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Subject svn commit: r900335 - in /websites/staging/accumulo/trunk/content: ./ downloads/index.html release_notes/1.5.1.html release_notes/release_notes.html
Date Thu, 06 Mar 2014 20:37:50 GMT
Author: buildbot
Date: Thu Mar  6 20:37:49 2014
New Revision: 900335

Staging update by buildbot for accumulo

    websites/staging/accumulo/trunk/content/   (props changed)

Propchange: websites/staging/accumulo/trunk/content/
--- cms:source-revision (original)
+++ cms:source-revision Thu Mar  6 20:37:49 2014
@@ -1 +1 @@

Modified: websites/staging/accumulo/trunk/content/downloads/index.html
--- websites/staging/accumulo/trunk/content/downloads/index.html (original)
+++ websites/staging/accumulo/trunk/content/downloads/index.html Thu Mar  6 20:37:49 2014
@@ -92,7 +92,7 @@
   <div id="content">
     <h1 class="title">Apache Accumulo Downloads</h1>
     <h2 id="151-latest">1.5.1 (latest)</h2>
-<p>The most recent Apache Accumulo&trade; release is version 1.5.1.  See the <a
title="1.5.1 CHANGES">CHANGES</a>.<br />
+<p>The most recent Apache Accumulo&trade; release is version 1.5.1.  See the <a
href="/release_notes/1.5.1.html">release notes</a> and <a href=";a=blob_plain;f=CHANGES;hb=3478f71ae888f8d73aaa93837319a6dbb4ba0c8a"
title="1.5.1 CHANGES">CHANGES</a>.<br />
 Be sure to verify your downloads by these <a href=""
title="Verify">procedures</a> using these <a href=""
title="KEYS">KEYS</a>.<br />
 For convenience, <a href="">MD5</a>
and <a href="">SHA1</a> hashes
are also available.</p>
 <h4 id="generic-binaries">Generic Binaries</h4>

