Author: tylerhobbs
Date: Tue Aug 23 20:58:08 2016
New Revision: 1757435
URL: http://svn.apache.org/viewvc?rev=1757435&view=rev
Log:
Publish latest documentation
Added:
cassandra/site/publish/doc/3.10/
cassandra/site/publish/doc/3.10/architecture/
cassandra/site/publish/doc/3.10/architecture/dynamo.html
cassandra/site/publish/doc/3.10/architecture/guarantees.html
cassandra/site/publish/doc/3.10/architecture/index.html
cassandra/site/publish/doc/3.10/architecture/overview.html
cassandra/site/publish/doc/3.10/architecture/storage_engine.html
cassandra/site/publish/doc/3.10/bugs.html
cassandra/site/publish/doc/3.10/configuration/
cassandra/site/publish/doc/3.10/configuration/cassandra_config_file.html
cassandra/site/publish/doc/3.10/configuration/index.html
cassandra/site/publish/doc/3.10/contactus.html
cassandra/site/publish/doc/3.10/cql/
cassandra/site/publish/doc/3.10/cql/appendices.html
cassandra/site/publish/doc/3.10/cql/changes.html
cassandra/site/publish/doc/3.10/cql/ddl.html
cassandra/site/publish/doc/3.10/cql/definitions.html
cassandra/site/publish/doc/3.10/cql/dml.html
cassandra/site/publish/doc/3.10/cql/functions.html
cassandra/site/publish/doc/3.10/cql/index.html
cassandra/site/publish/doc/3.10/cql/indexes.html
cassandra/site/publish/doc/3.10/cql/json.html
cassandra/site/publish/doc/3.10/cql/mvs.html
cassandra/site/publish/doc/3.10/cql/security.html
cassandra/site/publish/doc/3.10/cql/triggers.html
cassandra/site/publish/doc/3.10/cql/types.html
cassandra/site/publish/doc/3.10/data_modeling/
cassandra/site/publish/doc/3.10/data_modeling/index.html
cassandra/site/publish/doc/3.10/development/
cassandra/site/publish/doc/3.10/development/code_style.html
cassandra/site/publish/doc/3.10/development/how_to_commit.html
cassandra/site/publish/doc/3.10/development/how_to_review.html
cassandra/site/publish/doc/3.10/development/ide.html
cassandra/site/publish/doc/3.10/development/index.html
cassandra/site/publish/doc/3.10/development/patches.html
cassandra/site/publish/doc/3.10/development/testing.html
cassandra/site/publish/doc/3.10/faq/
cassandra/site/publish/doc/3.10/faq/index.html
cassandra/site/publish/doc/3.10/genindex.html
cassandra/site/publish/doc/3.10/getting_started/
cassandra/site/publish/doc/3.10/getting_started/configuring.html
cassandra/site/publish/doc/3.10/getting_started/drivers.html
cassandra/site/publish/doc/3.10/getting_started/index.html
cassandra/site/publish/doc/3.10/getting_started/installing.html
cassandra/site/publish/doc/3.10/getting_started/querying.html
cassandra/site/publish/doc/3.10/index.html
cassandra/site/publish/doc/3.10/objects.inv (with props)
cassandra/site/publish/doc/3.10/operating/
cassandra/site/publish/doc/3.10/operating/backups.html
cassandra/site/publish/doc/3.10/operating/bloom_filters.html
cassandra/site/publish/doc/3.10/operating/bulk_loading.html
cassandra/site/publish/doc/3.10/operating/cdc.html
cassandra/site/publish/doc/3.10/operating/compaction.html
cassandra/site/publish/doc/3.10/operating/compression.html
cassandra/site/publish/doc/3.10/operating/hardware.html
cassandra/site/publish/doc/3.10/operating/hints.html
cassandra/site/publish/doc/3.10/operating/index.html
cassandra/site/publish/doc/3.10/operating/metrics.html
cassandra/site/publish/doc/3.10/operating/read_repair.html
cassandra/site/publish/doc/3.10/operating/repair.html
cassandra/site/publish/doc/3.10/operating/security.html
cassandra/site/publish/doc/3.10/operating/snitch.html
cassandra/site/publish/doc/3.10/operating/topo_changes.html
cassandra/site/publish/doc/3.10/search.html
cassandra/site/publish/doc/3.10/searchindex.js
cassandra/site/publish/doc/3.10/tools/
cassandra/site/publish/doc/3.10/tools/cqlsh.html
cassandra/site/publish/doc/3.10/tools/index.html
cassandra/site/publish/doc/3.10/tools/nodetool.html
cassandra/site/publish/doc/3.10/troubleshooting/
cassandra/site/publish/doc/3.10/troubleshooting/index.html
cassandra/site/publish/doc/latest/development/
cassandra/site/publish/doc/latest/development/code_style.html
cassandra/site/publish/doc/latest/development/how_to_commit.html
cassandra/site/publish/doc/latest/development/how_to_review.html
cassandra/site/publish/doc/latest/development/ide.html
cassandra/site/publish/doc/latest/development/index.html
