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Posted to commits@qpid.apache.org by or...@apache.org on 2015/12/09 18:42:03 UTC
svn commit: r1718924 [13/39] - in /qpid/site: docs/
docs/components/java-broker/ docs/components/jms/ docs/components/qpid-jca/
docs/releases/ docs/releases/qpid-java-6.0.0/
docs/releases/qpid-java-6.0.0/java-broker/
docs/releases/qpid-java-6.0.0/java-...
Added: qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Miscellaneous.html
URL: http://svn.apache.org/viewvc/qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Miscellaneous.html?rev=1718924&view=auto
==============================================================================
--- qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Miscellaneous.html (added)
+++ qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Miscellaneous.html Wed Dec 9 17:41:59 2015
@@ -0,0 +1,152 @@
+<!DOCTYPE html>
+<!--
+ -
+ - Licensed to the Apache Software Foundation (ASF) under one
+ - or more contributor license agreements. See the NOTICE file
+ - distributed with this work for additional information
+ - regarding copyright ownership. The ASF licenses this file
+ - to you under the Apache License, Version 2.0 (the
+ - "License"); you may not use this file except in compliance
+ - with the License. You may obtain a copy of the License at
+ -
+ - http://www.apache.org/licenses/LICENSE-2.0
+ -
+ - Unless required by applicable law or agreed to in writing,
+ - 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.
+ -
+-->
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
+ <head>
+ <title>Appendix E. Miscellaneous - Apache Qpid™</title>
+ <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
+ <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+ <link rel="stylesheet" href="/site.css" type="text/css" async="async"/>
+ <link rel="stylesheet" href="/deferred.css" type="text/css" defer="defer"/>
+ <script type="text/javascript">var _deferredFunctions = [];</script>
+ <script type="text/javascript" src="/deferred.js" defer="defer"></script>
+ <!--[if lte IE 8]>
+ <link rel="stylesheet" href="/ie.css" type="text/css"/>
+ <script type="text/javascript" src="/html5shiv.js"></script>
+ <![endif]-->
+
+ <!-- Redirects for `go get` and godoc.org -->
+ <meta name="go-import"
+ content="qpid.apache.org git https://github.com/alanconway/proton-go.git"/>
+ <meta name="go-source"
+ content="qpid.apache.org
+https://github.com/alanconway/proton-go/tree/master/README.md
+https://github.com/alanconway/proton-go/tree/master{/dir}
+https://github.com/alanconway/proton-go/blob/master{/dir}/{file}#L{line}"/>
+ </head>
+ <body>
+ <div id="-content">
+ <div id="-top" class="panel">
+ <a id="-menu-link"><img width="16" height="16" src="" alt="Menu"/></a>
+
+ <a id="-search-link"><img width="22" height="16" src="" alt="Search"/></a>
+
+ <ul id="-global-navigation">
+ <li><a id="-logotype" href="/index.html">Apache Qpid<sup>™</sup></a></li>
+ <li><a href="/documentation.html">Documentation</a></li>
+ <li><a href="/download.html">Download</a></li>
+ <li><a href="/discussion.html">Discussion</a></li>
+ </ul>
+ </div>
+
+ <div id="-menu" class="panel" style="display: none;">
+ <div class="flex">
+ <section>
+ <h3>Project</h3>
+
+ <ul>
+ <li><a href="/overview.html">Overview</a></li>
+ <li><a href="/components/index.html">Components</a></li>
+ <li><a href="/releases/index.html">Releases</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Messaging APIs</h3>
+
+ <ul>
+ <li><a href="/proton/index.html">Qpid Proton</a></li>
+ <li><a href="/components/jms/index.html">Qpid JMS</a></li>
+ <li><a href="/components/messaging-api/index.html">Qpid Messaging API</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Servers and tools</h3>
+
+ <ul>
+ <li><a href="/components/java-broker/index.html">Java broker</a></li>
+ <li><a href="/components/cpp-broker/index.html">C++ broker</a></li>
+ <li><a href="/components/dispatch-router/index.html">Dispatch router</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Resources</h3>
+
+ <ul>
+ <li><a href="/dashboard.html">Dashboard</a></li>
+ <li><a href="https://cwiki.apache.org/confluence/display/qpid/Index">Wiki</a></li>
+ <li><a href="/resources.html">More resources</a></li>
+ </ul>
+ </section>
+ </div>
+ </div>
+
+ <div id="-search" class="panel" style="display: none;">
+ <form action="http://www.google.com/search" method="get">
+ <input type="hidden" name="sitesearch" value="qpid.apache.org"/>
+ <input type="text" name="q" maxlength="255" autofocus="autofocus" tabindex="1"/>
+ <button type="submit">Search</button>
+ <a href="/search.html">More ways to search</a>
+ </form>
+ </div>
+
+ <div id="-middle" class="panel">
+ <ul id="-path-navigation"><li><a href="/index.html">Home</a></li><li><a href="/releases/index.html">Releases</a></li><li><a href="/releases/qpid-java-6.0.0/index.html">Qpid Java 6.0.0</a></li><li><a href="/releases/qpid-java-6.0.0/java-broker/book/index.html">AMQP Messaging Broker (Java)</a></li><li>Appendix E. Miscellaneous</li></ul>
+
+ <div id="-middle-content">
+ <div class="docbook"><div class="navheader"><table summary="Navigation header" width="100%"><tr><th align="center" colspan="3">Appendix E. Miscellaneous</th></tr><tr><td align="left" width="20%"><a accesskey="p" href="Java-Broker-Appendix-Queue-Alerts.html">Prev</a> </td><th align="center" width="60%"> </th><td align="right" width="20%"> <a accesskey="n" href="Java-Broker-Miscellaneous-Installing-External-JDBC-Driver.html">Next</a></td></tr></table><hr /></div><div class="appendix"><div class="titlepage"><div><div><h1 class="title"><a id="Java-Broker-Miscellaneous"></a>Appendix E. Miscellaneous</h1></div></div></div><div class="toc"><p><strong>Table of Contents</strong></p><dl class="toc"><dt><span class="section"><a href="Java-Broker-Miscellaneous.html#Java-Broker-Miscellaneous-JVM-Verification">E.1. JVM Installation verification</a></span></dt><dd><dl><dt><span class="section"><a href="Java-Broker-Miscellaneous.html#Java-Broker-Miscella
neous-JVM-Verification-Windows">E.1.1. Verify JVM on Windows</a></span></dt><dt><span class="section"><a href="Java-Broker-Miscellaneous.html#Java-Broker-Miscellaneous-JVM-Verification-Unix">E.1.2. Verify JVM on Unix</a></span></dt></dl></dd><dt><span class="section"><a href="Java-Broker-Miscellaneous-Installing-External-JDBC-Driver.html">E.2. Installing External JDBC Driver</a></span></dt><dt><span class="section"><a href="Java-Broker-Miscellaneous-Installing-Oracle-BDB-JE.html">E.3. Installing Oracle BDB JE</a></span></dt></dl></div><div class="section"><div class="titlepage"><div><div><h2 class="title"><a id="Java-Broker-Miscellaneous-JVM-Verification"></a>E.1. JVM Installation verification</h2></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Java-Broker-Miscellaneous-JVM-Verification-Windows"></a>E.1.1. Verify JVM on Windows</h3></div></div></div><p> Firstly confirm that the JAVA_HOME environment variable is set correctly