Added: websites/staging/accumulo/trunk/content/release_notes/1.5.1.html
--- websites/staging/accumulo/trunk/content/release_notes/1.5.1.html (added)
+++ websites/staging/accumulo/trunk/content/release_notes/1.5.1.html Thu Mar  6 20:37:49 2014
@@ -0,0 +1,206 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "">
+    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
+ 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.
+  <link href="/css/accumulo.css" rel="stylesheet" type="text/css">
+  <title>Apache Accumulo 1.5.1 Release Notes</title>
+  <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+  <script type="text/javascript">
+    var _gaq = _gaq || [];
+    _gaq.push(['_setAccount', 'UA-21103458-6']);
+    _gaq.push(['_setDomainName', '']);
+    _gaq.push(['_setAllowLinker', true]);
+    _gaq.push(['_trackPageview']);
+    (function() {
+      var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async =
+      ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') +
+      var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
+    })();
+  </script>
+  <div id="banner">&nbsp;
+  </div>
+  <div id="navigation">
+  <h1 id="project">Project</h1>
+<li><a href="/">Home</a></li>
+<li><a href="/downloads">Downloads</a></li>
+<li><a href="/notable_features.html">Features</a></li>
+<li><a href="">License</a></li>
+<h1 id="community">Community</h1>
+<li><a href="/get_involved.html">Get Involved</a></li>
+<li><a href="/mailing_list.html">Mailing Lists</a></li>
+<li><a href="/people.html">People</a></li>
+<h1 id="development">Development</h1>
+<li><a href="/source.html">Source &amp; Guide</a></li>
+<li><a href="/git.html">Git WIP</a></li>
+<li><a href="/contrib.html">Contrib Projects</a></li>
+<li><a href="/releasing.html">Making Releases</a></li>
+<li><a href="">Issues</a></li>
+<li><a href="">Builds</a></li>
+<h1 id="documentation">Documentation</h1>
+<li>Manual <a href="/1.4/user_manual">1.4</a> / <a href="/1.5/accumulo_user_manual.html">1.5</a></li>
+<li>Javadoc <a href="/1.4/apidocs">1.4</a> / <a href="/1.5/apidocs">1.5</a></li>
+<li>Examples <a href="/1.4/examples">1.4</a> / <a href="/1.5/examples">1.5</a></li>
+<li><a href="/screenshots.html">Screenshots</a></li>
+<li><a href="/papers.html">Papers &amp; Other Links</a></li>
+<li><a href="/glossary.html">Glossary</a></li>
+<h1 id="asf-links">ASF links</h1>
+<li><a href="">Apache Software Foundation</a></li>
+<li><a href="">Sponsorship</a></li>
+<li><a href="">Security</a></li>
+<li><a href="">Thanks</a></li>
+  </div>
+  <div id="bannertext">
+    <img id="logo" alt="Apache Accumulo" src="/images/accumulo-logo.png"/>&trade;
+  </div>
+  <div id="content">
+    <h1 class="title">Apache Accumulo 1.5.1 Release Notes</h1>
+    <p>Apache Accumulo 1.5.1 is a maintenance release on the 1.5 version branch.
+This release is contains changes from over 200 issues, comprised of bug fixes
+(client side and server side), new test cases, updated Hadoop support, and more.
+As this is a maintenance release, Apache Accumulo 1.5.1 has no client API 
+incompatibilities over Apache Accumulo 1.5.0 and requires no manual upgrade 
+process. Users of 1.5.0 are strongly encouraged to update as soon as possible 
+to benefit from the improvements.</p>
+<h2 id="notable-improvements">Notable Improvements</h2>
+<p>While new features are typically not added in a bug-fix release as 1.5.1, the
+community does create a variety of improvements that are API compatible. Contained
+here are some of the more notable improvements.</p>
+<h3 id="permgen-leak-from-client-api">PermGen Leak from Client API</h3>
+<p>Accumulo's client code creates background threads that users presently cannot 
+stop through the API. This is quick to cause problems when invoking the Accumulo
+API in application containers such as Apache Tomcat or JBoss and repeatedly 
+redeploying an application. <a href="">ACCUMULO-2128</a>
introduces a static utility, 
+org.apache.accumulo.core.util.CleanUp, that users can invoke as part of a 
+teardown hook in their container that will stop these threads and avoid 
+the eventual OutOfMemoryError "PermGen space".</p>
+<h3 id="prefer-ipv4-when-starting-accumulo-processes">Prefer IPv4 when starting Accumulo
+<p>While Hadoop <a href="">does not support
IPv6 networks</a>, attempting to run on a 
+system that does not have IPv6 completely disabled can cause strange failures.
+<a href="">ACCUMULO-2262</a>
invokes the JVM-provided configuration parameter at process
+startup to prefer IPv4 over IPv6.</p>
+<h3 id="memory-units-in-configuration">Memory units in configuration</h3>
+<p>In previous versions, units of memory had to be provided as upper-case (e.g. '2G',
not '2g').
+Additionally, a non-intuitive error was printed when a lower-case unit was provided.
+<a href="">ACCUMULO-1933</a>
allows lower-case memory units in all Accumulo configurations.</p>
+<h3 id="thrift-maximum-frame-size">Thrift maximum frame size</h3>
+<p>Apache Thrift is used as the internal RPC service. <a href="">ACCUMULO-2360</a>
+users to configure the maximum frame size an Accumulo server will read. This 
+prevents non Accumulo client from connecting and causing memory exhaustion.</p>
+<h2 id="notable-bug-fixes">Notable Bug Fixes</h2>
+<p>As with any Apache Accumulo release, we have numerous bug fixes that have been fixed.
+are very subtle and won't affect the common user; however, some notable bugs were resolved