cassandra/site/publish/doc/latest/development/patches.html
cassandra/site/publish/doc/latest/development/testing.html
Modified:
cassandra/site/publish/doc/latest/architecture/dynamo.html
cassandra/site/publish/doc/latest/architecture/guarantees.html
cassandra/site/publish/doc/latest/architecture/index.html
cassandra/site/publish/doc/latest/architecture/overview.html
cassandra/site/publish/doc/latest/architecture/storage_engine.html
cassandra/site/publish/doc/latest/bugs.html
cassandra/site/publish/doc/latest/configuration/cassandra_config_file.html
cassandra/site/publish/doc/latest/configuration/index.html
cassandra/site/publish/doc/latest/contactus.html
cassandra/site/publish/doc/latest/cql/appendices.html
cassandra/site/publish/doc/latest/cql/changes.html
cassandra/site/publish/doc/latest/cql/ddl.html
cassandra/site/publish/doc/latest/cql/definitions.html
cassandra/site/publish/doc/latest/cql/dml.html
cassandra/site/publish/doc/latest/cql/functions.html
cassandra/site/publish/doc/latest/cql/index.html
cassandra/site/publish/doc/latest/cql/indexes.html
cassandra/site/publish/doc/latest/cql/json.html
cassandra/site/publish/doc/latest/cql/mvs.html
cassandra/site/publish/doc/latest/cql/security.html
cassandra/site/publish/doc/latest/cql/triggers.html
cassandra/site/publish/doc/latest/cql/types.html
cassandra/site/publish/doc/latest/data_modeling/index.html
cassandra/site/publish/doc/latest/faq/index.html
cassandra/site/publish/doc/latest/genindex.html
cassandra/site/publish/doc/latest/getting_started/configuring.html
cassandra/site/publish/doc/latest/getting_started/drivers.html
cassandra/site/publish/doc/latest/getting_started/index.html
cassandra/site/publish/doc/latest/getting_started/installing.html
cassandra/site/publish/doc/latest/getting_started/querying.html
cassandra/site/publish/doc/latest/index.html
cassandra/site/publish/doc/latest/objects.inv
cassandra/site/publish/doc/latest/operating/backups.html
cassandra/site/publish/doc/latest/operating/bloom_filters.html
cassandra/site/publish/doc/latest/operating/bulk_loading.html
cassandra/site/publish/doc/latest/operating/cdc.html
cassandra/site/publish/doc/latest/operating/compaction.html
cassandra/site/publish/doc/latest/operating/compression.html
cassandra/site/publish/doc/latest/operating/hardware.html
cassandra/site/publish/doc/latest/operating/hints.html
cassandra/site/publish/doc/latest/operating/index.html
cassandra/site/publish/doc/latest/operating/metrics.html
cassandra/site/publish/doc/latest/operating/read_repair.html
cassandra/site/publish/doc/latest/operating/repair.html
cassandra/site/publish/doc/latest/operating/security.html
cassandra/site/publish/doc/latest/operating/snitch.html
cassandra/site/publish/doc/latest/operating/topo_changes.html
cassandra/site/publish/doc/latest/search.html
cassandra/site/publish/doc/latest/searchindex.js
cassandra/site/publish/doc/latest/tools/cqlsh.html
cassandra/site/publish/doc/latest/tools/index.html
cassandra/site/publish/doc/latest/tools/nodetool.html
cassandra/site/publish/doc/latest/troubleshooting/index.html
Added: cassandra/site/publish/doc/3.10/architecture/dynamo.html
URL:
http://svn.apache.org/viewvc/cassandra/site/publish/doc/3.10/architecture/dynamo.html?rev=1757435&view=auto
==============================================================================
--- cassandra/site/publish/doc/3.10/architecture/dynamo.html (added)
+++ cassandra/site/publish/doc/3.10/architecture/dynamo.html Tue Aug 23
20:58:08 2016
@@ -0,0 +1,364 @@
+<!DOCTYPE html>
+<html>
+
+
+
+
+<head>
+ <meta charset="utf-8">
+ <meta http-equiv="X-UA-Compatible" content="IE=edge">
+ <meta name="viewport" content="width=device-width, initial-scale=1">
+ <meta name="description" content="The Apache Cassandra database is the right
choice when you need scalability and high availability without compromising
performance. Linear scalability and proven fault-tolerance on commodity
hardware or cloud infrastructure make it the perfect platform for
mission-critical data. Cassandra's support for replicating across multiple
datacenters is best-in-class, providing lower latency for your users and the
peace of mind of knowing that you can survive regional outages.
