Author: lidong
Date: Fri Sep 21 03:31:15 2018
New Revision: 1841530
URL: http://svn.apache.org/viewvc?rev=1841530&view=rev
Log:
Add blog for v2.5.0 release
Added:
kylin/site/blog/2018/09/
kylin/site/blog/2018/09/20/
kylin/site/blog/2018/09/20/release-v2.5.0/
kylin/site/blog/2018/09/20/release-v2.5.0/index.html
kylin/site/cn/blog/2018/
kylin/site/cn/blog/2018/09/
kylin/site/cn/blog/2018/09/20/
kylin/site/cn/blog/2018/09/20/release-v2.5.0/
kylin/site/cn/blog/2018/09/20/release-v2.5.0/index.html
Modified:
kylin/site/blog/index.html
kylin/site/cn/download/index.html
kylin/site/development/howto_release.html
kylin/site/download/index.html
kylin/site/feed.xml
Added: kylin/site/blog/2018/09/20/release-v2.5.0/index.html
URL:
http://svn.apache.org/viewvc/kylin/site/blog/2018/09/20/release-v2.5.0/index.html?rev=1841530&view=auto
==============================================================================
--- kylin/site/blog/2018/09/20/release-v2.5.0/index.html (added)
+++ kylin/site/blog/2018/09/20/release-v2.5.0/index.html Fri Sep 21 03:31:15
2018
@@ -0,0 +1,5967 @@
+<!--
+* 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
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+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
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+* distributed under the License is distributed on an "AS IS" BASIS,
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+* See the License for the specific language governing permissions and
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+<!doctype html>
+<html>
+ <!--
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+* "License"); you may not use this file except in compliance
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+ <title>Apache Kylin | Apache Kylin v2.5.0 Release Announcement</title>
+ <meta name="description" content="The Apache Kylin community is pleased to
announce the release of Apache Kylin v2.5.0.">
+ <meta name="author" content="Apache Kylin">
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+ -->
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+ <img class="navbar-logo" width="46"
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+ </ul>
+ </div>
+
+ <!-- Collect the nav links, forms, and other content for toggling -->
+ <div class="navbar-collapse collapse" id="bs-example-navbar-collapse-1">
+
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+<!--
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+ <a href="/docs/install/kylin_aws_emr.html" class="list-group-item-lay
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+ <a href="/docs/tutorial/kylin_sample.html" class="list-group-item-lay
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+ <article class="post-content" >
+ <!--
+* 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
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+-->
+
+<div class="post" style=" padding:2em 4em 4em 4em">
+
+ <header class="post-header">
+ <h1 class="post-title">Apache Kylin v2.5.0 Release Announcement</h1>
+ <p class="post-meta" >Sep 20, 2018 ⢠Shaofeng Shi</p>
+ </header>
+
+ <article class="post-content" >
+ <p>The Apache Kylin community is pleased to announce the release of Apache
Kylin v2.5.0.</p>
+
+<p>Apache Kylin is an open source Distributed Analytics Engine designed to
provide SQL interface and multi-dimensional analysis (OLAP) on Big Data
supporting extremely large datasets.</p>
+
+<p>This is a major release after 2.4.0, including many enhancements. All of
the changes can be found in the <a
href="https://kylin.apache.org/docs/release_notes.html";>release notes</a>. Here
just highlight the major ones:</p>
+
+<h3 id="the-all-in-spark-cubing-engine">The all-in-Spark cubing engine</h3>
+<p>Now Kylinâs Spark engine will run all distributed jobs in Spark,
including fetch distinct dimension values, converting cuboid files to HBase
HFile, merging segments, merging dictionaries, etc. The default configurations
are tuned so the user can get an out-of-box experience. The overall performance
with the previous version is close, but we assume Spark has more room to
improve. The related tasks are KYLIN-3427, KYLIN-3441, KYLIN-3442.</p>
+
+<p>There are also improvements in the job management. Now you can get the job
link on the web console once Spark starts to run. If you discard the job, Kylin
will kill the Spark job to release the resource in time. If Kylin is restarted,
it can resume from the previous job instead of resubmitting a new job. <br />
+### MySQL as Kylin metastore<br />
+In the past, HBase is the only option for Kylin metadata. In some cases, this
is not applicable, for example using replicated HBase cluster for Kylinâs HA
(the replicated HBase is read only). Now we introduce the MySQL metastore to
fulfill such need. This function is in beta now. Check KYLIN-3488 for more.</p>