by typing the
+ following at the command prompt: </p><pre class="programlisting">echo %JAVA_HOME%</pre><p> If JAVA_HOME is set you will see something similar to the following: </p><pre class="screen">c:"\PROGRA~1"\Java\jdk1.7.0_79\
+ </pre><p> Then confirm that a Java installation (1.7 or higher) is available: </p><pre class="programlisting">java -version</pre><p> If java is available on the path, output similar to the following will be seen: </p><pre class="screen">java version "1.7.0_79"
+Java(TM) SE Runtime Environment (build 1.7.0_79-b15)
+Java HotSpot(TM) 64-Bit Server VM (build 24.79-b02, mixed mode)</pre></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Java-Broker-Miscellaneous-JVM-Verification-Unix"></a>E.1.2. Verify JVM on Unix</h3></div></div></div><p> Firstly confirm that the JAVA_HOME environment variable is set correctly by typing the
+ following at the command prompt: </p><pre class="programlisting">echo $JAVA_HOME</pre><p> If JAVA_HOME is set you will see something similar to the following: </p><pre class="screen">/usr/java/jdk1.7.0_80
+ </pre><p> Then confirm that a Java installation (1.7 or higher) is available: </p><pre class="programlisting">java -version</pre><p> If java is available on the path, output similar to the following will be seen: </p><pre class="screen">java version "1.7.0_80"
+Java(TM) SE Runtime Environment (build 1.7.0_80-b15)
+Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)</pre></div></div></div><div class="navfooter"><hr /><table summary="Navigation footer" width="100%"><tr><td align="left" width="40%"><a accesskey="p" href="Java-Broker-Appendix-Queue-Alerts.html">Prev</a> </td><td align="center" width="20%"> </td><td align="right" width="40%"> <a accesskey="n" href="Java-Broker-Miscellaneous-Installing-External-JDBC-Driver.html">Next</a></td></tr><tr><td align="left" valign="top" width="40%">Appendix D. Queue Alerts </td><td align="center" width="20%"><a accesskey="h" href="index.html">Home</a></td><td align="right" valign="top" width="40%"> E.2. Installing External JDBC Driver</td></tr></table></div></div>
+
+ <hr/>
+
+ <ul id="-apache-navigation">
+ <li><a href="http://www.apache.org/">Apache</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>
+ <li><a href="http://www.apache.org/"><img id="-apache-feather" width="48" height="14" src="" alt="Apache"/></a></li>
+ </ul>
+
+ <p id="-legal">
+ Apache Qpid, Messaging built on AMQP; Copyright © 2015
+ The Apache Software Foundation; Licensed under
+ the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache
+ License, Version 2.0</a>; Apache Qpid, Qpid, Qpid Proton,
+ Proton, Apache, the Apache feather logo, and the Apache Qpid
+ project logo are trademarks of The Apache Software
+ Foundation; All other marks mentioned may be trademarks or
+ registered trademarks of their respective owners
+ </p>
+ </div>
+ </div>
+ </div>
+ </body>
+</html>
Added: qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Background-Recovery.html
URL: http://svn.apache.org/viewvc/qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Background-Recovery.html?rev=1718924&view=auto
==============================================================================
--- qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Background-Recovery.html (added)
+++ qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Background-Recovery.html Wed Dec 9 17:41:59 2015
@@ -0,0 +1,157 @@
+<!DOCTYPE html>
+<!--
+ -
+ - Licensed to the Apache Software Foundation (ASF) under one
+ - or more contributor license agreements. See the NOTICE file
+ - distributed with this work for additional information
+ - regarding copyright ownership. The ASF licenses this file
+ - to you under the Apache License, Version 2.0 (the
+ - "License"); you may not use this file except in compliance
+ - with the License. You may obtain a copy of the License at
+ -
+ - http://www.apache.org/licenses/LICENSE-2.0
+ -
+ - Unless required by applicable law or agreed to in writing,
+ - 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.
+ -
+-->
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
+ <head>
+ <title>9.7. Background Recovery - Apache Qpid™</title>
+ <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
+ <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+ <link rel="stylesheet" href="/site.css" type="text/css" async="async"/>
+ <link rel="stylesheet" href="/deferred.css" type="text/css" defer="defer"/>
+ <script type="text/javascript">var _deferredFunctions = [];</script>
+ <script type="text/javascript" src="/deferred.js" defer="defer"></script>
+ <!--[if lte IE 8]>
+ <link rel="stylesheet" href="/ie.css" type="text/css"/>
+ <script type="text/javascript" src="/html5shiv.js"></script>
+ <![endif]-->
+
+ <!-- Redirects for `go get` and godoc.org -->
+ <meta name="go-import"
+ content="qpid.apache.org git https://github.com/alanconway/proton-go.git"/>
+ <meta name="go-source"
+ content="qpid.apache.org
+https://github.com/alanconway/proton-go/tree/master/README.md
+https://github.com/alanconway/proton-go/tree/master{/dir}
+https://github.com/alanconway/proton-go/blob/master{/dir}/{file}#L{line}"/>
+ </head>
+ <body>
+ <div id="-content">
+ <div id="-top" class="panel">
+ <a id="-menu-link"><img width="16" height="16" src="" alt="Menu"/></a>
+
+ <a id="-search-link"><img width="22" height="16" src="" alt="Search"/></a>
+
+ <ul id="-global-navigation">
+ <li><a id="-logotype" href="/index.html">Apache Qpid<sup>™</sup></a></li>
+ <li><a href="/documentation.html">Documentation</a></li>
+ <li><a href="/download.html">Download</a></li>
+ <li><a href="/discussion.html">Discussion</a></li>
+ </ul>
+ </div>
+
+ <div id="-menu" class="panel" style="display: none;">
+ <div class="flex">
+ <section>
+ <h3>Project</h3>
+
+ <ul>
+ <li><a href="/overview.html">Overview</a></li>
+ <li><a href="/components/index.html">Components</a></li>
+ <li><a href="/releases/index.html">Releases</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Messaging APIs</h3>
+
+ <ul>
+ <li><a href="/proton/index.html">Qpid Proton</a></li>
+ <li><a href="/components/jms/index.html">Qpid JMS</a></li>