+">
+ <meta name="keywords" content="cassandra, apache, apache cassandra,
distributed storage, key value store, scalability, bigtable, dynamo" />
+ <meta name="robots" content="index,follow" />
+ <meta name="language" content="en" />
+
+ <title>Documentation</title>
+
+ <link rel="canonical"
href="http://cassandra.apache.org/doc/3.10/architecture/dynamo.html";>
+
+ <link rel="stylesheet"
href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css";
integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7"
crossorigin="anonymous">
+ <link rel="stylesheet" href="./../../../css/style.css">
+
+ <link rel="stylesheet" href="./../../../css/sphinx.css">
+
+
+ <link rel="top" title="Apache Cassandra Documentation v3.10"
href="../index.html"/> <link rel="up" title="Architecture" href="index.html"/>
<link rel="next" title="Storage Engine" href="storage_engine.html"/> <link
rel="prev" title="Overview" href="overview.html"/>
+</head>
+
+ <body>
+ <!-- breadcrumbs -->
+<div class="topnav">
+ <div class="container breadcrumb-container">
+ <ul class="breadcrumb">
+ <li>
+ <div class="dropdown">
+ <img class="asf-logo" src="./../../../img/asf_feather.png" />
+ <a data-toggle="dropdown" href="#">Apache Software Foundation <span
class="caret"></span></a>
+ <ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">
+ <li><a href="http://www.apache.org";>Apache Homepage</a></li>
+ <li><a href="http://www.apache.org/licenses/";>License</a></li>
+ <li><a
href="http://www.apache.org/foundation/sponsorship.html";>Sponsorship</a></li>
+ <li><a
href="http://www.apache.org/foundation/thanks.html";>Thanks</a></li>
+ <li><a href="http://www.apache.org/security/";>Security</a></li>
+ </ul>
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+
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+ <div class="container">
+ <div class="navbar-header">
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+ <span class="sr-only">Toggle navigation</span>
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ </button>
+ <a class="navbar-brand" href="./../../../"><img
src="./../../../img/cassandra_logo.png" alt="Apache Cassandra logo" /></a>
+ </div><!-- /.navbar-header -->
+
+ <div id="cassandra-menu" class="collapse navbar-collapse">
+ <ul class="nav navbar-nav navbar-right">
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+ <li><a href="./../../../download/">Download</a></li>
+ <li><a href="./../../../doc/">Documentation</a></li>
+ <li><a href="./../../../community/">Community</a></li>
+ </ul>
+ </div><!-- /#cassandra-menu -->
+
+
+ </div>
+ </nav><!-- /.navbar -->
+</div><!-- /.topnav -->
+
+ <div class="container-fluid">
+ <div class="row">
+ <div class="col-md-2">
+ <div class="doc-navigation">
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+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ </button>
+ </div>
+ <div class="navbar-collapse collapse sidebar-navbar-collapse">
+ <form id="doc-search-form" class="navbar-form"
action="../search.html" method="get" role="search">
+ <div class="form-group">
+ <input type="text" size="30" class="form-control input-sm"
name="q" placeholder="Search docs">
+ <input type="hidden" name="check_keywords" value="yes" />
+ <input type="hidden" name="area" value="default" />
+ </div>
+ </form>
+
+
+
+ <ul class="current">
+<li class="toctree-l1"><a class="reference internal"
href="../getting_started/index.html">Getting Started</a></li>
+<li class="toctree-l1 current"><a class="reference internal"
href="index.html">Architecture</a><ul class="current">
+<li class="toctree-l2"><a class="reference internal"
href="overview.html">Overview</a></li>
+<li class="toctree-l2 current"><a class="current reference internal"
href="#">Dynamo</a><ul>
+<li class="toctree-l3"><a class="reference internal"
href="#gossip">Gossip</a></li>
+<li class="toctree-l3"><a class="reference internal"
href="#failure-detection">Failure Detection</a></li>
+<li class="toctree-l3"><a class="reference internal"
href="#token-ring-ranges">Token Ring/Ranges</a></li>
+<li class="toctree-l3"><a class="reference internal"
href="#replication">Replication</a></li>
+<li class="toctree-l3"><a class="reference internal"
href="#tunable-consistency">Tunable Consistency</a></li>
+</ul>
+</li>
+<li class="toctree-l2"><a class="reference internal"
href="storage_engine.html">Storage Engine</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="guarantees.html">Guarantees</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal"
href="../data_modeling/index.html">Data Modeling</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../cql/index.html">The Cassandra Query Language (CQL)</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../configuration/index.html">Configuring Cassandra</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../operating/index.html">Operating Cassandra</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../tools/index.html">Cassandra Tools</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../troubleshooting/index.html">Troubleshooting</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../development/index.html">Cassandra Development</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../faq/index.html">Frequently Asked Questions</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../bugs.html">Reporting Bugs and Contributing</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../contactus.html">Contact us</a></li>
+</ul>
+
+
+
+ </div><!--/.nav-collapse -->
+ </div>
+ </div>
+ </div>
+ <div class="col-md-8">
+ <div class="content doc-content">
+ <div class="container">
+
+ <div class="section" id="dynamo">
+<h1>Dynamo<a class="headerlink" href="#dynamo" title="Permalink to this
headline">¶</a></h1>
+<div class="section" id="gossip">
+<span id="id1"></span><h2>Gossip<a class="headerlink" href="#gossip"
title="Permalink to this headline">¶</a></h2>
+<div class="admonition-todo admonition" id="index-0">
+<p class="first admonition-title">Todo</p>
+<p class="last">todo</p>
+</div>
+</div>
+<div class="section" id="failure-detection">
