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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. +--> + +<div class="post" style=" padding:2em 4em 4em 4em"> + + <header class="post-header"> + <h1 class="post-title">Apache Kylin v2.5.0 æ£å¼åå¸</h1> + <p class="post-meta" >Sep 20, 2018 ⢠Shaofeng Shi</p> + </header> + + <article class="post-content" > + <p>è¿æ¥Apache Kylin 社åºå¾é«å ´å°å®£å¸ï¼Apache Kylin 2.5.0 æ£å¼åå¸ã</p> + +<p>Apache Kylin æ¯ä¸ä¸ªå¼æºçåå¸å¼åæå¼æï¼æ¨å¨ä¸ºæ大æ°æ®éæä¾ SQL æ¥å£åå¤ç»´åæï¼OLAPï¼çè½åã</p> + +<p>è¿æ¯ç»§2.4.0 åçä¸ä¸ªæ°åè½çæ¬ã该çæ¬å¼å ¥äºå¾å¤æä»·å¼çæ¹è¿ï¼å®æ´çæ¹å¨å表请åè§<a href="https://kylin.apache.org/docs/release_notes.html";>release notes</a>ï¼è¿éæä¸äºä¸»è¦æ¹è¿å说æï¼</p> + +<h3 id="all-in-spark--cubing-">All-in-Spark ç Cubing å¼æ</h3> +<p>Kylin ç Spark å¼æå°ä½¿ç¨ Spark è¿è¡ cube 计ç®ä¸çææåå¸å¼ä½ä¸ï¼å æ¬è·åå个维度çä¸åå¼ï¼å° cuboid æ件转æ¢ä¸º HBase HFileï¼å并 segmentï¼å并è¯å ¸çãé»è®¤ç Spark é ç½®ä¹ç»è¿ä¼åï¼ä½¿å¾ç¨æ·å¯ä»¥è·å¾å¼ç®±å³ç¨çä½éªãç¸å ³å¼åä»»å¡æ¯ KYLIN-3427, KYLIN-3441, KYLIN-3442.</p> + +<p>Spark ä»»å¡ç®¡çä¹æææ¹è¿ï¼ä¸æ¦ Spark ä»»å¡å¼å§è¿è¡ï¼æ¨å°±å¯ä»¥å¨Webæ§å¶å°ä¸è·å¾ä½ä¸é¾æ¥ï¼å¦ææ¨ä¸¢å¼è¯¥ä½ä¸ï¼Kylin å°ç«å»ç»æ¢ Spark ä½ä¸ä»¥åæ¶éæ¾èµæºï¼å¦æéæ°å¯å¨ Kylinï¼å®å¯ä»¥ä»ä¸ä¸ä¸ªä½ä¸æ¢å¤ï¼èä¸æ¯éæ°æ交æ°ä½ä¸.</p> + +<h3 id="mysql--kylin-">MySQL å Kylin å æ°æ®çåå¨</h3> +<p>å¨è¿å»ï¼HBase æ¯ Kylin å æ°æ®åå¨çå¯ä¸éæ©ã å¨æäºæ åµä¸ HBaseä¸éç¨ï¼ä¾å¦ä½¿ç¨å¤ä¸ª HBase é群æ¥ä¸º Kylin æä¾è·¨åºåçé«å¯ç¨ï¼è¿éå¤å¶ç HBase é群æ¯åªè¯»çï¼æ以ä¸è½åå æ°æ®åå¨ãç°å¨æ们å¼å ¥äº MySQL Metastore 以满足è¿ç§éæ±ãæ¤åè½ç°å¨å¤äºæµè¯é¶æ®µãæ´å¤å 容åè§ KYLIN-3488ã</p> + +<h3 id="hybrid-model-">Hybrid model å¾å½¢çé¢</h3> +<p>Hybrid æ¯ä¸ç§ç¨äºç»è£ å¤ä¸ª