+ <li><a href="/components/messaging-api/index.html">Qpid Messaging API</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Servers and tools</h3>
+
+ <ul>
+ <li><a href="/components/java-broker/index.html">Java broker</a></li>
+ <li><a href="/components/cpp-broker/index.html">C++ broker</a></li>
+ <li><a href="/components/dispatch-router/index.html">Dispatch router</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Resources</h3>
+
+ <ul>
+ <li><a href="/dashboard.html">Dashboard</a></li>
+ <li><a href="https://cwiki.apache.org/confluence/display/qpid/Index">Wiki</a></li>
+ <li><a href="/resources.html">More resources</a></li>
+ </ul>
+ </section>
+ </div>
+ </div>
+
+ <div id="-search" class="panel" style="display: none;">
+ <form action="http://www.google.com/search" method="get">
+ <input type="hidden" name="sitesearch" value="qpid.apache.org"/>
+ <input type="text" name="q" maxlength="255" autofocus="autofocus" tabindex="1"/>
+ <button type="submit">Search</button>
+ <a href="/search.html">More ways to search</a>
+ </form>
+ </div>
+
+ <div id="-middle" class="panel">
+ <ul id="-path-navigation"><li><a href="/index.html">Home</a></li><li><a href="/releases/index.html">Releases</a></li><li><a href="/releases/qpid-java-6.0.0/index.html">Qpid Java 6.0.0</a></li><li><a href="/releases/qpid-java-6.0.0/java-broker/book/index.html">AMQP Messaging Broker (Java)</a></li><li>9.7. Background Recovery</li></ul>
+
+ <div id="-middle-content">
+ <div class="docbook"><div class="navheader"><table summary="Navigation header" width="100%"><tr><th align="center" colspan="3">9.7. Background Recovery</th></tr><tr><td align="left" width="20%"><a accesskey="p" href="Java-Broker-Runtime-Flow-To-Disk.html">Prev</a> </td><th align="center" width="60%">Chapter 9. Runtime</th><td align="right" width="20%"> <a accesskey="n" href="Java-Broker-Runtime-Message-Compression.html">Next</a></td></tr></table><hr /></div><div class="section"><div class="titlepage"><div><div><h2 class="title"><a id="Java-Broker-Runtime-Background-Recovery"></a>9.7. Background Recovery</h2></div></div></div><p>On startup of the Broker, or restart of a Virtualhost, the Broker restores all durable
+ queues and their messages from disk. In the Broker's default mode the Virtualhosts do not become
+ active until this recovery process completes. If queues have a large number of entries, this may
+ take considerable time. During this time no messaging can be performed.</p><p>The Broker has a background recovery feature allows the system to return to operation
+ sooner. If enabled the recovery process takes place in the background allow producers and
+ consumers to begin work earlier.</p><p>The feature respects the message delivery order requirements of standard queues, that is any
+ messages arriving whilst the background recovery is in flight won't overtake older messages
+ still to be recovered from disk. There is an exception for the out of order queue types whilst
+ background recovery is in flight. For instance, with priority queues older lower priority
+ messages may be delivered before newer, higher priority.</p><p>To activate the feature, set a <a class="link" href="Java-Broker-Management-Managing-Entities.html#Java-Broker-Management-Managing-Entities-General" title="7.1. General Description">context variable</a>
+ <code class="literal">use_async_message_store_recovery</code> at the desired Virtualhost, or at Broker or
+ higher to enable the feature broker-wide.</p><div class="note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3><p>The background recovery feature does not write operational log messages to indicate its
+ progress. This means messages <a class="link" href="Java-Broker-Appendix-Operation-Logging.html#Java-Broker-Appendix-Operation-Logging-Message-MST-1004">MST-1004</a> and <a class="link" href="Java-Broker-Appendix-Operation-Logging.html#Java-Broker-Appendix-Operation-Logging-Message-MST-1005">MST-1005</a> will not
+ be seen.</p></div></div><div class="navfooter"><hr /><table summary="Navigation footer" width="100%"><tr><td align="left" width="40%"><a accesskey="p" href="Java-Broker-Runtime-Flow-To-Disk.html">Prev</a> </td><td align="center" width="20%"><a accesskey="u" href="Java-Broker-Runtime.html">Up</a></td><td align="right" width="40%"> <a accesskey="n" href="Java-Broker-Runtime-Message-Compression.html">Next</a></td></tr><tr><td align="left" valign="top" width="40%">9.6. Flow to Disk </td><td align="center" width="20%"><a accesskey="h" href="index.html">Home</a></td><td align="right" valign="top" width="40%"> 9.8. Message Compression</td></tr></table></div></div>
+
+ <hr/>
+
+ <ul id="-apache-navigation">
+ <li><a href="http://www.apache.org/">Apache</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>
+ <li><a href="http://www.apache.org/"><img id="-apache-feather" width="48" height="14" src="" alt="Apache"/></a></li>
+ </ul>
+
+ <p id="-legal">
+ Apache Qpid, Messaging built on AMQP; Copyright © 2015
+ The Apache Software Foundation; Licensed under
+ the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache
+ License, Version 2.0</a>; Apache Qpid, Qpid, Qpid Proton,
+ Proton, Apache, the Apache feather logo, and the Apache Qpid
+ project logo are trademarks of The Apache Software
+ Foundation; All other marks mentioned may be trademarks or
+ registered trademarks of their respective owners
+ </p>
+ </div>
+ </div>
+ </div>
+ </body>
+</html>
Added: qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Close-Connection-When-No-Route.html
URL: http://svn.apache.org/viewvc/qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Close-Connection-When-No-Route.html?rev=1718924&view=auto
==============================================================================
--- qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Close-Connection-When-No-Route.html (added)
+++ qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Close-Connection-When-No-Route.html Wed Dec 9 17:41:59 2015
@@ -0,0 +1,173 @@
+<!DOCTYPE html>
+<!--
+ -
+ - Licensed to the Apache Software Foundation (ASF) under one
+ - or more contributor license agreements. See the NOTICE file
+ - distributed with this work for additional information
+ - regarding copyright ownership. The ASF licenses this file
+ - to you under the Apache License, Version 2.0 (the
+ - "License"); you may not use this file except in compliance
+ - with the License. You may obtain a copy of the License at
+ -
+ - http://www.apache.org/licenses/LICENSE-2.0
+ -
+ - Unless required by applicable law or agreed to in writing,
+ - 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.