+<h2>Failure Detection<a class="headerlink" href="#failure-detection"
title="Permalink to this headline">¶</a></h2>
+<div class="admonition-todo admonition" id="index-1">
+<p class="first admonition-title">Todo</p>
+<p class="last">todo</p>
+</div>
+</div>
+<div class="section" id="token-ring-ranges">
+<h2>Token Ring/Ranges<a class="headerlink" href="#token-ring-ranges"
title="Permalink to this headline">¶</a></h2>
+<div class="admonition-todo admonition" id="index-2">
+<p class="first admonition-title">Todo</p>
+<p class="last">todo</p>
+</div>
+</div>
+<div class="section" id="replication">
+<span id="replication-strategy"></span><h2>Replication<a class="headerlink"
href="#replication" title="Permalink to this headline">¶</a></h2>
+<p>The replication strategy of a keyspace determines which nodes are replicas
for a given token range. The two main
+replication strategies are <a class="reference internal"
href="#simple-strategy"><span class="std std-ref">SimpleStrategy</span></a> and
<a class="reference internal" href="#network-topology-strategy"><span
class="std std-ref">NetworkTopologyStrategy</span></a>.</p>
+<div class="section" id="simplestrategy">
+<span id="simple-strategy"></span><h3>SimpleStrategy<a class="headerlink"
href="#simplestrategy" title="Permalink to this headline">¶</a></h3>
+<p>SimpleStrategy allows a single integer <code class="docutils literal"><span
class="pre">replication_factor</span></code> to be defined. This determines the
number of nodes that
+should contain a copy of each row. For example, if <code class="docutils
literal"><span class="pre">replication_factor</span></code> is 3, then three
different nodes should store
+a copy of each row.</p>
+<p>SimpleStrategy treats all nodes identically, ignoring any configured
datacenters or racks. To determine the replicas
+for a token range, Cassandra iterates through the tokens in the ring, starting
with the token range of interest. For
+each token, it checks whether the owning node has been added to the set of
replicas, and if it has not, it is added to
+the set. This process continues until <code class="docutils literal"><span
class="pre">replication_factor</span></code> distinct nodes have been added to
the set of replicas.</p>
+</div>
+<div class="section" id="networktopologystrategy">
+<span id="network-topology-strategy"></span><h3>NetworkTopologyStrategy<a
class="headerlink" href="#networktopologystrategy" title="Permalink to this
headline">¶</a></h3>
+<p>NetworkTopologyStrategy allows a replication factor to be specified for
each datacenter in the cluster. Even if your
+cluster only uses a single datacenter, NetworkTopologyStrategy should be
prefered over SimpleStrategy to make it easier
+to add new physical or virtual datacenters to the cluster later.</p>
+<p>In addition to allowing the replication factor to be specified per-DC,
NetworkTopologyStrategy also attempts to choose
+replicas within a datacenter from different racks. If the number of racks is
greater than or equal to the replication
+factor for the DC, each replica will be chosen from a different rack.
Otherwise, each rack will hold at least one
+replica, but some racks may hold more than one. Note that this rack-aware
behavior has some potentially <a class="reference external"
href="https://issues.apache.org/jira/browse/CASSANDRA-3810";>surprising
+implications</a>. For example, if there are not an even number of
+nodes in each rack, the data load on the smallest rack may be much higher.
Similarly, if a single node is bootstrapped
+into a new rack, it will be considered a replica for the entire ring. For
this reason, many operators choose to
+configure all nodes on a single “rack”.</p>
+</div>
+</div>
+<div class="section" id="tunable-consistency">
+<h2>Tunable Consistency<a class="headerlink" href="#tunable-consistency"
title="Permalink to this headline">¶</a></h2>
+<p>Cassandra supports a per-operation tradeoff between consistency and
availability through <em>Consistency Levels</em>.
+Essentially, an operation’s consistency level specifies how many of the
replicas need to respond to the coordinator in
+order to consider the operation a success.</p>
+<p>The following consistency levels are available:</p>
+<dl class="docutils">
+<dt><code class="docutils literal"><span class="pre">ONE</span></code></dt>
+<dd>Only a single replica must respond.</dd>
+<dt><code class="docutils literal"><span class="pre">TWO</span></code></dt>
+<dd>Two replicas must respond.</dd>
+<dt><code class="docutils literal"><span class="pre">THREE</span></code></dt>
+<dd>Three replicas must respond.</dd>
+<dt><code class="docutils literal"><span class="pre">QUORUM</span></code></dt>
+<dd>A majority (n/2 + 1) of the replicas must respond.</dd>
+<dt><code class="docutils literal"><span class="pre">ALL</span></code></dt>
+<dd>All of the replicas must respond.</dd>
+<dt><code class="docutils literal"><span
class="pre">LOCAL_QUORUM</span></code></dt>
+<dd>A majority of the replicas in the local datacenter (whichever datacenter
the coordinator is in) must respond.</dd>
+<dt><code class="docutils literal"><span
class="pre">EACH_QUORUM</span></code></dt>
+<dd>A majority of the replicas in each datacenter must respond.</dd>
+<dt><code class="docutils literal"><span
class="pre">LOCAL_ONE</span></code></dt>
+<dd>Only a single replica must respond. In a multi-datacenter cluster, this
also gaurantees that read requests are not
+sent to replicas in a remote datacenter.</dd>
+<dt><code class="docutils literal"><span class="pre">ANY</span></code></dt>
+<dd>A single replica may respond, or the coordinator may store a hint. If a
hint is stored, the coordinator will later
+attempt to replay the hint and deliver the mutation to the replicas. This
consistency level is only accepted for
+write operations.</dd>
+</dl>
+<p>Write operations are always sent to all replicas, regardless of consistency
level. The consistency level simply
+controls how many responses the coordinator waits for before responding to the