+
+<h3 id="hybrid-model-web-gui">Hybrid model web GUI</h3>
+<p>Hybrid is an advanced model for compositing multiple Cubes. It can be used
for the Cube schema change issue. This function had no GUI in the past so only
a small portion of Kylin users know it. Now we added the web GUI for it so
everyone can try it.</p>
+
+<h3 id="enable-cube-planner-by-default">Enable Cube planner by default</h3>
+<p>The Cube planner can greatly optimize the cube structure, save the
computing/storage resources and improve the query performance. It was
introduced in v2.3 but is disabled by default. In order to let more users
seeing and trying it, we enable it by default in v2.5. The algorithm will
automatically optimize the cube by your data statistics on the first build.</p>
+
+<h3 id="advanced-segment-pruning">Advanced segment pruning</h3>
+<p>Segment (partition) pruning can efficiently reduce the disk and network
I/O, so to greatly improve the query performance. In the past, Kylin only
prunes segments by the partition columnâs value. If the query doesnât have
the partition column as the filtering condition, the pruning wonât work, all
segments will be scanned.</p>
+
+<p>Now from v2.5, Kylin will record the min/max value for EVERY dimension at
the segment level. Before scanning a segment, it will compare the queryâs
conditions with the min/max index. If not matched, the segment will be skipped.
Check KYLIN-3370 for more.</p>
+
+<h3 id="merge-dictionary-on-yarn">Merge dictionary on YARN</h3>
+
+<p>When segments get merged, their dictionaries also need to be merged. In the
past, the merging happens in Kylinâs JVM, which takes a lot of memory and CPU
resources. In extreme case (if you have a couple of concurrent jobs) it may
crash the Kylin process. Since this, some users have to allocate much more
memory to Kylin job node or run multiple job nodes to balance the workload.</p>
+
+<p>Now from v2.5, Kylin will submit this task to Hadoop MR or Spark, so this
bottleneck can be solved. Check KYLIN-3471 for more.</p>
+
+<h3 id="improve-building-performance-for-reading-global-dictionary">Improve
building performance for reading Global Dictionary</h3>
+
+<p>Global Dictionary is a must for bitmap count distinct. The GD can be very
large if the column has a very high cardinality. In the cube building phase,
Kylin need to translate the non-integer values to integers by the GD. Although
the GD has been split into several slices, the values are often scrambled.
Kylin needs swap in/out the slices into memory repeatedly, which causes the
building slowly.</p>
+
+<p>The enhancement introduces a new step to build a shrunken dictionary for
each data block. Then each task only loads the shrunken dictionary, which is
quite small, so there is no swap in/out any more in the cubing step. Then the
performance can be 3x faster than before. Check KYLIN-3491 for more.</p>
+
+<h3 id="improved-cube-size-estimation-for-topn-count-distinct">Improved cube
size estimation for TOPN, COUNT DISTINCT</h3>
+
+<p>Cube size estimation is used in several steps, such as decides the MR/Spark
job partition number, calculates the HBase region number etc. It will affect
the build performance much. The estimation can be wild when there is COUNT
DISTINCT, TOPN measures because their size is flexible. The incorrect
estimation may cause too many data partitions and then too many tasks. In the
past, users need to tune several parameters to make the size estimation more
close to real size, that is hard to do.</p>
+
+<p>Now Kylin will correct the size estimation automatically based on the
collected data statistics. This can make the estimation much closer with the
real size than before. Check KYLIN-3453 for more.</p>
+
+<h3 id="hadoop-30hbase-20-support">Hadoop 3.0/HBase 2.0 support</h3>
+
+<p>Hadoop 3 and HBase 2 starts to be adopted by many users. Now we provide new
binary packages compiled with the new Hadoop and HBase API. We tested them on
Hortonworks HDP 3.0 and Cloudera CDH 6.0.</p>
+
+<p><strong>Download</strong></p>
+
+<p>To download Apache Kylin v2.5.0 source code or binary package, visit the <a
href="http://kylin.apache.org/download";>download</a> page.</p>
+
+<p><strong>Upgrade</strong></p>
+
+<p>Follow the <a href="/docs/howto/howto_upgrade.html">upgrade guide</a>.</p>
+
+<p><strong>Feedback</strong></p>
+
+<p>If you face issue or question, please send mail to Apache Kylin dev or user
mailing list:Â d...@kylin.apache.org , u...@kylin.apache.org; Before sending,
please make sure you have subscribed the mailing list by dropping an email to
dev-subscr...@kylin.apache.org or user-subscr...@kylin.apache.org.</p>
+
+<p><em>Great thanks to everyone who contributed!</em></p>
+
+ </article>
+
+</div>
+
+
+
+
+
+ </article>
+ </div>
+ </div>
+ <!--
+* 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.
