Author: buildbot
Date: Thu Mar 6 20:37:49 2014
New Revision: 900335
Log:
Staging update by buildbot for accumulo
Added:
websites/staging/accumulo/trunk/content/release_notes/1.5.1.html
Removed:
websites/staging/accumulo/trunk/content/release_notes/release_notes.html
Modified:
websites/staging/accumulo/trunk/content/ (props changed)
websites/staging/accumulo/trunk/content/downloads/index.html
Propchange: websites/staging/accumulo/trunk/content/
------------------------------------------------------------------------------
--- cms:source-revision (original)
+++ cms:source-revision Thu Mar 6 20:37:49 2014
@@ -1 +1 @@
-1574980
+1575035
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™ release is version 1.5.1. See the
<a
href="https://git-wip-us.apache.org/repos/asf?p=accumulo.git;a=blob_plain;f=CHANGES;hb=3478f71ae888f8d73aaa93837319a6dbb4ba0c8a";
title="1.5.1 CHANGES">CHANGES</a>.<br />
+<p>The most recent Apache Accumulo™ release is version 1.5.1. See the
<a href="/release_notes/1.5.1.html">release notes</a> and <a
href="https://git-wip-us.apache.org/repos/asf?p=accumulo.git;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="http://www.apache.org/info/verification.html";
title="Verify">procedures</a> using these <a
href="http://www.apache.org/dist/accumulo/KEYS"; title="KEYS">KEYS</a>.<br />
For convenience, <a
href="http://www.apache.org/dist/accumulo/1.5.1/MD5SUM";>MD5</a> and <a
href="http://www.apache.org/dist/accumulo/1.5.1/SHA1SUM";>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"
"http://www.w3.org/TR/html4/loose.dtd";>
+<html>
+<head>
+<!--
+ 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.
+-->
+ <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', 'apache.org']);
+ _gaq.push(['_setAllowLinker', true]);
+ _gaq.push(['_trackPageview']);
+
+ (function() {
+ var ga = document.createElement('script'); ga.type = 'text/javascript';
ga.async = true;
+ ga.src = ('https:' == document.location.protocol ? 'https://ssl' :
'http://www') + '.google-analytics.com/ga.js';
+ var s = document.getElementsByTagName('script')[0];
s.parentNode.insertBefore(ga, s);
+ })();
+
+ </script>
+
+
+</head>
+
+<body>
+ <div id="banner">
+ </div>
+
+ <div id="navigation">
+ <h1 id="project">Project</h1>
+<ul>
+<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="http://www.apache.org/licenses/LICENSE-2.0";>License</a></li>
+</ul>
+<h1 id="community">Community</h1>
+<ul>
+<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>
+</ul>
+<h1 id="development">Development</h1>
+<ul>
+<li><a href="/source.html">Source & 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="https://issues.apache.org/jira/browse/accumulo";>Issues</a></li>
+<li><a href="https://builds.apache.org/view/A-D/view/Accumulo/";>Builds</a></li>
+</ul>
+<h1 id="documentation">Documentation</h1>
+<ul>
+<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 & Other Links</a></li>
+<li><a href="/glossary.html">Glossary</a></li>
+</ul>
+<h1 id="asf-links">ASF links</h1>
+<ul>
+<li><a href="http://www.apache.org";>Apache Software Foundation</a></li>
+<li><a
href="http://www.apache.org/foundation/sponsorship.html";>Sponsorship</a></li>
+<li><a href="http://www.apache.org/security/";>Security</a></li>
+<li><a href="http://www.apache.org/foundation/thanks.html";>Thanks</a></li>
+</ul>
+ </div>
+
+ <div id="bannertext">
+ <img id="logo" alt="Apache Accumulo"
src="/images/accumulo-logo.png"/>™
+ </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="https://issues.apache.org/jira/browse/ACCUMULO-2128";>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 processes</h3>
+<p>While Hadoop <a href="http://wiki.apache.org/hadoop/HadoopIPv6";>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="https://issues.apache.org/jira/browse/ACCUMULO-2262";>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="https://issues.apache.org/jira/browse/ACCUMULO-1933";>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="https://issues.apache.org/jira/browse/ACCUMULO-2360";>ACCUMULO-2360</a>
allows
+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. Most
+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="https://issues.apache.org/jira/browse/ACCUMULO-1572";>ACCUMULO-1572</a>
+resolves an issue where Accumulo processes would kill themselves when the
ZooKeeper server they
+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 instance.