+ -
+-->
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
+ <head>
+ <title>9.5. Closing client connections on unroutable mandatory messages - Apache Qpid™</title>
+ <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
+ <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
+ <link rel="stylesheet" href="/site.css" type="text/css" async="async"/>
+ <link rel="stylesheet" href="/deferred.css" type="text/css" defer="defer"/>
+ <script type="text/javascript">var _deferredFunctions = [];</script>
+ <script type="text/javascript" src="/deferred.js" defer="defer"></script>
+ <!--[if lte IE 8]>
+ <link rel="stylesheet" href="/ie.css" type="text/css"/>
+ <script type="text/javascript" src="/html5shiv.js"></script>
+ <![endif]-->
+
+ <!-- Redirects for `go get` and godoc.org -->
+ <meta name="go-import"
+ content="qpid.apache.org git https://github.com/alanconway/proton-go.git"/>
+ <meta name="go-source"
+ content="qpid.apache.org
+https://github.com/alanconway/proton-go/tree/master/README.md
+https://github.com/alanconway/proton-go/tree/master{/dir}
+https://github.com/alanconway/proton-go/blob/master{/dir}/{file}#L{line}"/>
+ </head>
+ <body>
+ <div id="-content">
+ <div id="-top" class="panel">
+ <a id="-menu-link"><img width="16" height="16" src="" alt="Menu"/></a>
+
+ <a id="-search-link"><img width="22" height="16" src="" alt="Search"/></a>
+
+ <ul id="-global-navigation">
+ <li><a id="-logotype" href="/index.html">Apache Qpid<sup>™</sup></a></li>
+ <li><a href="/documentation.html">Documentation</a></li>
+ <li><a href="/download.html">Download</a></li>
+ <li><a href="/discussion.html">Discussion</a></li>
+ </ul>
+ </div>
+
+ <div id="-menu" class="panel" style="display: none;">
+ <div class="flex">
+ <section>
+ <h3>Project</h3>
+
+ <ul>
+ <li><a href="/overview.html">Overview</a></li>
+ <li><a href="/components/index.html">Components</a></li>
+ <li><a href="/releases/index.html">Releases</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Messaging APIs</h3>
+
+ <ul>
+ <li><a href="/proton/index.html">Qpid Proton</a></li>
+ <li><a href="/components/jms/index.html">Qpid JMS</a></li>
+ <li><a href="/components/messaging-api/index.html">Qpid Messaging API</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Servers and tools</h3>
+
+ <ul>
+ <li><a href="/components/java-broker/index.html">Java broker</a></li>
+ <li><a href="/components/cpp-broker/index.html">C++ broker</a></li>
+ <li><a href="/components/dispatch-router/index.html">Dispatch router</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Resources</h3>
+
+ <ul>
+ <li><a href="/dashboard.html">Dashboard</a></li>
+ <li><a href="https://cwiki.apache.org/confluence/display/qpid/Index">Wiki</a></li>
+ <li><a href="/resources.html">More resources</a></li>
+ </ul>
+ </section>
+ </div>
+ </div>
+
+ <div id="-search" class="panel" style="display: none;">
+ <form action="http://www.google.com/search" method="get">
+ <input type="hidden" name="sitesearch" value="qpid.apache.org"/>
+ <input type="text" name="q" maxlength="255" autofocus="autofocus" tabindex="1"/>
+ <button type="submit">Search</button>
+ <a href="/search.html">More ways to search</a>
+ </form>
+ </div>
+
+ <div id="-middle" class="panel">
+ <ul id="-path-navigation"><li><a href="/index.html">Home</a></li><li><a href="/releases/index.html">Releases</a></li><li><a href="/releases/qpid-java-6.0.0/index.html">Qpid Java 6.0.0</a></li><li><a href="/releases/qpid-java-6.0.0/java-broker/book/index.html">AMQP Messaging Broker (Java)</a></li><li>9.5. Closing client connections on unroutable mandatory messages</li></ul>
+
+ <div id="-middle-content">
+ <div class="docbook"><div class="navheader"><table summary="Navigation header" width="100%"><tr><th align="center" colspan="3">9.5. Closing client connections on unroutable mandatory messages</th></tr><tr><td align="left" width="20%"><a accesskey="p" href="Java-Broker-Runtime-Handling-Undeliverable-Messages.html">Prev</a> </td><th align="center" width="60%">Chapter 9. Runtime</th><td align="right" width="20%"> <a accesskey="n" href="Java-Broker-Runtime-Flow-To-Disk.html">Next</a></td></tr></table><hr /></div><div class="section"><div class="titlepage"><div><div><h2 class="title"><a id="Java-Broker-Runtime-Close-Connection-When-No-Route"></a>9.5. Closing client connections on unroutable mandatory messages</h2></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Java-Broker-Runtime-Close-Connection-When-No-Route-Summary"></a>9.5.1. Summary</h3></div></div></div><p>
+ Due to asynchronous nature of AMQP 0-8/0-9/0-9-1 protocols sending a message with a routing key for which no queue binding exist results
+ in either message being bounced back (if it is mandatory or immediate) or discarded on broker side otherwise.
+ </p><p>
+ When a 'mandatory' message is returned back, the Qpid JMS client conveys this by delivering
+ an <span class="emphasis"><em>AMQNoRouteException</em></span> through the configured ExceptionListener on the Connection.
+ This does not cause channel or connection closure, however it requires a special exception handling
+ on client side in order to deal with <span class="emphasis"><em>AMQNoRouteExceptions</em></span>.
+ This could potentially be a problem when using various messaging frameworks (e.g. Mule)
+ as they usually close the connection on receiving any JMSException.
+ </p><p>
+ In order to simplify application handling of scenarios where 'mandatory' messages
+ are being sent to queues which do not actually exist, the Java Broker can be configured such that
+ it will respond to this situation by closing the connection
+ rather than returning the unroutable message to the client as it normally should.
+ From the application perspective, this will result in failure of synchronous operations in progress such as a session commit() call.
+ </p><div class="note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3><p>This feature affects only transacted sessions.</p><p>
+ Qpid JMS client sends 'mandatory' messages when using Queue destinations
+ and 'non-mandatory' messages when using Topic destinations.
+ </p></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Java-Broker-Runtime-Close-Connection-When-No-Route-Configuration"></a>9.5.2. Configuring <span class="emphasis"><em>closeWhenNoRoute</em></span></h3></div></div></div><p>
+ The Broker attribute <span class="emphasis"><em>closeWhenNoRoute</em></span> can be set to specify this feature on broker side.
+ By default, it is turned on. Setting <span class="emphasis"><em>closeWhenNoRoute</em></span> to <span class="emphasis"><em>false</em></span> switches it off.
+ </p><p>
+ Setting the <span class="emphasis"><em>closeWhenNoRoute</em></span> in the JMS client connection URL can override the broker configuration
+ on a connection specific basis, for example :
+ </p><div class="example"><a id="idm140683143330832"></a><p class="title"><strong>Example 9.1. Disable feature to close connection on unroutable messages with client URL</strong></p><div class="example-contents"><pre class="screen">
+amqp://guest:guest@clientid/?brokerlist='tcp://localhost:5672'&closeWhenNoRoute='false'</pre></div></div><br class="example-break" /><p>
+ If no value is specified on the client the broker setting will be used. If client setting is specified then it will take precedence
+ over the broker-wide configuration. If the client specifies and broker does not support this feature the warning will be logged.
+ </p></div></div><div class="navfooter"><hr /><table summary="Navigation footer" width="100%"><tr><td align="left" width="40%"><a accesskey="p" href="Java-Broker-Runtime-Handling-Undeliverable-Messages.html">Prev</a> </td><td align="center" width="20%"><a accesskey="u" href="Java-Broker-Runtime.html">Up</a></td><td align="right" width="40%"> <a accesskey="n" href="Java-Broker-Runtime-Flow-To-Disk.html">Next</a></td></tr><tr><td align="left" valign="top" width="40%">9.4. Handing Undeliverable Messages </td><td align="center" width="20%"><a accesskey="h" href="index.html">Home</a></td><td align="right" valign="top" width="40%"> 9.6. Flow to Disk</td></tr></table></div></div>
+
+ <hr/>
+
+ <ul id="-apache-navigation">
+ <li><a href="http://www.apache.org/">Apache</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>
+ <li><a href="http://www.apache.org/"><img id="-apache-feather" width="48" height="14" src="" alt="Apache"/></a></li>
+ </ul>
+
+ <p id="-legal">
+ Apache Qpid, Messaging built on AMQP; Copyright © 2015
+ The Apache Software Foundation; Licensed under
+ the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache
+ License, Version 2.0</a>; Apache Qpid, Qpid, Qpid Proton,
+ Proton, Apache, the Apache feather logo, and the Apache Qpid
+ project logo are trademarks of The Apache Software
+ Foundation; All other marks mentioned may be trademarks or
+ registered trademarks of their respective owners
+ </p>
+ </div>
+ </div>
+ </div>
+ </body>
+</html>
Added: qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Connection-Limit.html
URL: http://svn.apache.org/viewvc/qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Connection-Limit.html?rev=1718924&view=auto
==============================================================================
--- qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Connection-Limit.html (added)
+++ qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Connection-Limit.html Wed Dec 9 17:41:59 2015
@@ -0,0 +1,167 @@
+<!DOCTYPE html>
+<!--
+ -
+ - Licensed to the Apache Software Foundation (ASF) under one
+ - or more contributor license agreements. See the NOTICE file
+ - distributed with this work for additional information
+ - regarding copyright ownership. The ASF licenses this file
+ - to you under the Apache License, Version 2.0 (the
+ - "License"); you may not use this file except in compliance
+ - with the License. You may obtain a copy of the License at
+ -
+ - http://www.apache.org/licenses/LICENSE-2.0
+ -
+ - Unless required by applicable law or agreed to in writing,
+ - 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.
