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add java 7 warning to solr site 

git-svn-id: https://svn.apache.org/repos/asf/lucene/dev/trunk@1151997 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Uwe Schindler 2011-07-28 20:50:00 +00:00
parent 34b9ab2b5a
commit 1c2bc5af93
13 changed files with 102 additions and 25 deletions
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@ -66,6 +66,42 @@ customization is required.
</section>
<section id="news">
<title>News</title>
<section><title>28 July 2011 - WARNING: Index corruption and crashes in Apache Lucene Core / Apache Solr with Java 7</title>
<p>Oracle released <a href="http://www.oracle.com/technetwork/java/javase/downloads/index.html">Java 7</a> today.
Unfortunately it contains hotspot compiler optimizations, which miscompile some loops.
This can affect code of several Apache projects. Sometimes JVMs only crash, but in several cases,
results calculated can be incorrect, leading to bugs in applications
(see Hotspot bugs <a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7070134">7070134</a>,
<a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7044738">7044738</a>,
<a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7068051">7068051</a>).</p>
<p><strong>Apache Lucene Core</strong> and <strong>Apache Solr</strong> are two Apache projects,
which are affected by these bugs, namely all versions released until today.
Solr users with the default configuration will have
Java crashing with <code>SIGSEGV</code> as soon as they start to index documents, as one
affected part is the well-known Porter stemmer
(see <a href="https://issues.apache.org/jira/browse/LUCENE-3335">LUCENE-3335</a>).
Other loops in Lucene may be miscompiled, too, leading to index corruption
(especially on Lucene trunk with pulsing codec; other loops may be
affected, too - <a href="https://issues.apache.org/jira/browse/LUCENE-3346">LUCENE-3346</a>).</p>
<p>These problems were detected only 5 days before the official Java 7 release,
so Oracle had no time to fix those bugs, affecting also many more applications.
In response to our questions, they proposed to include the fixes into service
release u2 (eventually into service release u1, see
<a href="http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2011-July/005971.html">this mail</a>).
<strong>This means you cannot use Apache Lucene/Solr with Java 7 releases before Update 2!</strong>
If you do, please don't open bug reports, it is not the committers' fault!
At least disable loop optimizations using the <code>-XX:-UseLoopPredicate</code> JVM option
to not risk index corruptions.</p>
<p><em>Please note:</em> Also Java 6 users are affected, if they use one of those
JVM options, which are <strong>not</strong> enabled by default: <code>-XX:+OptimizeStringConcat</code>
or <code>-XX:+AggressiveOpts</code>.</p>
<p>It is strongly recommended not to use any hotspot optimization switches in any Java
version without extensive testing!</p>
<p>In case you upgrade to Java 7, remember that you may have to reindex, as the unicode
version shipped with Java 7 changed and tokenization behaves differently
(e.g. lowercasing). For more information, read <code>JRE_VERSION_MIGRATION.txt</code>
in your distribution package!</p>
</section>
<section>
<title>July 2011 - Solr 3.3 Released</title>
<p>The Lucene PMC is pleased to announce the release of <a href="http://www.apache.org/dyn/closer.cgi/lucene/solr">Apache Solr 3.3</a>!

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@ -232,6 +232,9 @@ document.write("Last Published: " + document.lastModified);
<a href="#news">News</a>
<ul class="minitoc">
<li>
<a href="#28+July+2011+-+WARNING%3A+Index+corruption+and+crashes+in+Apache+Lucene+Core+%2F+Apache+Solr+with+Java+7">28 July 2011 - WARNING: Index corruption and crashes in Apache Lucene Core / Apache Solr with Java 7</a>
</li>
<li>
<a href="#July+2011+-+Solr+3.3+Released">July 2011 - Solr 3.3 Released</a>
</li>
<li>
@ -355,7 +358,45 @@ customization is required.