+-->
+
+<footer id="underfooter">
+ <div>
+ <div class="row">
+ <div class="col-md-12 widget">
+ <div class="widget-body">
+ <div class="footer-img">
+ <a href="http://www.apache.org";>
+ <img id="asf-logo" height="78px" alt="Apache
Software Foundation" src="/assets/images/apache_footer.png">
+ </a>
+ </div>
+ <p style="padding-top: 11px;">
+ The contents of this website are © 2015 Apache
Software Foundation under the terms of the
+ <a href="http://www.apache.org/licenses/LICENSE-2.0";>
Apache License v2 </a>.
+ </p>
+ <p style="margin-bottom: 11px;">
+ Apache Kylin and its logo are trademarks of the Apache
Software Foundation.
+ </div>
+
+ </div>
+ </div>
+ </div>
+ <!-- /row of widgets -->
+
+ </div>
+ <div></div>
+
+</footer>
+
+ <script src="/assets/js/jquery-1.9.1.min.js"></script>
+ <script src="/assets/js/bootstrap.min.js"></script>
+ <script src="/assets/js/main.js"></script>
+ </body>
+</html>
+
+
+
+
Modified: kylin/site/blog/index.html
URL:
http://svn.apache.org/viewvc/kylin/site/blog/index.html?rev=1841530&r1=1841529&r2=1841530&view=diff
==============================================================================
--- kylin/site/blog/index.html (original)
+++ kylin/site/blog/index.html Fri Sep 21 03:31:15 2018
@@ -5819,6 +5819,26 @@ var _hmt = _hmt || [];
<div class="col-md-6 col-lg-6 col-xs-12">
+ <a class="blog-card" href="/cn/blog/2018/09/20/release-v2.5.0/">
+ <div class="blog-pic">
+ <img width="20" src="../assets/images/icon_blog_w.png" />
+ </div>
+ <p class="blog-title">Apache Kylin v2.5.0 æ£å¼åå¸</p>
+ <p align="left" class="post-meta">posted: Sep 20, 2018</p>
+ </a>
+ </div>
+
+ <div class="col-md-6 col-lg-6 col-xs-12">
+ <a class="blog-card" href="/blog/2018/09/20/release-v2.5.0/">
+ <div class="blog-pic">
+ <img width="20" src="../assets/images/icon_blog_w.png" />
+ </div>
+ <p class="blog-title">Apache Kylin v2.5.0 Release
Announcement</p>
+ <p align="left" class="post-meta">posted: Sep 20, 2018</p>
+ </a>
+ </div>
+
+ <div class="col-md-6 col-lg-6 col-xs-12">
<a class="blog-card"
href="/blog/2018/07/16/Star-Schema-Benchmark-on-Apache-Kylin/">
<div class="blog-pic">
<img width="20" src="../assets/images/icon_blog_w.png" />
@@ -6029,41 +6049,41 @@ var _hmt = _hmt || [];
</div>
<div class="col-md-6 col-lg-6 col-xs-12">
- <a class="blog-card" href="/blog/2016/05/26/release-v1.5.2/">
+ <a class="blog-card" href="/cn/blog/2016/05/26/release-v1.5.2/">
<div class="blog-pic">
<img width="20" src="../assets/images/icon_blog_w.png" />
</div>
- <p class="blog-title">Apache Kylin v1.5.2 Release
Announcement</p>
+ <p class="blog-title">Apache Kylin v1.5.2 æ£å¼åå¸</p>
<p align="left" class="post-meta">posted: May 26, 2016</p>