client.</p>
+<p>For read operations, the coordinator generally only issues read commands to
enough replicas to satisfy the consistency
+level. There are a couple of exceptions to this:</p>
+<ul class="simple">
+<li>Speculative retry may issue a redundant read request to an extra replica
if the other replicas have not responded
+within a specified time window.</li>
+<li>Based on <code class="docutils literal"><span
class="pre">read_repair_chance</span></code> and <code class="docutils
literal"><span class="pre">dclocal_read_repair_chance</span></code> (part of a
table’s schema), read requests may be
+randomly sent to all replicas in order to repair potentially inconsistent
data.</li>
+</ul>
+<div class="section" id="picking-consistency-levels">
+<h3>Picking Consistency Levels<a class="headerlink"
href="#picking-consistency-levels" title="Permalink to this
headline">¶</a></h3>
+<p>It is common to pick read and write consistency levels that are high enough
to overlap, resulting in “strong”
+consistency. This is typically expressed as <code class="docutils
literal"><span class="pre">W</span> <span class="pre">+</span> <span
class="pre">R</span> <span class="pre">></span> <span
class="pre">RF</span></code>, where <code class="docutils literal"><span
class="pre">W</span></code> is the write consistency level, <code
class="docutils literal"><span class="pre">R</span></code> is the
+read consistency level, and <code class="docutils literal"><span
class="pre">RF</span></code> is the replication factor. For example, if <code
class="docutils literal"><span class="pre">RF</span> <span class="pre">=</span>
<span class="pre">3</span></code>, a <code class="docutils literal"><span
class="pre">QUORUM</span></code> request will
+require responses from at least two of the three replicas. If <code
class="docutils literal"><span class="pre">QUORUM</span></code> is used for
both writes and reads, at least
+one of the replicas is guaranteed to participate in <em>both</em> the write
and the read request, which in turn guarantees that
+the latest write will be read. In a multi-datacenter environment, <code
class="docutils literal"><span class="pre">LOCAL_QUORUM</span></code> can be
used to provide a weaker but
+still useful guarantee: reads are guaranteed to see the latest write from
within the same datacenter.</p>
+<p>If this type of strong consistency isn’t required, lower consistency
levels like <code class="docutils literal"><span class="pre">ONE</span></code>
may be used to improve
+throughput, latency, and availability.</p>
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Added: cassandra/site/publish/doc/3.10/architecture/guarantees.html
URL:
http://svn.apache.org/viewvc/cassandra/site/publish/doc/3.10/architecture/guarantees.html?rev=1757435&view=auto
==============================================================================
--- cassandra/site/publish/doc/3.10/architecture/guarantees.html (added)
+++ cassandra/site/publish/doc/3.10/architecture/guarantees.html Tue Aug 23
20:58:08 2016
@@ -0,0 +1,259 @@
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+ <meta http-equiv="X-UA-Compatible" content="IE=edge">
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+ <meta name="description" content="The Apache Cassandra database is the right
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datacenters is best-in-class, providing lower latency for your users and the
peace of mind of knowing that you can survive regional outages.
+">
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+ <link rel="stylesheet" href="./../../../css/style.css">
+
+ <link rel="stylesheet" href="./../../../css/sphinx.css">
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+<li class="toctree-l2 current"><a class="current reference internal"
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+<li class="toctree-l1"><a class="reference internal"
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+<li class="toctree-l1"><a class="reference internal"
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+<li class="toctree-l1"><a class="reference internal"
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+<li class="toctree-l1"><a class="reference internal"
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+<li class="toctree-l1"><a class="reference internal"
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+<li class="toctree-l1"><a class="reference internal"
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+</ul>
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+ <div class="col-md-8">
+ <div class="content doc-content">
+ <div class="container">
+
+ <div class="section" id="guarantees">
+<h1>Guarantees<a class="headerlink" href="#guarantees" title="Permalink to
this headline">¶</a></h1>
+<div class="admonition-todo admonition" id="index-0">
+<p class="first admonition-title">Todo</p>
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Added: cassandra/site/publish/doc/3.10/architecture/index.html
URL:
http://svn.apache.org/viewvc/cassandra/site/publish/doc/3.10/architecture/index.html?rev=1757435&view=auto
==============================================================================
--- cassandra/site/publish/doc/3.10/architecture/index.html (added)
+++ cassandra/site/publish/doc/3.10/architecture/index.html Tue Aug 23 20:58:08
2016
@@ -0,0 +1,274 @@
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+ <meta http-equiv="X-UA-Compatible" content="IE=edge">
+ <meta name="viewport" content="width=device-width, initial-scale=1">
+ <meta name="description" content="The Apache Cassandra database is the right
choice when you need scalability and high availability without compromising
performance. Linear scalability and proven fault-tolerance on commodity
hardware or cloud infrastructure make it the perfect platform for
mission-critical data. Cassandra's support for replicating across multiple
datacenters is best-in-class, providing lower latency for your users and the
peace of mind of knowing that you can survive regional outages.