+ -
+-->
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
+ <head>
+ <title>9.9. Connection Limits - Apache Qpid™</title>
+ <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
+ <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
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+ <script type="text/javascript">var _deferredFunctions = [];</script>
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+ <!--[if lte IE 8]>
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+
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+ content="qpid.apache.org git https://github.com/alanconway/proton-go.git"/>
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+https://github.com/alanconway/proton-go/tree/master/README.md
+https://github.com/alanconway/proton-go/tree/master{/dir}
+https://github.com/alanconway/proton-go/blob/master{/dir}/{file}#L{line}"/>
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+ <body>
+ <div id="-content">
+ <div id="-top" class="panel">
+ <a id="-menu-link"><img width="16" height="16" src="" alt="Menu"/></a>
+
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+ </ul>
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+
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+ <div class="flex">
+ <section>
+ <h3>Project</h3>
+
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+ <li><a href="/components/index.html">Components</a></li>
+ <li><a href="/releases/index.html">Releases</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Messaging APIs</h3>
+
+ <ul>
+ <li><a href="/proton/index.html">Qpid Proton</a></li>
+ <li><a href="/components/jms/index.html">Qpid JMS</a></li>
+ <li><a href="/components/messaging-api/index.html">Qpid Messaging API</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Servers and tools</h3>
+
+ <ul>
+ <li><a href="/components/java-broker/index.html">Java broker</a></li>
+ <li><a href="/components/cpp-broker/index.html">C++ broker</a></li>
+ <li><a href="/components/dispatch-router/index.html">Dispatch router</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Resources</h3>
+
+ <ul>
+ <li><a href="/dashboard.html">Dashboard</a></li>
+ <li><a href="https://cwiki.apache.org/confluence/display/qpid/Index">Wiki</a></li>
+ <li><a href="/resources.html">More resources</a></li>
+ </ul>
+ </section>
+ </div>
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+
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+ <form action="http://www.google.com/search" method="get">
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+ <a href="/search.html">More ways to search</a>
+ </form>
+ </div>
+
+ <div id="-middle" class="panel">
+ <ul id="-path-navigation"><li><a href="/index.html">Home</a></li><li><a href="/releases/index.html">Releases</a></li><li><a href="/releases/qpid-java-6.0.0/index.html">Qpid Java 6.0.0</a></li><li><a href="/releases/qpid-java-6.0.0/java-broker/book/index.html">AMQP Messaging Broker (Java)</a></li><li>9.9. Connection Limits</li></ul>
+
+ <div id="-middle-content">
+ <div class="docbook"><div class="navheader"><table summary="Navigation header" width="100%"><tr><th align="center" colspan="3">9.9. Connection Limits</th></tr><tr><td align="left" width="20%"><a accesskey="p" href="Java-Broker-Runtime-Message-Compression.html">Prev</a> </td><th align="center" width="60%">Chapter 9. Runtime</th><td align="right" width="20%"> <a accesskey="n" href="Java-Broker-Runtime-Memory.html">Next</a></td></tr></table><hr /></div><div class="section"><div class="titlepage"><div><div><h2 class="title"><a id="Java-Broker-Runtime-Connection-Limit"></a>9.9. Connection Limits</h2></div></div></div><p>
+ Each connection to the Broker consumes resources while it is connected. In order to protect
+ the Broker against malfunctioning (or malicious) client processes, it is possible to limit the
+ number of connections that can be active on any given port.
+ </p><p>
+ Connection limits on AMQP ports are controlled by an attribute "maxOpenConnections" on
+ the port. By default this takes the value of the context variable
+ <code class="literal">qpid.port.max_open_connections</code> which in itself is defaulted to the
+ value <code class="literal">-1</code> meaning there is no limit.
+ </p><p>
+ If the interpolated value of <code class="literal">maxOpenConnections</code> on an AMQP port is a
+ positive integer, then when that many active connections have been established no new
+ connections will be allowed (until an existing connection has been closed). Any such
+ rejection of a connection will be accompanied by the operational log message
+ <a class="link" href="Java-Broker-Appendix-Operation-Logging.html#Java-Broker-Appendix-Operation-Logging-Message-PRT-1005">PRT-1005</a>.
+ </p><p>
+ The context variable <code class="literal">qpid.port.open_connections_warn_percent</code> can be
+ used to control when a warning log message is generated as the number of open connections
+ approaches the limit for the port. The default value of this variable is
+ <code class="literal">80</code> meaning that if more the number of open connections to the port
+ has exceeded 80% of the given limit then the operatinal log message
+ <a class="link" href="Java-Broker-Appendix-Operation-Logging.html#Java-Broker-Appendix-Operation-Logging-Message-PRT-1004">PRT-1004</a>
+ will be generated.
+ </p></div><div class="navfooter"><hr /><table summary="Navigation footer" width="100%"><tr><td align="left" width="40%"><a accesskey="p" href="Java-Broker-Runtime-Message-Compression.html">Prev</a> </td><td align="center" width="20%"><a accesskey="u" href="Java-Broker-Runtime.html">Up</a></td><td align="right" width="40%"> <a accesskey="n" href="Java-Broker-Runtime-Memory.html">Next</a></td></tr><tr><td align="left" valign="top" width="40%">9.8. Message Compression </td><td align="center" width="20%"><a accesskey="h" href="index.html">Home</a></td><td align="right" valign="top" width="40%"> 9.10. Memory</td></tr></table></div></div>
+
+ <hr/>
+
+ <ul id="-apache-navigation">
+ <li><a href="http://www.apache.org/">Apache</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>
+ <li><a href="http://www.apache.org/"><img id="-apache-feather" width="48" height="14" src="" alt="Apache"/></a></li>
+ </ul>
+
+ <p id="-legal">
+ Apache Qpid, Messaging built on AMQP; Copyright © 2015
+ The Apache Software Foundation; Licensed under
+ the <a href="http://www.apache.org/licenses/LICENSE-2.0">Apache
+ License, Version 2.0</a>; Apache Qpid, Qpid, Qpid Proton,
+ Proton, Apache, the Apache feather logo, and the Apache Qpid
+ project logo are trademarks of The Apache Software
+ Foundation; All other marks mentioned may be trademarks or
+ registered trademarks of their respective owners
+ </p>
+ </div>
+ </div>
+ </div>
+ </body>
+</html>
Added: qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Disk-Space-Management.html
URL: http://svn.apache.org/viewvc/qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Disk-Space-Management.html?rev=1718924&view=auto
==============================================================================
--- qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Disk-Space-Management.html (added)
+++ qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Disk-Space-Management.html Wed Dec 9 17:41:59 2015
@@ -0,0 +1,239 @@
+<!DOCTYPE html>
+<!--
+ -
+ - Licensed to the Apache Software Foundation (ASF) under one
+ - or more contributor license agreements. See the NOTICE file
+ - distributed with this work for additional information
+ - regarding copyright ownership. The ASF licenses this file
+ - to you under the Apache License, Version 2.0 (the
+ - "License"); you may not use this file except in compliance
+ - with the License. You may obtain a copy of the License at
+ -
+ - http://www.apache.org/licenses/LICENSE-2.0
+ -
+ - Unless required by applicable law or agreed to in writing,
+ - 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.