+The previous resolution was to restart the Monitor process when it got in this
state.
+<a
href="https://issues.apache.org/jira/browse/ACCUMULO-1920";>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 information
+like which files comprise a Tablet, and which TabletServers are hosting which
Tablets. <a
href="https://issues.apache.org/jira/browse/ACCUMULO-2057";>ACCUMULO-2057</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="https://issues.apache.org/jira/browse/ACCUMULO-1143";>ACCUMULO-1143</a>
resolves
+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>
+<ul>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-1800";>ACCUMULO-1800</a>
Fixed deletes made via the Proxy.</li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-1994";>ACCUMULO-1994</a>
Fixed ranges in the Proxy.</li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-2234";>ACCUMULO-2234</a>
Fixed offline map reduce over non default HDFS location.</li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-1615";>ACCUMULO-1615</a>
Fixed <code>service accumulo-tserver stop</code>.</li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-1876";>ACCUMULO-1876</a>
Fixed issues depending on Accumulo using Apache Ivy.</li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-2261";>ACCUMULO-2261</a>
Duplicate locations for a Tablet.</li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-2037";>ACCUMULO-2037</a>
Tablets assigned to previous location.</li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-1821";>ACCUMULO-1821</a>
Avoid recovery on recovering Tablets.</li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-2078";>ACCUMULO-2078</a>
Incorrectly computed ACCUMULO_LOG_HOST in example configurations.</li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-1985";>ACCUMULO-1985</a>
Configuration to bind Monitor on all network interfaces.</li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-1999";>ACCUMULO-1999</a>
Allow '0' to signify random port for the Master.</li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-1630";>ACCUMULO-1630</a>
Fixed GC to interpret any IP/hostname.</li>
+</ul>
+<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 by
+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="https://issues.apache.org/jira/browse/ACCUMULO-1950";>ACCUMULO-1950</a>
and <a
href="https://issues.apache.org/jira/browse/ACCUMULO-1905?focusedCommentId=13915208&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13915208";>this
comment</a>.</p>
+<h2 id="documentation">Documentation</h2>
+<p>The following documentation updates were made: </p>
+<ul>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-1956";>ACCUMULO-1956</a></li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-1428";>ACCUMULO-1428</a></li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-1687";>ACCUMULO-1687</a></li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-2141";>ACCUMULO-2141</a></li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-1946";>ACCUMULO-1946</a></li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-2223";>ACCUMULO-2223</a></li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-2226";>ACCUMULO-2226</a></li>
+<li><a
href="https://issues.apache.org/jira/browse/ACCUMULO-1470";>ACCUMULO-1470</a></li>
+</ul>
+ </div>
+
+ <div id="footer">
+ <a alt="Apache Software Foundation" href="http://www.apache.org";>
+ <img id="asf-logo" alt="Apache Software Foundation"
src="/images/feather-small.gif"/ width="100">
+ </a>
+ <div class="copyright">
+ <p>
+ Copyright © 2011-2013 The Apache Software Foundation, Licensed
under
+ the <a href="http://www.apache.org/licenses/LICENSE-2.0";>Apache
License, Version 2.0</a>.
+ <br />
+ Apache Accumulo, Accumulo, Apache, the Apache feather logo, and the
Apache Accumulo
+ <br />
+ project logo are trademarks of the <a
href="http://www.apache.org";>Apache Software Foundation</a>.
+ </p>
+ </div>
+ </div>
+
+</body>
+</html>