+">
+ <meta name="keywords" content="cassandra, apache, apache cassandra,
distributed storage, key value store, scalability, bigtable, dynamo" />
+ <meta name="robots" content="index,follow" />
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+
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+ <link rel="stylesheet" href="./../../../css/style.css">
+
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+<li class="toctree-l1"><a class="reference internal"
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+<li class="toctree-l1 current"><a class="current reference internal"
href="#">Architecture</a><ul>
+<li class="toctree-l2"><a class="reference internal"
href="overview.html">Overview</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="dynamo.html">Dynamo</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="storage_engine.html">Storage Engine</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="guarantees.html">Guarantees</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal"
href="../data_modeling/index.html">Data Modeling</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../cql/index.html">The Cassandra Query Language (CQL)</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../configuration/index.html">Configuring Cassandra</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../operating/index.html">Operating Cassandra</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../tools/index.html">Cassandra Tools</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../troubleshooting/index.html">Troubleshooting</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../development/index.html">Cassandra Development</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../faq/index.html">Frequently Asked Questions</a></li>
+<li class="toctree-l1"><a class="reference internal"
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+<li class="toctree-l1"><a class="reference internal"
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+</ul>
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+ </div>
+ </div>
+ </div>
+ <div class="col-md-8">
+ <div class="content doc-content">
+ <div class="container">
+
+ <div class="section" id="architecture">
+<h1>Architecture<a class="headerlink" href="#architecture" title="Permalink to
this headline">¶</a></h1>
+<p>This section describes the general architecture of Apache Cassandra.</p>
+<div class="toctree-wrapper compound">
+<ul>
+<li class="toctree-l1"><a class="reference internal"
href="overview.html">Overview</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="dynamo.html">Dynamo</a><ul>
+<li class="toctree-l2"><a class="reference internal"
href="dynamo.html#gossip">Gossip</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="dynamo.html#failure-detection">Failure Detection</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="dynamo.html#token-ring-ranges">Token Ring/Ranges</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="dynamo.html#replication">Replication</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="dynamo.html#tunable-consistency">Tunable Consistency</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal"
href="storage_engine.html">Storage Engine</a><ul>
+<li class="toctree-l2"><a class="reference internal"
href="storage_engine.html#commitlog">CommitLog</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="storage_engine.html#memtables">Memtables</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="storage_engine.html#sstables">SSTables</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal"
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+</ul>
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+ <a href="https://twitter.com/intent/tweet?button_hashtag=cassandra";
+ class="twitter-hashtag-button"
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+ </span>
+ </div>
+
+ <div class="col-md-8 trademark">
+ <p>© 2016 <a href="http://apache.org";>The Apache Software
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+
+<!-- Javascript. Placed here so pages load faster -->
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+ width: nav.width(),
+ });
+ nav.addClass('fixed-navigation');
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+ else if (!shouldBeFixed && isFixed)
+ {
+ nav.css({
+ position: 'static'
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+</script>
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+</html>
Added: cassandra/site/publish/doc/3.10/architecture/overview.html
URL:
http://svn.apache.org/viewvc/cassandra/site/publish/doc/3.10/architecture/overview.html?rev=1757435&view=auto
==============================================================================
--- cassandra/site/publish/doc/3.10/architecture/overview.html (added)
+++ cassandra/site/publish/doc/3.10/architecture/overview.html Tue Aug 23
20:58:08 2016
@@ -0,0 +1,259 @@
+<!DOCTYPE html>
+<html>
+
+
+
+
+<head>
+ <meta charset="utf-8">
+ <meta http-equiv="X-UA-Compatible" content="IE=edge">
+ <meta name="viewport" content="width=device-width, initial-scale=1">
+ <meta name="description" content="The Apache Cassandra database is the right
choice when you need scalability and high availability without compromising
performance. Linear scalability and proven fault-tolerance on commodity
hardware or cloud infrastructure make it the perfect platform for
mission-critical data. Cassandra's support for replicating across multiple
datacenters is best-in-class, providing lower latency for your users and the
peace of mind of knowing that you can survive regional outages.
+">
+ <meta name="keywords" content="cassandra, apache, apache cassandra,
distributed storage, key value store, scalability, bigtable, dynamo" />
+ <meta name="robots" content="index,follow" />
+ <meta name="language" content="en" />
+
+ <title>Documentation</title>
+
+ <link rel="canonical"
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+
+ <link rel="stylesheet"
href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css";
integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7"
crossorigin="anonymous">
+ <link rel="stylesheet" href="./../../../css/style.css">
+
+ <link rel="stylesheet" href="./../../../css/sphinx.css">
+
+
+ <link rel="top" title="Apache Cassandra Documentation v3.10"
href="../index.html"/> <link rel="up" title="Architecture" href="index.html"/>
<link rel="next" title="Dynamo" href="dynamo.html"/> <link rel="prev"
title="Architecture" href="index.html"/>
+</head>
+
+ <body>
+ <!-- breadcrumbs -->
+<div class="topnav">
+ <div class="container breadcrumb-container">
+ <ul class="breadcrumb">
+ <li>
+ <div class="dropdown">
+ <img class="asf-logo" src="./../../../img/asf_feather.png" />
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+ <ul class="dropdown-menu" role="menu" aria-labelledby="dLabel">
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+ <li><a