<a name="N1005A"></a><a name="news"></a>
<h2 class="boxed">News</h2>
<div class="section">
<a name="N10060"></a><a name="July+2011+-+Solr+3.3+Released"></a>
<a name="N10060"></a><a name="28+July+2011+-+WARNING%3A+Index+corruption+and+crashes+in+Apache+Lucene+Core+%2F+Apache+Solr+with+Java+7"></a>
<h3 class="boxed">28 July 2011 - WARNING: Index corruption and crashes in Apache Lucene Core / Apache Solr with Java 7</h3>
<p>Oracle released <a href="http://www.oracle.com/technetwork/java/javase/downloads/index.html">Java 7</a> today.
Unfortunately it contains hotspot compiler optimizations, which miscompile some loops.
This can affect code of several Apache projects. Sometimes JVMs only crash, but in several cases,
results calculated can be incorrect, leading to bugs in applications
(see Hotspot bugs <a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7070134">7070134</a>,
<a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7044738">7044738</a>,
<a href="http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7068051">7068051</a>).</p>
<p>
<strong>Apache Lucene Core</strong> and <strong>Apache Solr</strong> are two Apache projects,
which are affected by these bugs, namely all versions released until today.
Solr users with the default configuration will have
Java crashing with <span class="codefrag">SIGSEGV</span> as soon as they start to index documents, as one
affected part is the well-known Porter stemmer
(see <a href="https://issues.apache.org/jira/browse/LUCENE-3335">LUCENE-3335</a>).
Other loops in Lucene may be miscompiled, too, leading to index corruption
(especially on Lucene trunk with pulsing codec; other loops may be
affected, too - <a href="https://issues.apache.org/jira/browse/LUCENE-3346">LUCENE-3346</a>).</p>
<p>These problems were detected only 5 days before the official Java 7 release,
so Oracle had no time to fix those bugs, affecting also many more applications.
In response to our questions, they proposed to include the fixes into service
release u2 (eventually into service release u1, see
<a href="http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2011-July/005971.html">this mail</a>).
<strong>This means you cannot use Apache Lucene/Solr with Java 7 releases before Update 2!</strong>
If you do, please don't open bug reports, it is not the committers' fault!
At least disable loop optimizations using the <span class="codefrag">-XX:-UseLoopPredicate</span> JVM option
to not risk index corruptions.</p>
<p>
<em>Please note:</em> Also Java 6 users are affected, if they use one of those
JVM options, which are <strong>not</strong> enabled by default: <span class="codefrag">-XX:+OptimizeStringConcat</span>
or <span class="codefrag">-XX:+AggressiveOpts</span>.</p>
<p>It is strongly recommended not to use any hotspot optimization switches in any Java
version without extensive testing!</p>
<p>In case you upgrade to Java 7, remember that you may have to reindex, as the unicode
version shipped with Java 7 changed and tokenization behaves differently
(e.g. lowercasing). For more information, read <span class="codefrag">JRE_VERSION_MIGRATION.txt</span>
in your distribution package!</p>
<a name="N100B0"></a><a name="July+2011+-+Solr+3.3+Released"></a>
<h3 class="boxed">July 2011 - Solr 3.3 Released</h3>
<p>The Lucene PMC is pleased to announce the release of <a href="http://www.apache.org/dyn/closer.cgi/lucene/solr">Apache Solr 3.3</a>!
</p>
@ -385,7 +426,7 @@ customization is required.
</ul>
<p>See the <a href="http://svn.apache.org/repos/asf/lucene/dev/tags/lucene_solr_3_3/solr/CHANGES.txt">release notes</a> for a more complete list of all the new features, improvements, and bugfixes.
</p>
<a name="N10094"></a><a name="May+2011+-+Solr+3.2+Released"></a>
<a name="N100E4"></a><a name="May+2011+-+Solr+3.2+Released"></a>
<h3 class="boxed">May 2011 - Solr 3.2 Released</h3>
<p>The Lucene PMC is pleased to announce the release of <a href="http://www.apache.org/dyn/closer.cgi/lucene/solr">Apache Solr 3.2</a>!