</a>
</div>
<div class="col-md-6 col-lg-6 col-xs-12">
- <a class="blog-card" href="/cn/blog/2016/05/26/release-v1.5.2/">
+ <a class="blog-card" href="/blog/2016/05/26/release-v1.5.2/">
<div class="blog-pic">
<img width="20" src="../assets/images/icon_blog_w.png" />
</div>
- <p class="blog-title">Apache Kylin v1.5.2 æ£å¼åå¸</p>
+ <p class="blog-title">Apache Kylin v1.5.2 Release
Announcement</p>
<p align="left" class="post-meta">posted: May 26, 2016</p>
</a>
</div>
<div class="col-md-6 col-lg-6 col-xs-12">
- <a class="blog-card" href="/cn/blog/2016/04/12/release-v1.5.1/">
+ <a class="blog-card" href="/blog/2016/04/12/release-v1.5.1/">
<div class="blog-pic">
<img width="20" src="../assets/images/icon_blog_w.png" />
</div>
- <p class="blog-title">Apache Kylin v1.5.1 æ£å¼åå¸</p>
+ <p class="blog-title">Apache Kylin v1.5.1 Release
Announcement</p>
<p align="left" class="post-meta">posted: Apr 12, 2016</p>
</a>
</div>
<div class="col-md-6 col-lg-6 col-xs-12">
- <a class="blog-card" href="/blog/2016/04/12/release-v1.5.1/">
+ <a class="blog-card" href="/cn/blog/2016/04/12/release-v1.5.1/">
<div class="blog-pic">
<img width="20" src="../assets/images/icon_blog_w.png" />
</div>
- <p class="blog-title">Apache Kylin v1.5.1 Release
Announcement</p>
+ <p class="blog-title">Apache Kylin v1.5.1 æ£å¼åå¸</p>
<p align="left" class="post-meta">posted: Apr 12, 2016</p>
</a>
</div>
@@ -6079,41 +6099,41 @@ var _hmt = _hmt || [];
</div>
<div class="col-md-6 col-lg-6 col-xs-12">
- <a class="blog-card" href="/blog/2016/03/17/release-v1.5.0/">
+ <a class="blog-card" href="/cn/blog/2016/03/17/release-v1.5.0/">
<div class="blog-pic">
<img width="20" src="../assets/images/icon_blog_w.png" />
</div>
- <p class="blog-title">Apache Kylin v1.5.0 Release
Announcement</p>
+ <p class="blog-title">Apache Kylin v1.5.0 æ£å¼åå¸</p>
<p align="left" class="post-meta">posted: Mar 17, 2016</p>
</a>
</div>
<div class="col-md-6 col-lg-6 col-xs-12">
- <a class="blog-card" href="/cn/blog/2016/03/17/release-v1.5.0/">
+ <a class="blog-card" href="/blog/2016/03/17/release-v1.5.0/">
<div class="blog-pic">
<img width="20" src="../assets/images/icon_blog_w.png" />
</div>
- <p class="blog-title">Apache Kylin v1.5.0 æ£å¼åå¸</p>
+ <p class="blog-title">Apache Kylin v1.5.0 Release
Announcement</p>
<p align="left" class="post-meta">posted: Mar 17, 2016</p>
</a>
</div>
<div class="col-md-6 col-lg-6 col-xs-12">
- <a class="blog-card" href="/cn/blog/2016/03/16/release-v1.3.0/">
+ <a class="blog-card" href="/blog/2016/03/16/release-v1.3.0/">
<div class="blog-pic">
<img width="20" src="../assets/images/icon_blog_w.png" />
</div>
- <p class="blog-title">Apache Kylin v1.3.0 æ£å¼åå¸</p>