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+ <li><a href="http://www.apache.org/security/";>Security</a></li>
+ </ul>
+ </div>
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+ <li><a href="./../../../doc">Documentation</a></li>
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+ <div class="container">
+ <div class="navbar-header">
+ <button type="button" class="navbar-toggle collapsed"
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+ <span class="sr-only">Toggle navigation</span>
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ <span class="icon-bar"></span>
+ </button>
+ <a class="navbar-brand" href="./../../../"><img
src="./../../../img/cassandra_logo.png" alt="Apache Cassandra logo" /></a>
+ </div><!-- /.navbar-header -->
+
+ <div id="cassandra-menu" class="collapse navbar-collapse">
+ <ul class="nav navbar-nav navbar-right">
+ <li><a href="./../../../">Home</a></li>
+ <li><a href="./../../../download/">Download</a></li>
+ <li><a href="./../../../doc/">Documentation</a></li>
+ <li><a href="./../../../community/">Community</a></li>
+ </ul>
+ </div><!-- /#cassandra-menu -->
+
+
+ </div>
+ </nav><!-- /.navbar -->
+</div><!-- /.topnav -->
+
+ <div class="container-fluid">
+ <div class="row">
+ <div class="col-md-2">
+ <div class="doc-navigation">
+ <div class="doc-menu" role="navigation">
+ <div class="navbar-header">
+ <button type="button" class="pull-left navbar-toggle"
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+ <span class="icon-bar"></span>
+ </button>
+ </div>
+ <div class="navbar-collapse collapse sidebar-navbar-collapse">
+ <form id="doc-search-form" class="navbar-form"
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+ <input type="hidden" name="check_keywords" value="yes" />
+ <input type="hidden" name="area" value="default" />
+ </div>
+ </form>
+
+
+
+ <ul class="current">
+<li class="toctree-l1"><a class="reference internal"
href="../getting_started/index.html">Getting Started</a></li>
+<li class="toctree-l1 current"><a class="reference internal"
href="index.html">Architecture</a><ul class="current">
+<li class="toctree-l2 current"><a class="current reference internal"
href="#">Overview</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="dynamo.html">Dynamo</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="storage_engine.html">Storage Engine</a></li>
+<li class="toctree-l2"><a class="reference internal"
href="guarantees.html">Guarantees</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal"
href="../data_modeling/index.html">Data Modeling</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../cql/index.html">The Cassandra Query Language (CQL)</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../configuration/index.html">Configuring Cassandra</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../operating/index.html">Operating Cassandra</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../tools/index.html">Cassandra Tools</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../troubleshooting/index.html">Troubleshooting</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../development/index.html">Cassandra Development</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../faq/index.html">Frequently Asked Questions</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../bugs.html">Reporting Bugs and Contributing</a></li>
+<li class="toctree-l1"><a class="reference internal"
href="../contactus.html">Contact us</a></li>
+</ul>
+
+
+
+ </div><!--/.nav-collapse -->
+ </div>
+ </div>
+ </div>
+ <div class="col-md-8">
+ <div class="content doc-content">
+ <div class="container">
+
+ <div class="section" id="overview">
+<h1>Overview<a class="headerlink" href="#overview" title="Permalink to this
headline">¶</a></h1>
+<div class="admonition-todo admonition" id="index-0">
+<p class="first admonition-title">Todo</p>
+<p class="last">todo</p>
+</div>
+</div>
+
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+
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+ <a href="https://twitter.com/intent/tweet?button_hashtag=cassandra";
+ class="twitter-hashtag-button"
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+ </span>
+ </div>
+
+ <div class="col-md-8 trademark">
+ <p>© 2016 <a href="http://apache.org";>The Apache Software
Foundation</a>.
+ Apache, the Apache feather logo, and Apache Cassandra are trademarks of
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+ <p>
+ </div>
+ </div><!-- /.container -->
+</footer>
+
+<!-- Javascript. Placed here so pages load faster -->
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+
+
+<script src="./../../../js/doctools.js"></script>
+<script src="./../../../js/searchtools.js"></script>
+
+ <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT:
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+
+<script type="text/javascript">
+$(function() {
+ // Stick the #nav to the top of the window
+ var nav = $('.doc-navigation');
+ var navHomeY = nav.offset().top;
+ var isFixed = false;
+ var $w = $(window);
+ $w.scroll(function() {
+ var scrollTop = $w.scrollTop();
+ var shouldBeFixed = $w.width() > 991 && scrollTop >= navHomeY - 10;
+ if (shouldBeFixed && !isFixed) {
+ nav.css({
+ position: 'fixed',
+ top: 0,
+ left: nav.offset().left,
+ width: nav.width(),
+ });
+ nav.addClass('fixed-navigation');
+ isFixed = true;
+ }
+ else if (!shouldBeFixed && isFixed)
+ {
+ nav.css({
+ position: 'static'
+ });
+ nav.removeClass('fixed-navigation');
+ isFixed = false;
+ }
+ });
+});
+</script>
+
+
+<script type="text/javascript">
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+ document.write(unescape("%3Cscript src='" + gaJsHost +
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+ } catch(err) {}
+</script>
+
+
+ </body>
+</html>
Added: cassandra/site/publish/doc/3.10/architecture/storage_engine.html
URL:
http://svn.apache.org/viewvc/cassandra/site/publish/doc/3.10/architecture/storage_engine.html?rev=1757435&view=auto
==============================================================================
--- cassandra/site/publish/doc/3.10/architecture/storage_engine.html (added)
+++ cassandra/site/publish/doc/3.10/architecture/storage_engine.html Tue Aug 23
20:58:08 2016
@@ -0,0 +1,310 @@
+<!DOCTYPE html>
+<html>
+
+
+
+
+<head>
+ <meta charset="utf-8">
+ <meta http-equiv="X-UA-Compatible" content="IE=edge">
+ <meta name="viewport" content="width=device-width, initial-scale=1">
+ <meta name="description" content="The Apache Cassandra database is the right
choice when you need scalability and high availability without compromising
performance. Linear scalability and proven fault-tolerance on commodity
hardware or cloud infrastructure make it the perfect platform for
mission-critical data. Cassandra's support for replicating across multiple
datacenters is best-in-class, providing lower latency for your users and the
peace of mind of knowing that you can survive regional outages.