</p>
@ -411,7 +452,7 @@ customization is required.
</ul>
<p>See the <a href="http://svn.apache.org/repos/asf/lucene/dev/tags/lucene_solr_3_2/solr/CHANGES.txt">release notes</a> for a more complete list of all the new features, improvements, and bugfixes.
</p>
<a name="N100C1"></a><a name="March+2011+-+Solr+3.1+Released"></a>
<a name="N10111"></a><a name="March+2011+-+Solr+3.1+Released"></a>
<h3 class="boxed">March 2011 - Solr 3.1 Released</h3>
<p>The Lucene PMC is pleased to announce the release of <a href="http://www.apache.org/dyn/closer.cgi/lucene/solr">Apache Solr 3.1</a>!
</p>
@ -459,7 +500,7 @@ customization is required.
</ul>
<p>See the <a href="http://svn.apache.org/repos/asf/lucene/dev/tags/lucene_solr_3_1/solr/CHANGES.txt">release notes</a> for a more complete list of all the new features, improvements, and bugfixes.
</p>
<a name="N1012C"></a><a name="25+June+2010+-+Solr+1.4.1+Released"></a>
<a name="N1017C"></a><a name="25+June+2010+-+Solr+1.4.1+Released"></a>
<h3 class="boxed">25 June 2010 - Solr 1.4.1 Released</h3>
<p>
Solr 1.4.1 has been released and is now available for public
@ -472,7 +513,7 @@ customization is required.
See the <a href="http://svn.apache.org/repos/asf/lucene/solr/tags/release-1.4.1/CHANGES.txt">release notes</a>
for more details.
</p>
<a name="N10141"></a><a name="7+May+2010+-+Apache+Lucene+Eurocon+2010+Coming+to+Prague+May+18-21"></a>
<a name="N10191"></a><a name="7+May+2010+-+Apache+Lucene+Eurocon+2010+Coming+to+Prague+May+18-21"></a>
<h3 class="boxed">7 May 2010 - Apache Lucene Eurocon 2010 Coming to Prague May 18-21</h3>
<p>
On May 18th to the 21st Prague will play host to the first
@ -544,7 +585,7 @@ customization is required.
</li>
</ul>
<a name="N1018D"></a><a name="10+November+2009+-+Solr+1.4+Released"></a>
<a name="N101DD"></a><a name="10+November+2009+-+Solr+1.4+Released"></a>
<h3 class="boxed">10 November 2009 - Solr 1.4 Released</h3>
<p>
Solr 1.4 has been released and is now available for public <a href="http://www.apache.org/dyn/closer.cgi/lucene/solr/">download</a>!
@ -576,7 +617,7 @@ customization is required.
</ul>
<p>See the <a href="http://svn.apache.org/repos/asf/lucene/solr/tags/release-1.4.0/CHANGES.txt">release notes</a> for more details.
</p>
<a name="N101BD"></a><a name="20+August+2009+-+Solr%27s+first+book+is+published%21"></a>
<a name="N1020D"></a><a name="20+August+2009+-+Solr%27s+first+book+is+published%21"></a>
<h3 class="boxed">20 August 2009 - Solr's first book is published!</h3>
<p>
@ -591,7 +632,7 @@ customization is required.
</p>
<p>Finally, this book covers various deployment considerations to include indexing strategies and performance-oriented configuration that will enable you to scale Solr to meet the needs of a high-volume site.
