookkeeper initial design</a>
+</li>
+<li>
+<a href="#bk_metadata">Bookkeeper metadata management</a>
+</li>
+<li>
+<a href="#bk_closingOut">Closing out ledgers</a>
+</li>
+</ul>
+</li>
+</ul>
+</div>
+</div>
+  
+
+  
+  
+<a name="bk_Overview"></a>
+<h2 class="h3">BookKeeper overview</h2>
+<div class="section">
+<a name="bk_Intro"></a>
+<h3 class="h4">BookKeeper introduction</h3>
+<p>
+	BookKeeper is a replicated service to reliably log streams of records. In BookKeeper, 
+	servers are "bookies", log streams are "ledgers", and each unit of a log (aka record) is a 
+	"ledger entry". BookKeeper is designed to be reliable; bookies, the servers that store 
+	ledgers, can crash, corrupt data, discard data, but as long as there are enough bookies 
+	behaving correctly the service as a whole behaves correctly.
+	</p>
+<p>
+    The initial motivation for BookKeeper comes from the namenode of HDFS. Namenodes have to 
+    log operations in a reliable fashion so that recovery is possible in the case of crashes. 
+    We have found the applications for BookKeeper extend far beyond HDFS, however. Essentially, 
+    any application that requires an append storage can replace their implementations with
+    BookKeeper. BookKeeper has the advantage of scaling throughput with the number of servers. 
+    </p>
+<p>
+    At a high level, a bookkeeper client receives entries from a client application and stores it to
+    sets of bookies, and there are a few advantages in having such a service:
+	</p>
+<ul>
+    
+<li>
+    
+<p>
+    	We can use hardware that is optimized for such a service. We currently believe that such a
+      	system has to be optimized only for disk I/O;
+    </p>
+    
+</li>
+    
+    
+<li>
+    
+<p>
+    	We can have a pool of servers implementing such a log system, and shared among a number of servers;
+    </p>
+    
+</li>
+    
+    
+<li>
+    
+<p>
+    	We can have a higher degree of replication with such a pool, which makes sense if the hardware necessary for it is cheaper compared to the one the application uses. 
+	</p>
+	
+</li>
+	
+</ul>
+<a name="bk_moreDetail"></a>
+<h3 class="h4">In slightly more detail...</h3>
+<p> BookKeeper implements highly available logs, and it has been designed with write-ahead logging in mind. Besides high availability
+    due to the replicated nature of the service, it provides high throughput due to striping. As we write entries in a subset of bookies of an
+    ensemble and rotate writes across available quorums, we are able to increase throughput with the number of servers for both reads and writes. 
+    Scalability is a property that is possible to achieve in this case due to the use of quorums. Other replication techniques, such as 
+    state-machine replication, do not enable such a property. 
+    </p>
+<p> An application first creates a ledger before writing to bookies through a local BookKeeper client instance.   
+  	Upon creating a ledger, a BookKeeper client writes metadata about the ledger to ZooKeeper. Each ledger currently 
+  	has a single writer. This writer has to execute a close ledger operation before any other client can read from it. 
+  	If the writer of a ledger does not close a ledger properly because, for example, it has crashed before having the 
+  	opportunity of closing the ledger, then the next client that tries to open a ledger executes a procedure to recover
+  	it. As closing a ledger consists essentially of writing the last entry written to a ledger to ZooKeeper, the recovery
+  	procedure simply finds the last entry written correctly and writes it to ZooKeeper.	
+	</p>
+<p>
+	Note that currently this recovery procedure is executed automatically upon trying to open a ledger and no explicit action is necessary. 
+	Although two clients may try to recover a ledger concurrently, only one will succeed, the first one that is able to create the close znode
+	for the ledger.
+	</p>
+<a name="bk_basicComponents"></a>
+<h3 class="h4">Bookkeeper elements and concepts</h3>
+<p> 
+	BookKeeper uses four basic elements:
+	</p>
+<ul>
+      
+<li>
+      
+<p> 
+		
+<strong>Ledger</strong>: A ledger is a sequence of entries, and each entry is a sequence of bytes. Entries are
+		written sequentially to a ledger and at most once. Consequently, ledgers have an append-only semantics;
+	  </p>
+	  
+</li>
+	
+	  
+<li>
+	  
+<p> 
+		
+<strong>BookKeeper client</strong>: A client runs along with a BookKeeper application, and it enables applications
+		to execute operations on ledgers, such as creating a ledger and writing to it; 
+	  </p>
+	  
+</li> 
+	
+	  
+<li>
+	  
+<p>
+		
+<strong>Bookie</strong>: A bookie is a BookKeeper storage server. Bookies store the content of ledgers. For any given
+		ledger L, we call an <em>ensemble</em> the group of bookies storing the content of L. For performance, we store on
+		each bookie of an ensemble only a fragment of a ledger. That is, we stripe when writing entries to a ledger such that
+		each entry is written to sub-group of bookies of the ensemble.