+">
+ <meta name="keywords" content="cassandra, apache, apache cassandra,
distributed storage, key value store, scalability, bigtable, dynamo" />
+ <meta name="robots" content="index,follow" />
+ <meta name="language" content="en" />
+
+ <title>Documentation</title>
+
+ <link rel="canonical"
href="http://cassandra.apache.org/doc/3.10/architecture/storage_engine.html";>
+
+ <link rel="stylesheet"
href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css";
integrity="sha384-1q8mTJOASx8j1Au+a5WDVnPi2lkFfwwEAa8hDDdjZlpLegxhjVME1fgjWPGmkzs7"
crossorigin="anonymous">
+ <link rel="stylesheet" href="./../../../css/style.css">
+
+ <link rel="stylesheet" href="./../../../css/sphinx.css">
+
+
+ <link rel="top" title="Apache Cassandra Documentation v3.10"
href="../index.html"/> <link rel="up" title="Architecture" href="index.html"/>
<link rel="next" title="Guarantees" href="guarantees.html"/> <link rel="prev"
title="Dynamo" href="dynamo.html"/>
+</head>
+
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+ <!-- breadcrumbs -->
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+ <li><a
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+ <li><a href="http://www.apache.org/security/";>Security</a></li>
+ </ul>
+ </div>
+ </li>
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+
+ <div class="section" id="storage-engine">
+<h1>Storage Engine<a class="headerlink" href="#storage-engine"
title="Permalink to this headline">¶</a></h1>
+<div class="section" id="commitlog">
+<span id="commit-log"></span><h2>CommitLog<a class="headerlink"
href="#commitlog" title="Permalink to this headline">¶</a></h2>
+<div class="admonition-todo admonition" id="index-0">
+<p class="first admonition-title">Todo</p>
+<p class="last">todo</p>
+</div>
+</div>
+<div class="section" id="memtables">
+<span id="id1"></span><h2>Memtables<a class="headerlink" href="#memtables"
title="Permalink to this headline">¶</a></h2>
+<p>Memtables are in-memory structures where Cassandra buffers writes. In
general, there is one active memtable per table.
+Eventually, memtables are flushed onto disk and become immutable <a
class="reference internal" href="#sstables">SSTables</a>. This can be
triggered in several
+ways:</p>
+<ul class="simple">
+<li>The memory usage of the memtables exceeds the configured threshold (see
<code class="docutils literal"><span
class="pre">memtable_cleanup_threshold</span></code>)</li>
+<li>The <a class="reference internal" href="#commit-log"><span class="std
std-ref">CommitLog</span></a> approaches its maximum size, and forces memtable
flushes in order to allow commitlog segments to
+be freed</li>
+</ul>
+<p>Memtables may be stored entirely on-heap or partially off-heap, depending
on <code class="docutils literal"><span
class="pre">memtable_allocation_type</span></code>.</p>
+</div>
+<div class="section" id="sstables">
+<h2>SSTables<a class="headerlink" href="#sstables" title="Permalink to this
headline">¶</a></h2>
+<p>SSTables are the immutable data files that Cassandra uses for persisting
data on disk.</p>
+<p>As SSTables are flushed to disk from <a class="reference internal"
href="#memtables"><span class="std std-ref">Memtables</span></a> or are
streamed from other nodes, Cassandra triggers compactions
+which combine multiple SSTables into one. Once the new SSTable has been
written, the old SSTables can be removed.</p>
+<p>Each SSTable is comprised of multiple components stored in separate
files:</p>
+<dl class="docutils">
+<dt><code class="docutils literal"><span class="pre">Data.db</span></code></dt>
+<dd>The actual data, i.e. the contents of rows.</dd>
+<dt><code class="docutils literal"><span
class="pre">Index.db</span></code></dt>
+<dd>An index from partition keys to positions in the <code class="docutils
literal"><span class="pre">Data.db</span></code> file. For wide partitions,
this may also include an
+index to rows within a partition.</dd>
+<dt><code class="docutils literal"><span
class="pre">Summary.db</span></code></dt>
+<dd>A sampling of (by default) every 128th entry in the <code class="docutils
literal"><span class="pre">Index.db</span></code> file.</dd>
+<dt><code class="docutils literal"><span
class="pre">Filter.db</span></code></dt>
+<dd>A Bloom Filter of the partition keys in the SSTable.</dd>
+<dt><code class="docutils literal"><span
class="pre">CompressionInfo.db</span></code></dt>
+<dd>Metadata about the offsets and lengths of compression chunks in the <code
class="docutils literal"><span class="pre">Data.db</span></code> file.</dd>
+<dt><code class="docutils literal"><span
class="pre">Statistics.db</span></code></dt>
+<dd>Stores metadata about the SSTable, including information about timestamps,
tombstones, clustering keys, compaction,
+repair, compression, TTLs, and more.</dd>
+<dt><code class="docutils literal"><span
class="pre">Digest.crc32</span></code></dt>
+<dd>A CRC-32 digest of the <code class="docutils literal"><span
class="pre">Data.db</span></code> file.</dd>
+<dt><code class="docutils literal"><span class="pre">TOC.txt</span></code></dt>
+<dd>A plain text list of the component files for the SSTable.</dd>
+</dl>
+<p>Within the <code class="docutils literal"><span
class="pre">Data.db</span></code> file, rows are organized by partition. These
partitions are sorted in token order (i.e. by a
+hash of the partition key when the default partitioner, <code class="docutils
literal"><span class="pre">Murmur3Partition</span></code>, is used). Within a
partition, rows are
+stored in the order of their clustering keys.</p>
+<p>SSTables can be optionally compressed using block-based compression.</p>
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