+ -
+-->
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
+ <head>
+ <title>9.2. Disk Space Management - Apache Qpid™</title>
+ <meta http-equiv="X-UA-Compatible" content="IE=edge"/>
+ <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
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+ <script type="text/javascript">var _deferredFunctions = [];</script>
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+ <!--[if lte IE 8]>
+ <link rel="stylesheet" href="/ie.css" type="text/css"/>
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+ <![endif]-->
+
+ <!-- Redirects for `go get` and godoc.org -->
+ <meta name="go-import"
+ content="qpid.apache.org git https://github.com/alanconway/proton-go.git"/>
+ <meta name="go-source"
+ content="qpid.apache.org
+https://github.com/alanconway/proton-go/tree/master/README.md
+https://github.com/alanconway/proton-go/tree/master{/dir}
+https://github.com/alanconway/proton-go/blob/master{/dir}/{file}#L{line}"/>
+ </head>
+ <body>
+ <div id="-content">
+ <div id="-top" class="panel">
+ <a id="-menu-link"><img width="16" height="16" src="" alt="Menu"/></a>
+
+ <a id="-search-link"><img width="22" height="16" src="" alt="Search"/></a>
+
+ <ul id="-global-navigation">
+ <li><a id="-logotype" href="/index.html">Apache Qpid<sup>™</sup></a></li>
+ <li><a href="/documentation.html">Documentation</a></li>
+ <li><a href="/download.html">Download</a></li>
+ <li><a href="/discussion.html">Discussion</a></li>
+ </ul>
+ </div>
+
+ <div id="-menu" class="panel" style="display: none;">
+ <div class="flex">
+ <section>
+ <h3>Project</h3>
+
+ <ul>
+ <li><a href="/overview.html">Overview</a></li>
+ <li><a href="/components/index.html">Components</a></li>
+ <li><a href="/releases/index.html">Releases</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Messaging APIs</h3>
+
+ <ul>
+ <li><a href="/proton/index.html">Qpid Proton</a></li>
+ <li><a href="/components/jms/index.html">Qpid JMS</a></li>
+ <li><a href="/components/messaging-api/index.html">Qpid Messaging API</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Servers and tools</h3>
+
+ <ul>
+ <li><a href="/components/java-broker/index.html">Java broker</a></li>
+ <li><a href="/components/cpp-broker/index.html">C++ broker</a></li>
+ <li><a href="/components/dispatch-router/index.html">Dispatch router</a></li>
+ </ul>
+ </section>
+
+ <section>
+ <h3>Resources</h3>
+
+ <ul>
+ <li><a href="/dashboard.html">Dashboard</a></li>
+ <li><a href="https://cwiki.apache.org/confluence/display/qpid/Index">Wiki</a></li>
+ <li><a href="/resources.html">More resources</a></li>
+ </ul>
+ </section>
+ </div>
+ </div>
+
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+ <input type="hidden" name="sitesearch" value="qpid.apache.org"/>
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+ <button type="submit">Search</button>
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+
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+ <ul id="-path-navigation"><li><a href="/index.html">Home</a></li><li><a href="/releases/index.html">Releases</a></li><li><a href="/releases/qpid-java-6.0.0/index.html">Qpid Java 6.0.0</a></li><li><a href="/releases/qpid-java-6.0.0/java-broker/book/index.html">AMQP Messaging Broker (Java)</a></li><li>9.2. Disk Space Management</li></ul>
+
+ <div id="-middle-content">
+ <div class="docbook"><div class="navheader"><table summary="Navigation header" width="100%"><tr><th align="center" colspan="3">9.2. Disk Space Management</th></tr><tr><td align="left" width="20%"><a accesskey="p" href="Java-Broker-Runtime.html">Prev</a> </td><th align="center" width="60%">Chapter 9. Runtime</th><td align="right" width="20%"> <a accesskey="n" href="Java-Broker-Runtime-Producer-Transaction-Timeout.html">Next</a></td></tr></table><hr /></div><div class="section"><div class="titlepage"><div><div><h2 class="title"><a id="Java-Broker-Runtime-Disk-Space-Management"></a>9.2. Disk Space Management</h2></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Qpid-Producer-Flow-Control"></a>9.2.1. Producer Flow Control</h3></div></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="Java-Broker-Runtime-Disk-Space-Management-Producer-Flow-Control-GeneralInfor
mation"></a>9.2.1.1. General Information</h4></div></div></div><p>
+ The Java Broker supports a flow control mechanism to which can be used to prevent either a single queue
+ or a virtualhost exceeding configured limits. These two mechanisms are described
+ next.
+ </p></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="Java-Broker-Runtime-Disk-Space-Management-Producer-Flow-Control-ServerConfiguration"></a>9.2.1.2. Server Configuration</h4></div></div></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a id="idm140683142043184"></a>Configuring a Queue to use flow control</h5></div></div></div><p>
+ Flow control is enabled on a producer when it sends a message to a Queue
+ which is "overfull". The producer flow control will be rescinded when all
+ Queues on which a producer is blocking become "underfull". A Queue is defined
+ as overfull when the size (in bytes) of the messages on the queue exceeds the
+ <span class="emphasis"><em>capacity</em></span> of the Queue. A Queue becomes "underfull" when its
+ size becomes less than the <span class="emphasis"><em>resume capacity</em></span>.
+ </p><p>
+ The capacity and resume capacity can be specified when the queue is created. This
+ can be done using the Flow Control Settings within the Queue creation dialogue.
+ </p><div class="section"><div class="titlepage"><div><div><h6 class="title"><a id="idm140683141999968"></a>Broker Log Messages</h6></div></div></div><p>
+ There are four Broker log messages that may occur if flow control through queue capacity limits is enabled.
+ Firstly, when a capacity limited queue becomes overfull, a log message similar to the following is produced
+ </p><pre class="programlisting">
+MESSAGE [vh(/test)/qu(MyQueue)] [vh(/test)/qu(MyQueue)] QUE-1003 : Overfull : Size : 1,200 bytes, Capacity : 1,000
+ </pre><p>Then for each channel which becomes blocked upon the overful queue a log message similar to the following is produced:</p><pre class="programlisting">
+MESSAGE [con:2(guest@anonymous(713889609)/test)/ch:1] [con:2(guest@anonymous(713889609)/test)/ch:1] CHN-1005 : Flow Control Enforced (Queue MyQueue)
+ </pre><p>When enough messages have been consumed from the queue that it becomes underfull, then the following log is generated: </p><pre class="programlisting">
+MESSAGE [vh(/test)/qu(MyQueue)] [vh(/test)/qu(MyQueue)] QUE-1004 : Underfull : Size : 600 bytes, Resume Capacity : 800
+ </pre><p>And for every channel which becomes unblocked you will see a message similar to: </p><pre class="programlisting">
+MESSAGE [con:2(guest@anonymous(713889609)/test)/ch:1] [con:2(guest@anonymous(713889609)/test)/ch:1] CHN-1006 : Flow Control Removed
+ </pre><p>Obviously the details of connection, virtual host, queue, size, capacity, etc would depend on the configuration in use.</p></div></div><div class="section"><div class="titlepage"><div><div><h5 class="title"><a id="idm140683143545936"></a>Disk quota-based flow control</h5></div></div></div><p>
+ Flow control can also be triggered when a configured disk quota is exceeded. This is supported by the BDB and
+ Derby virtualhosts.