+	  </p>
+	  
+</li>
+
+	  
+<li>
+	  
+<p> 	
+		
+<strong>Metadata storage service</strong>: BookKeeper requires a metadata storage service to store information related 
+		to ledgers and available bookies. We currently use ZooKeeper for such a task.     
+   	  </p>
+   	  
+</li>
+    
+</ul>
+<a name="bk_initialDesign"></a>
+<h3 class="h4">Bookkeeper initial design</h3>
+<p>
+    A set of bookies implements BookKeeper, and we use a quorum-based protocol to replicate data across the bookies. 
+    There are basically two operations to an existing ledger: read and append. Here is the complete API list 
+    (mode detail <a href="bookkeeperProgrammer.html">
+    	      here</a>):
+	</p>
+<ul>
+	
+<li>
+	
+<p>
+    	Create ledger: creates a new empty ledger; 
+    </p>
+    
+</li>
+    
+    
+<li>
+	
+<p>
+    	Open ledger: opens an existing ledger for reading;
+    </p>
+    
+</li>
+    
+    
+<li>
+	
+<p>
+    	Add entry: adds a record to a ledger either synchronously or asynchronously;
+    </p>
+    
+</li>
+    
+    
+<li>
+	
+<p>
+    Read entries: reads a sequence of entries from a ledger either synchronously or asynchronously 
+	</p>
+    
+</li>
+	
+</ul>
+<p>
+	There is only a single client that can write to a ledger. Once that ledger is closed or the client fails, 
+	no more entries can be added. (We take advantage of this behavior to provide our strong guarantees.) 
+	There will not be gaps in the ledger. Fingers get broken, people get roughed up or end up in prison when
+	books are manipulated, so there is no deleting or changing of entries.
+	</p>
+<table class="ForrestTable" cellspacing="1" cellpadding="4">
+<tr>
+<td>BookKeeper Overview</td>
+</tr>
+<tr>
+<td>
+        
+            <img alt="" src="images/bk-overview.jpg">
+        
+        </td>
+</tr>
+</table>
+<p>
+    A simple use of BooKeeper is to implement a write-ahead transaction log. A server maintains an in-memory data structure
+    (with periodic snapshots for example) and logs changes to that structure before it applies the change. The application 
+    server creates a ledger at startup and store the ledger id and password in a well known place (ZooKeeper maybe). When 
+    it needs to make a change, the server adds an entry with the change information to a ledger and apply the change when 
+    BookKeeper adds the entry successfully. The server can even use asyncAddEntry to queue up many changes for high change
+    throughput. BooKeeper meticulously logs the changes in order and call the completion functions in order.
+	</p>
+<p>
+    When the application server dies, a backup server will come online, get the last snapshot and then it will open the 
+    ledger of the old server and read all the entries from the time the snapshot was taken. (Since it doesn't know the 
+    last entry number it will use MAX_INTEGER). Once all the entries have been processed, it will close the ledger and 
+    start a new one for its use. 
+	</p>
+<p>
+	A client library takes care of communicating with bookies and managing entry numbers. An entry has the following fields:
+	</p>
+<table class="ForrestTable" cellspacing="1" cellpadding="4">
+<caption>Entry fields</caption>
+<title>Entry fields</title>
+	
+	
+<tr>
+  	
+<th>Field</th>
+  	<th>Type</th>
+  	<th>Description</th>
+	
+</tr>
+	
+	
+<tr>
+  	
+<td>Ledger number</td>
+  	<td>long</td>
+  	<td>The id of the ledger of this entry</td>
+	
+</tr>
+	
+<tr>
+  	
+<td>Entry number</td>
+  	<td>long</td>
+  	<td>The id of this entry</td>
+	
+</tr>
+	
+	
+<tr>
+  	
+<td>last confirmed (<em>LC</em>)</td>
+  	<td>long</td>
+  	<td>id of the last recorded entry</td>
+	
+</tr>
+	
+<tr>
+  	
+<td>data</td>
+  	<td>byte[]</td>
+  	<td>the entry data (supplied by application)</td>
+	
+</tr>
+	
+<tr>
+  	
+<td>authentication code</td>
+  	<td>byte[]</td>
+  	<td>Message authentication code that includes all other fields of the entry</td>
+	
+</tr>
+	
+	
+	
+</table>
+<p>
+	The client library generates a ledger entry. None of the fields are modified by the bookies and only the first three 
+	fields are interpreted by the bookies.
+	</p>
+<p>
+	To add to a ledger, the client generates the entry above using the ledger number. The entry number will be one more 
+	than the last entry generated. The <em>LC</em> field contains the last entry that has been successfully recorded by BookKeeper. 