</p>
<a name="N101DD"></a><a name="18+August+2009+-+Lucene+at+US+ApacheCon"></a>
<a name="N1022D"></a><a name="18+August+2009+-+Lucene+at+US+ApacheCon"></a>
<h3 class="boxed">18 August 2009 - Lucene at US ApacheCon</h3>
<p>
@ -667,7 +708,7 @@ Be sure not to miss:
Search</a> - Jason Rutherglen @ 15:00</li>
</ul>
<a name="N10251"></a><a name="09+February+2009+-+Lucene+at+ApacheCon+Europe+2009+in+Amsterdam"></a>
<a name="N102A1"></a><a name="09+February+2009+-+Lucene+at+ApacheCon+Europe+2009+in+Amsterdam"></a>
<h3 class="boxed">09 February 2009 - Lucene at ApacheCon Europe 2009 in Amsterdam</h3>
<p>
@ -705,23 +746,23 @@ Be sure not to miss:
</ul>
<a name="N1029A"></a><a name="19+December+2008+-+Solr+Logo+Contest+Results"></a>
<a name="N102EA"></a><a name="19+December+2008+-+Solr+Logo+Contest+Results"></a>
<h3 class="boxed">19 December 2008 - Solr Logo Contest Results</h3>
<p>Many great logos were submitted, but only one could be chosen. Congratulations Michiel,
the creator of the winning logo that is proudly displayed at the top of this page.
</p>
<a name="N102A3"></a><a name="03+October+2008+-+Solr+Logo+Contest"></a>
<a name="N102F3"></a><a name="03+October+2008+-+Solr+Logo+Contest"></a>
<h3 class="boxed">03 October 2008 - Solr Logo Contest</h3>
<p>By popular demand, Solr is holding a contest to pick a new Solr logo. Details about how to submit an entry can be found <a href="http://wiki.apache.org/solr/LogoContest">on the wiki</a>. The Deadline for submissions is November 20th, 2008 @ 11:59PM GMT.
</p>
<a name="N102B0"></a><a name="15+September+2008+-+Solr+1.3.0+Available"></a>
<a name="N10300"></a><a name="15+September+2008+-+Solr+1.3.0+Available"></a>
<h3 class="boxed">15 September 2008 - Solr 1.3.0 Available</h3>
<p>Solr 1.3.0 is available for public download. This version contains many enhancements and bug fixes, including distributed search capabilities,
Lucene 2.3.x performance improvements and many others.
</p>
<p>See the <a href="http://svn.apache.org/repos/asf/lucene/solr/tags/release-1.3.0/CHANGES.txt">release notes</a> for more details. Download is
available from a <a href="http://www.apache.org/dyn/closer.cgi/lucene/solr/">Apache Mirror</a>.</p>
<a name="N102C4"></a><a name="28+August+2008+-+Lucene%2FSolr+at+ApacheCon+New+Orleans"></a>
<a name="N10314"></a><a name="28+August+2008+-+Lucene%2FSolr+at+ApacheCon+New+Orleans"></a>
<h3 class="boxed">28 August 2008 - Lucene/Solr at ApacheCon New Orleans</h3>
<p>
@ -743,7 +784,7 @@ Be sure not to miss:
<li>An <a href="http://us.apachecon.com/c/acus2008/schedule/2008/11/05">entire day of Lucene sessions</a> on November 5th</li>
</ul>
<a name="N102F2"></a><a name="03+September+2007+-+Lucene+at+ApacheCon+Atlanta"></a>
<a name="N10342"></a><a name="03+September+2007+-+Lucene+at+ApacheCon+Atlanta"></a>
<h3 class="boxed">03 September 2007 - Lucene at ApacheCon Atlanta</h3>
<p>
<a href="http://www.us.apachecon.com"><img alt="ApacheCon US logo" class="float-right" src="http://www.apache.org/ads/ApacheCon/2007-usa-125x125.png"></a>
@ -763,7 +804,7 @@ Be sure not to miss:
<li>November 16, 4:00 pm: <a href="http://us.apachecon.com/us2007/program/talk/2017"> Advanced Indexing Techniques with Apache Lucene</a> by Michael Busch. Information on payloads and advanced indexing techniques.</li>
</ul>
<a name="N1032B"></a><a name="06+June+2007%3A+Release+1.2+available"></a>
<a name="N1037B"></a><a name="06+June+2007%3A+Release+1.2+available"></a>
<h3 class="boxed">06 June 2007: Release 1.2 available</h3>
<p>
This is the first release since Solr graduated from the Incubator,
@ -773,40 +814,40 @@ Be sure not to miss:
and more flexible plugins.