+ </p><p>
+ This functionality blocks all producers on reaching the disk overflow limit. When consumers
+ consume the messages, causing disk space usage to falls below the underflow limit, the
+ producers are unblocked and continue working as normal.
+ </p><p>
+ Two limits can be configured:
+ </p><p>
+ overfull limit - the maximum space on disk (in bytes).
+ </p><p>
+ underfull limit - when the space on disk drops below this limit, producers are allowed to resume publishing.
+ </p><p>
+ The overfull and underful limit can be specified when a new virtualhost is created or an exiting
+ virtualhost is edited. This can be done using the Store Overflow and Store Underfull settings
+ within the virtual host creation and edit dialogue. If editing an existing virtualhost, the virtualhost
+ must be restarted for the new values to take effect.
+ </p><p>
+ The disk quota functionality is based on "best effort" principle. This means the broker
+ cannot guarantee that the disk space limit will not be exceeded. If several concurrent
+ transactions are started before the limit is reached, which collectively cause the limit
+ to be exceeded, the broker may allow all of them to be committed.
+ </p><p>
+ The Broker will also impose flow control if the filesystem hosting a virtualhost
+ exceeds a <a class="link" href="Java-Broker-Management-Managing-Broker.html#Java-Broker-Management-Managing-Broker-Context-StoreFilesystemMaxUsagePercent">
+ configured percentage.</a>.
+ </p><div class="section"><div class="titlepage"><div><div><h6 class="title"><a id="idm140683145997952"></a>Broker Log Messages for quota flow control</h6></div></div></div><p>
+ There are two broker log messages that may occur if flow control through disk quota limits is enabled.
+ When the virtual host is blocked due to exceeding of the disk quota limit the following message
+ appears in the broker log
+ </p><pre class="programlisting">
+[vh(/test)/ms(BDBMessageStore)] MST-1008 : Store overfull, flow control will be enforced
+ </pre><p>
+ When virtual host is unblocked after cleaning the disk space the following message appears in the broker log
+ </p><pre class="programlisting">
+[vh(/test)/ms(BDBMessageStore)] MST-1009 : Store overfull condition cleared
+ </pre><p>
+ </p></div></div></div><div class="section"><div class="titlepage"><div><div><h4 class="title"><a id="Java-Broker-Runtime-Disk-Space-Management-Producer-Flow-Control-ClientImpact"></a>9.2.1.3. Client impact and configuration</h4></div></div></div><p>
+ If a producer sends to a queue which is overfull, the broker will respond by
+ instructing the client not to send any more messages. The impact of this is
+ that any future attempts to send will block until the broker rescinds the flow control order.
+ </p><p>
+ While blocking the client will periodically log the fact that it is blocked waiting on flow control.
+ </p><pre class="programlisting">
+WARN Message send delayed by 5s due to broker enforced flow control
+WARN Message send delayed by 10s due to broker enforced flow control
+ </pre><p>
+ After a set period the send will timeout and throw a JMSException to the calling code.
+ </p><p>
+ If such a JMSException is thrown, the message will not be sent to the broker,
+ however the underlying Session may still be active - in particular if the
+ Session is transactional then the current transaction will not be automatically
+ rolled back. Users may choose to either attempt to resend the message, or to
+ roll back any transactional work and close the Session.
+ </p><p>
+ Both the timeout delay and the periodicity of the warning messages can be set
+ using Java system properties.
+ </p><p>
+ The amount of time (in milliseconds) to wait before timing out
+ is controlled by the property qpid.flow_control_wait_failure.
+ </p><p>
+ The frequency at which the log message informing that the producer is flow
+ controlled is sent is controlled by the system property qpid.flow_control_wait_notify_period.
+ </p><p>
+ Adding the following to the command line to start the client would result in a timeout of one minute,
+ with warning messages every ten seconds:
+ </p><pre class="programlisting">
+-Dqpid.flow_control_wait_failure=60000
+-Dqpid.flow_control_wait_notify_period=10000
+ </pre></div></div></div><div class="navfooter"><hr /><table summary="Navigation footer" width="100%"><tr><td align="left" width="40%"><a accesskey="p" href="Java-Broker-Runtime.html">Prev</a> </td><td align="center" width="20%"><a accesskey="u" href="Java-Broker-Runtime.html">Up</a></td><td align="right" width="40%"> <a accesskey="n" href="Java-Broker-Runtime-Producer-Transaction-Timeout.html">Next</a></td></tr><tr><td align="left" valign="top" width="40%">Chapter 9. Runtime </td><td align="center" width="20%"><a accesskey="h" href="index.html">Home</a></td><td align="right" valign="top" width="40%"> 9.3. Producer Transaction Timeout</td></tr></table></div></div>
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+
+ <div id="-middle-content">
+ <div class="docbook"><div class="navheader"><table summary="Navigation header" width="100%"><tr><th align="center" colspan="3">9.6. Flow to Disk</th></tr><tr><td align="left" width="20%"><a accesskey="p" href="Java-Broker-Runtime-Close-Connection-When-No-Route.html">Prev</a> </td><th align="center" width="60%">Chapter 9. Runtime</th><td align="right" width="20%"> <a accesskey="n" href="Java-Broker-Runtime-Background-Recovery.html">Next</a></td></tr></table><hr /></div><div class="section"><div class="titlepage"><div><div><h2 class="title"><a id="Java-Broker-Runtime-Flow-To-Disk"></a>9.6. Flow to Disk</h2></div></div></div><p>Flow to disk limits the amount of <a class="link" href="Java-Broker-Runtime-Memory.html" title="9.10. Memory">direct and heap memory</a>
+ that can be occupied by messages. Once this
+ limit is reached any new transient messages and all existing transient messages will be
+ transferred to disk. Newly arriving transient messages will continue to go to the disk until the
+ cumulative size of all messages falls below the limit once again.</p><p>By default the Broker makes 40% of the max direct available memory for messages. This memory is
+ divided between all the queues across all virtual hosts defined on the Broker with a percentage
+ calculated according to their current queue size. These calculations are refreshed periodically
+ by the housekeeping cycle.</p><p>For example if there are two queues, one containing 75MB and the second 100MB messages
+ respectively and the Broker has 1GB direct memory with the default of 40% available for messages.