+ <p class="blog-title">Apache Kylin v1.3.0 Release
Announcement</p>
<p align="left" class="post-meta">posted: Mar 16, 2016</p>
</a>
</div>
<div class="col-md-6 col-lg-6 col-xs-12">
- <a class="blog-card" href="/blog/2016/03/16/release-v1.3.0/">
+ <a class="blog-card" href="/cn/blog/2016/03/16/release-v1.3.0/">
<div class="blog-pic">
<img width="20" src="../assets/images/icon_blog_w.png" />
</div>
- <p class="blog-title">Apache Kylin v1.3.0 Release
Announcement</p>
+ <p class="blog-title">Apache Kylin v1.3.0 æ£å¼åå¸</p>
<p align="left" class="post-meta">posted: Mar 16, 2016</p>
</a>
</div>
@@ -6139,41 +6159,41 @@ var _hmt = _hmt || [];
</div>
<div class="col-md-6 col-lg-6 col-xs-12">
- <a class="blog-card"
href="/cn/blog/2015/12/25/support-powerbi-tableau9/">
+ <a class="blog-card"
href="/blog/2015/12/25/support-powerbi-tableau9/">
<div class="blog-pic">
<img width="20" src="../assets/images/icon_blog_w.png" />
</div>
- <p class="blog-title">Apache Kylinå¢å 对Tableau
9å微软Excel, Power BIçæ¯æ</p>
+ <p class="blog-title">Apache Kylin supports Tableau 9 and MS
Excel, Power BI now</p>
<p align="left" class="post-meta">posted: Dec 25, 2015</p>
</a>
</div>
<div class="col-md-6 col-lg-6 col-xs-12">
- <a class="blog-card"
href="/blog/2015/12/25/support-powerbi-tableau9/">
+ <a class="blog-card"
href="/cn/blog/2015/12/25/support-powerbi-tableau9/">
<div class="blog-pic">
<img width="20" src="../assets/images/icon_blog_w.png" />
</div>
- <p class="blog-title">Apache Kylin supports Tableau 9 and MS
Excel, Power BI now</p>
+ <p class="blog-title">Apache Kylinå¢å 对Tableau
9å微软Excel, Power BIçæ¯æ</p>
<p align="left" class="post-meta">posted: Dec 25, 2015</p>
</a>
</div>
<div class="col-md-6 col-lg-6 col-xs-12">
- <a class="blog-card" href="/cn/blog/2015/12/23/release-v1.2/">
+ <a class="blog-card" href="/blog/2015/12/23/release-v1.2/">
<div class="blog-pic">
<img width="20" src="../assets/images/icon_blog_w.png" />
</div>
- <p class="blog-title">Apache Kylin v1.2 æ£å¼åå¸</p>
+ <p class="blog-title">Apache Kylin v1.2 Release
Announcement</p>
<p align="left" class="post-meta">posted: Dec 23, 2015</p>
</a>
</div>
<div class="col-md-6 col-lg-6 col-xs-12">
- <a class="blog-card" href="/blog/2015/12/23/release-v1.2/">
+ <a class="blog-card" href="/cn/blog/2015/12/23/release-v1.2/">
<div class="blog-pic">
<img width="20" src="../assets/images/icon_blog_w.png" />
</div>
- <p class="blog-title">Apache Kylin v1.2 Release
Announcement</p>
+ <p class="blog-title">Apache Kylin v1.2 æ£å¼åå¸</p>
<p align="left" class="post-meta">posted: Dec 23, 2015</p>
</a>
</div>
![https://www.apache.org/images/SupportApache-small.png"](https://www.apache.org/images/SupportApache-small.png"){kind=link}