+	If the client writes entries one at a time, <em>LC</em> is the last entry id. But, if the client is using asyncAddEntry, there 
+	may be many entries in flight. An entry is considered recorded when both of the following conditions are met:
+	</p>
+<ul>
+	
+<li>
+    
+<p>
+    	the entry has been accepted by a quorum of bookies
+    </p>
+    
+</li>
+    
+    
+<li>
+    
+<p>
+    	all entries with a lower entry id have been accepted by a quorum of bookies 
+	</p>
+	
+</li>
+    
+</ul>
+<p>
+	
+<em>LC</em> seems mysterious right now, but it is too early to explain how we use it; just smile and move on.
+	</p>
+<p>
+	Once all the other fields have been field in, the client generates an authentication code with all of the previous fields. 
+	The entry is then sent to a quorum of bookies to be recorded. Any failures will result in the entry being sent to a new
+	quorum of bookies.
+	</p>
+<p>
+	To read, the client library initially contacts a bookie and starts requesting entries. If an entry is missing or 
+	invalid (a bad MAC for example), the client will make a request to a different bookie. By using quorum writes, 
+	as long as enough bookies are up we are guaranteed to eventually be able to read an entry.
+	</p>
+<a name="bk_metadata"></a>
+<h3 class="h4">Bookkeeper metadata management</h3>
+<p>
+	There are some meta data that needs to be made available to BookKeeper clients:
+	</p>
+<ul>
+	
+<li>
+	
+<p>
+		The available bookies;
+	</p>
+	
+</li>
+	
+	
+<li>
+	
+<p>
+    	The list of ledgers;
+    </p>
+    
+</li>
+    
+    
+<li>
+	
+<p>
+    	The list of bookies that have been used for a given ledger;
+    </p>
+    
+</li>
+    
+    
+<li>
+	
+<p>
+    	The last entry of a ledger; 
+	</p>
+	
+</li>
+	
+</ul>
+<p>
+	We maintain this information in ZooKeeper. Bookies use ephemeral nodes to indicate their availability. Clients 
+	use znodes to track ledger creation and deletion and also to know the end of the ledger and the bookies that 
+	were used to store the ledger. Bookies also watch the ledger list so that they can cleanup ledgers that get deleted.
+	</p>
+<a name="bk_closingOut"></a>
+<h3 class="h4">Closing out ledgers</h3>
+<p>
+	The process of closing out the ledger and finding the last ledger is difficult due to the durability guarantees of BookKeeper:
+	</p>
+<ul>
+	
+<li>
+	
+<p>
+    	If an entry has been successfully recorded, it must be readable.
+    </p>
+    
+</li>
+    
+    
+<li>
+	
+<p>
+    	If an entry is read once, it must always be available to be read. 
+	</p>
+	
+</li>
+	
+</ul>
+<p>
+	If the ledger was closed gracefully, ZooKeeper will have the last entry and everything will work well. But, if the 
+	BookKeeper client that was writing the ledger dies, there is some recovery that needs to take place.
+	</p>
+<p>
+	The problematic entries are the ones at the end of the ledger. There can be entries in flight when a BookKeeper client 
+	dies. If the entry only gets to one bookie, the entry should not be readable since the entry will disappear if that bookie
+	fails. If the entry is only on one bookie, that doesn't mean that the entry has not been recorded successfully; the other
+	bookies that recorded the entry might have failed.
+	</p>
+<p>
+	The trick to making everything work is to have a correct idea of a last entry. We do it in roughly three steps:
+	</p>
+<ol>
+	
+<li>
+	
+<p>
+		Find the entry with the highest last recorded entry, <em>LC</em>;
+	</p>
+	
+</li>
+	
+	
+<li>
+	
+<p>
+		Find the highest consecutively recorded entry, <em>LR</em>;
+	</p>
+	
+</li>
+	
+	
+<li>
+	
+<p>
+		Make sure that all entries between <em>LC</em> and <em>LR</em> are on a quorum of bookies; 
+	</p>
+	
+</li>
+	
+	
+</ol>
+</div>  
+
+<p align="right">
+<font size="-2"></font>
+</p>
+</div>
+<!--+
+    |end content
+    +-->
+<div class="clearboth">&nbsp;</div>
+</div>
+<div id="footer">
+<!--+
+    |start bottomstrip
+    +-->
+<div class="lastmodified">
+<script type="text/javascript"><!--
+document.write("Last Published: " + document.lastModified);
+//  --></script>
+</div>
+<div class="copyright">
+        Copyright &copy;
+         2008-2013 <a href="http://www.apache.org/licenses/">The Apache Software Foundation.</a>
+</div>
+<!--+
+    |end bottomstrip
+    +-->
+</div>
+</body>
+</html>

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