+ The first queue will have a target size of 170MB and the second 230MB. Once 400MB is taken by
+ messages, messages will begin to flow to disk. New messages will cease to flow to disk when
+ their cumulative size falls beneath 400MB.</p><p>Flow to disk is configured by Broker context variable
+ <code class="literal">broker.flowToDiskThreshold</code>. It is expressed as a size in bytes and defaults
+ to 40% of the JVM maximum heap size.</p><p>Log message <a class="link" href="Java-Broker-Appendix-Operation-Logging.html#Java-Broker-Appendix-Operation-Logging-Message-BRK-1014">BRK-1014</a> is written when the feature activates. Once the total space of all messages
+ decreases below the threshold, the message <a class="link" href="Java-Broker-Appendix-Operation-Logging.html#Java-Broker-Appendix-Operation-Logging-Message-BRK-1015">BRK-1015</a> is written
+ to show that the feature is no longer active.</p></div><div class="navfooter"><hr /><table summary="Navigation footer" width="100%"><tr><td align="left" width="40%"><a accesskey="p" href="Java-Broker-Runtime-Close-Connection-When-No-Route.html">Prev</a> </td><td align="center" width="20%"><a accesskey="u" href="Java-Broker-Runtime.html">Up</a></td><td align="right" width="40%"> <a accesskey="n" href="Java-Broker-Runtime-Background-Recovery.html">Next</a></td></tr><tr><td align="left" valign="top" width="40%">9.5. Closing client connections on unroutable mandatory messages </td><td align="center" width="20%"><a accesskey="h" href="index.html">Home</a></td><td align="right" valign="top" width="40%"> 9.7. Background Recovery</td></tr></table></div></div>
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Added: qpid/site/docs/releases/qpid-java-6.0.0/java-broker/book/Java-Broker-Runtime-Handling-Undeliverable-Messages.html
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+
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+ <div class="docbook"><div class="navheader"><table summary="Navigation header" width="100%"><tr><th align="center" colspan="3">9.4. Handing Undeliverable Messages</th></tr><tr><td align="left" width="20%"><a accesskey="p" href="Java-Broker-Runtime-Producer-Transaction-Timeout.html">Prev</a> </td><th align="center" width="60%">Chapter 9. Runtime</th><td align="right" width="20%"> <a accesskey="n" href="Java-Broker-Runtime-Close-Connection-When-No-Route.html">Next</a></td></tr></table><hr /></div><div class="section"><div class="titlepage"><div><div><h2 class="title"><a id="Java-Broker-Runtime-Handling-Undeliverable-Messages"></a>9.4. Handing Undeliverable Messages</h2></div></div></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Java-Broker-Runtime-Handling-Undeliverable-Messages-Introduction"></a>9.4.1. Introduction</h3></div></div></div><p> Messages that cannot be delivered successfully to a consumer (f
or instance, because the
+ client is using a transacted session and rolls-back the transaction) can be made available on
+ the queue again and then subsequently be redelivered, depending on the precise session
+ acknowledgement mode and messaging model used by the application. This is normally desirable
+ behaviour that contributes to the ability of a system to withstand unexpected errors. However, it
+ leaves open the possibility for a message to be repeatedly redelivered (potentially indefinitely),
+ consuming system resources and preventing the delivery of other messages. Such undeliverable
+ messages are sometimes known as poison messages.</p><p>For an example, consider a stock ticker application that has been designed to consume prices
+ contained within JMS TextMessages. What if inadvertently a BytesMessage is placed onto the queue?
+ As the ticker application does not expect the BytesMessage, its processing might fail and cause it
+ to roll-back the transaction, however the default behavior of the Broker would mean that the
+ BytesMessage would be delivered over and over again, preventing the delivery of other legitimate
+ messages, until an operator intervenes and removes the erroneous message from the queue. </p><p>Qpid has maximum delivery count and dead-letter queue (DLQ) features which can be used in
+ concert to construct a system that automatically handles such a condition. These features are
+ described in the following sections.</p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Java-Broker-Runtime-Handling-Undeliverable-Messages-Maximum-Delivery-Count"></a>9.4.2. Maximum Delivery Count</h3></div></div></div><p> Maximum delivery count is a property of a queue. If a consumer application is unable to
+ process a message more than the specified number of times, then the broker will either route the
+ message to a dead-letter queue (if one has been defined), or will discard the message. </p><p> In order for a maximum delivery count to be enforced, the consuming client
+ <span class="emphasis"><em>must</em></span> call <a class="ulink" href="http://docs.oracle.com/javaee/6/api/javax/jms/Session.html#rollback()" target="_top">Session#rollback()</a> (or <a class="ulink" href="http://docs.oracle.com/javaee/6/api/javax/jms/Session.html#recover()" target="_top">Session#recover()</a> if the session is not transacted). It is during the Broker's
+ processing of Session#rollback() (or Session#recover()) that if a message has been seen
+ at least the maximum number of times then it will move the message to the DLQ or discard the
+ message.</p><p>If the consuming client fails in another manner, for instance, closes the connection, the
+ message will not be re-routed and consumer application will see the same poison message again
+ once it reconnects.</p><p> If the consuming application is using AMQP 0-9-1, 0-9, or 0-8 protocols, it is necessary to
+ set the client system property <code class="varname">qpid.reject.behaviour</code> or connection or binding
+ URL option <code class="varname">rejectbehaviour</code> to the value <code class="literal">server</code>.</p><p>It is possible to determine the number of times a message has been sent to a consumer via
+ the Management interfaces, but is not possible to determine this information from a message client.
+ Specifically, the optional JMS message header <span class="property">JMSXDeliveryCount</span> is not
+ supported.</p><p>Maximum Delivery Count can be specified when a new queue is created or using the the
+ queue declare property <span class="property">x-qpid-maximum-delivery-count</span></p></div><div class="section"><div class="titlepage"><div><div><h3 class="title"><a id="Java-Broker-Runtime-Handling-Undeliverable-Messages-Dead-Letter-Queues"></a>9.4.3. Dead Letter Queues (DLQ)</h3></div></div></div><p>A Dead Letter Queue (DLQ) acts as an destination for messages that have somehow exceeded the
+ normal bounds of processing and is utilised to prevent disruption to flow of other messages. When
+ a DLQ is enabled for a given queue if a consuming client indicates it no longer wishes the
+ receive the message (typically by exceeding a Maximum Delivery Count) then the message is moved
+ onto the DLQ and removed from the original queue. </p><p>The DLQ feature causes generation of a Dead Letter Exchange and a Dead Letter Queue. These
+ are named convention QueueName<span class="emphasis"><em>_DLE</em></span> and QueueName<span class="emphasis"><em>_DLQ</em></span>.</p><p>DLQs can be enabled when a new queue is created
+ or using the queue declare property <span class="property">x-qpid-dlq-enabled</span>.</p><div class="caution" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Avoid excessive queue depth</h3><p>Applications making use of DLQs <span class="emphasis"><em>should</em></span> make provision for the frequent
+ examination of messages arriving on DLQs so that both corrective actions can be taken to resolve
+ the underlying cause and organise for their timely removal from the DLQ. Messages on DLQs
+ consume system resources in the same manner as messages on normal queues so excessive queue
+ depths should not be permitted to develop.</p></div></div></div><div class="navfooter"><hr /><table summary="Navigation footer" width="100%"><tr><td align="left" width="40%"><a accesskey="p" href="Java-Broker-Runtime-Producer-Transaction-Timeout.html">Prev</a> </td><td align="center" width="20%"><a accesskey="u" href="Java-Broker-Runtime.html">Up</a></td><td align="right" width="40%"> <a accesskey="n" href="Java-Broker-Runtime-Close-Connection-When-No-Route.html">Next</a></td></tr><tr><td align="left" valign="top" width="40%">9.3. Producer Transaction Timeout </td><td align="center" width="20%"><a accesskey="h" href="index.html">Home</a></td><td align="right" valign="top" width="40%"> 9.5. Closing client connections on unroutable mandatory messages</td></tr></table></div></div>
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