+as a part of 1.5.1 that are rather common.</p>
+<h3 id="failure-of-zookeeper-server-in-quorum-kills-connected-accumulo-services">Failure
of ZooKeeper server in quorum kills connected Accumulo services</h3>
+<p>Apache ZooKeeper provides a number of wonderful features that Accumulo uses to accomplish
+a variety of tasks, most notably a distributed locking service. Typically, multiple ZooKeeper
+servers are run to provide resilience against a certain number of node failures. <a href="">ACCUMULO-1572</a>
+resolves an issue where Accumulo processes would kill themselves when the ZooKeeper server
+were communicating with died instead of failing over to another ZooKeeper server in the quorum.</p>
+<h3 id="monitor-table-state-isnt-updated">Monitor table state isn't updated</h3>
+<p>The Accumulo Monitor contains a column for the state of each table in the Accumulo
+The previous resolution was to restart the Monitor process when it got in this state.
+<a href="">ACCUMULO-1920</a>
resolves an issue where the Monitor would not see updates from ZooKeeper.</p>
+<h3 id="two-locations-for-the-same-extent">Two locations for the same extent</h3>
+<p>The !METADATA table is the brains behind the data storage for each table, tracking
+like which files comprise a Tablet, and which TabletServers are hosting which Tablets. <a
+fixes an issue where the !METADATA table contained multiple locations (hosting server) for
+a single Tablet.</p>
+<h3 id="deadlock-on-metadata-tablet-unload">Deadlock on !METADATA tablet unload</h3>
+<p>Tablets are unloaded, typically, when a shutdown request is issued. <a href="">ACCUMULO-1143</a>
+a potential deadlock issue when a merging-minor compaction is issued to flush in-memory data
+to disk before unloading a Tablet.</p>
+<h3 id="other-notable-fixes">Other notable fixes</h3>
+<li><a href="">ACCUMULO-1800</a>
Fixed deletes made via the Proxy.</li>
+<li><a href="">ACCUMULO-1994</a>
Fixed ranges in the Proxy.</li>
+<li><a href="">ACCUMULO-2234</a>
Fixed offline map reduce over non default HDFS location.</li>
+<li><a href="">ACCUMULO-1615</a>
Fixed <code>service accumulo-tserver stop</code>.</li>
+<li><a href="">ACCUMULO-1876</a>
Fixed issues depending on Accumulo using Apache Ivy.</li>
+<li><a href="">ACCUMULO-2261</a>
Duplicate locations for a Tablet.</li>
+<li><a href="">ACCUMULO-2037</a>
Tablets assigned to previous location.</li>
+<li><a href="">ACCUMULO-1821</a>
Avoid recovery on recovering Tablets.</li>
+<li><a href="">ACCUMULO-2078</a>
Incorrectly computed ACCUMULO_LOG_HOST in example configurations.</li>
+<li><a href="">ACCUMULO-1985</a>
Configuration to bind Monitor on all network interfaces.</li>
+<li><a href="">ACCUMULO-1999</a>
Allow '0' to signify random port for the Master.</li>
+<li><a href="">ACCUMULO-1630</a>
Fixed GC to interpret any IP/hostname.</li>
+<h2 id="known-issues">Known Issues</h2>
+<p>When using Accumulo 1.5 and Hadoop 2, Accumulo will call hsync() on HDFS.
+Calling hsync improves durability by ensuring data is on disk (where other older 
+Hadoop versions might lose data in the face of power failure); however, calling
+hsync frequently does noticably slow writes. A simple work around is to increase 
+the value of the tserver.mutation.queue.max configuration parameter via accumulo-site.xml.</p>
+<p>A value of "4M" is a better recommendation, and memory consumption will increase
+the number of concurrent writers to that TabletServer. For example, a value of 4M with
+50 concurrent writers would equate to approximately 200M of Java heap being used for
+mutation queues.</p>
+<p>For more information, see <a href="">ACCUMULO-1950</a>
and <a href=";page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13915208">this
+<h2 id="documentation">Documentation</h2>
+<p>The following documentation updates were made: </p>
+<li><a href="">ACCUMULO-1956</a></li>
+<li><a href="">ACCUMULO-1428</a></li>
+<li><a href="">ACCUMULO-1687</a></li>
+<li><a href="">ACCUMULO-2141</a></li>
+<li><a href="">ACCUMULO-1946</a></li>
+<li><a href="">ACCUMULO-2223</a></li>
+<li><a href="">ACCUMULO-2226</a></li>
+<li><a href="">ACCUMULO-1470</a></li>
+  </div>
+  <div id="footer">
+    <a alt="Apache Software Foundation" href="">
+      <img id="asf-logo" alt="Apache Software Foundation" src="/images/feather-small.gif"/
+    </a>
+    <div class="copyright">
+      <p>
+        Copyright &copy; 2011-2013 The Apache Software Foundation, Licensed under
+        the <a href="">Apache License, Version
+        <br />
+        Apache Accumulo, Accumulo, Apache, the Apache feather logo, and the Apache Accumulo
+        <br />
+        project logo are trademarks of the <a href="">Apache Software
+      </p>
+    </div> 
+  </div>

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