</p>
<p>See the <a href="http://svn.apache.org/repos/asf/lucene/solr/tags/release-1.2.0/CHANGES.txt">release notes</a> for more details.</p>
<a name="N1033C"></a><a name="17+January+2007%3A+Solr+graduates+from+Incubator"></a>
<a name="N1038C"></a><a name="17+January+2007%3A+Solr+graduates+from+Incubator"></a>
<h3 class="boxed">17 January 2007: Solr graduates from Incubator</h3>
<p>
Solr has graduated from the Apache Incubator, and is now a sub-project of Lucene.
</p>
<a name="N10346"></a><a name="22+December+2006%3A+Release+1.1.0+available"></a>
<a name="N10396"></a><a name="22+December+2006%3A+Release+1.1.0+available"></a>
<h3 class="boxed">22 December 2006: Release 1.1.0 available</h3>
<p>
This is the first release since Solr joined the Incubator, and brings
many new features and performance optimizations including highlighting,
faceted search, and JSON/Python/Ruby response formats.
</p>
<a name="N10350"></a><a name="15+August+2006%3A+Solr+at+ApacheCon+US"></a>
<a name="N103A0"></a><a name="15+August+2006%3A+Solr+at+ApacheCon+US"></a>
<h3 class="boxed">15 August 2006: Solr at ApacheCon US</h3>
<p>Chris Hostetter will be presenting
<strong><a href="http://www.apachecon.com/2006/US/html/sessions.html#FR26">"Faceted Searching With Apache Solr"</a></strong>
at ApacheCon US 2006, on October 13th at 4:30pm.
See the <a href="http://www.us.apachecon.com/">ApacheCon</a> website for more details.
</p>
<a name="N10363"></a><a name="21+April+2006%3A+Solr+at+ApacheCon"></a>
<a name="N103B3"></a><a name="21+April+2006%3A+Solr+at+ApacheCon"></a>
<h3 class="boxed">21 April 2006: Solr at ApacheCon</h3>
<p>Yonik Seeley will be presenting
<strong>"Apache Solr, a Full-Text Search Server based on Lucene"</strong>
at ApacheCon Europe 2006, on June 29th at 5:30pm.
See the <a href="http://www.eu.apachecon.com/">ApacheCon</a> website for more details.
</p>
<a name="N10374"></a><a name="21+February+2006%3A+nightly+builds"></a>
<a name="N103C4"></a><a name="21+February+2006%3A+nightly+builds"></a>
<h3 class="boxed">21 February 2006: nightly builds</h3>
<p>Solr now has nightly builds. This automatically creates a
<a href="http://people.apache.org/builds/lucene/solr/nightly/">downloadable version of Solr every
night</a>. All unit tests must pass, or a message is sent to
the developers mailing list and no new version is created. This
also updates the <a href="api/index.html">javadoc</a>.</p>
<a name="N10386"></a><a name="17+January+2006%3A+Solr+Joins+Apache+Incubator"></a>
<a name="N103D6"></a><a name="17+January+2006%3A+Solr+Joins+Apache+Incubator"></a>
<h3 class="boxed">17 January 2006: Solr Joins Apache Incubator</h3>
<p>Solr, a search server based on Lucene, has been accepted into the Apache Incubator.
Solr was originally developed by CNET Networks, and is widely used within CNET

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@ -163,4 +163,4 @@ p {
.codefrag {
font-family: "Courier New", Courier, monospace;
font-size: 110%;
}
}

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@ -51,4 +51,4 @@ a:link, a:visited {
acronym {
border: 0;
}
}

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@ -172,4 +172,4 @@ a:hover { color:#6587ff}
}

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@ -584,4 +584,4 @@ p.instruction {
list-style-image: url('../images/instruction_arrow.png');
list-style-position: outside;
margin-left: 2em;
}
}

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