cube çé«çº§æ¨¡åã å®å¯ç¨äºæ»¡è¶³ cube ç schema è¦åçæ¹åçæ åµãè¿ä¸ªåè½è¿å»æ²¡æå¾å½¢çé¢ï¼å æ¤åªæä¸å°é¨åç¨æ·ç¥éå®ãç°å¨æä»¬å¨ Web çé¢ä¸å¼å¯äºå®ï¼ä»¥ä¾¿æ´å¤ç¨æ·å¯ä»¥å°è¯ã</p> + +<h3 id="cube-planner">é»è®¤å¼å¯ Cube planner</h3> +<p>Cube planner å¯ä»¥æ大å°ä¼å cube ç»æï¼åå°æ建ç cuboid æ°éï¼ä»èèç计ç®/åå¨èµæºå¹¶æé«æ¥è¯¢æ§è½ãå®æ¯å¨v2.3ä¸å¼å ¥çï¼ä½é»è®¤æ åµä¸æ²¡æå¼å¯ã为äºè®©æ´å¤ç¨æ·çå°å¹¶å°è¯å®ï¼æ们é»è®¤å¨v2.5ä¸å¯ç¨å®ã ç®æ³å°å¨ç¬¬ä¸æ¬¡æ建 segment çæ¶åï¼æ ¹æ®æ°æ®ç»è®¡èªå¨ä¼å cuboid éå.</p> + +<h3 id="segment-">æ¹è¿ç Segment åªæ</h3> +<p>Segmentï¼ååºï¼ä¿®åªå¯ä»¥ææå°åå°ç£çåç½ç»I / Oï¼å æ¤å¤§å¤§æé«äºæ¥è¯¢æ§è½ã è¿å»ï¼Kylin åªæååºå (partition date column) çå¼è¿è¡ segment çä¿®åªã å¦ææ¥è¯¢ä¸æ²¡æå°ååºåä½ä¸ºè¿æ»¤æ¡ä»¶ï¼é£ä¹ä¿®åªå°ä¸èµ·ä½ç¨ï¼ä¼æ«æææsegmentã.<br /> +ç°å¨ä»v2.5å¼å§ï¼Kylin å°å¨ segment 级å«è®°å½æ¯ä¸ªç»´åº¦çæå°/æ大å¼ã å¨æ«æ segment ä¹åï¼ä¼å°æ¥è¯¢çæ¡ä»¶ä¸æå°/æ大索å¼è¿è¡æ¯è¾ã å¦æä¸å¹é ï¼å°è·³è¿è¯¥ segmentã æ£æ¥KYLIN-3370äºè§£æ´å¤ä¿¡æ¯ã</p> + +<h3 id="yarn-">å¨ YARN ä¸å并åå ¸</h3> +<p>å½ segment å并æ¶ï¼å®ä»¬çè¯å ¸ä¹éè¦å并ãå¨è¿å»ï¼åå ¸å并åçå¨ Kylin ç JVM ä¸ï¼è¿éè¦ä½¿ç¨å¤§éçæ¬å°å åå CPU èµæºã å¨æ端æ åµä¸ï¼å¦ææå 个并åä½ä¸ï¼ï¼å¯è½ä¼å¯¼è´ Kylin è¿ç¨å´©æºã å æ¤ï¼ä¸äºç¨æ·ä¸å¾ä¸ä¸º Kylin ä»»å¡èç¹åé æ´å¤å åï¼æè¿è¡å¤ä¸ªä»»å¡èç¹ä»¥å¹³è¡¡å·¥ä½è´è½½ã<br /> +ç°å¨ä»v2.5å¼å§ï¼Kylin å°æè¿é¡¹ä»»å¡æäº¤ç» Hadoop MapReduce å Sparkï¼è¿æ ·å°±å¯ä»¥è§£å³è¿ä¸ªç¶é¢é®é¢ã æ¥çKYLIN-3471äºè§£æ´å¤ä¿¡æ¯.</p> + +<h3 id="cube-">æ¹è¿ä½¿ç¨å ¨å±åå ¸ç cube æ建æ§è½</h3> +<p>å ¨å±åå ¸ (Global Dictionary) æ¯ bitmap 精确å»é计æ°çå¿ è¦æ¡ä»¶ãå¦æå»éåå ·æé常é«çåºæ°ï¼å GD å¯è½é常大ãå¨ cube æ建é¶æ®µï¼Kylin éè¦éè¿ GD å°éæ´æ°å¼è½¬æ¢ä¸ºæ´æ°ã尽管 GD 已被åæå¤ä¸ªåçï¼å¯ä»¥åå¼å è½½å°å åï¼ä½æ¯ç±äºå»éåçå¼æ¯ä¹±åºçãKylin éè¦åå¤è½½å ¥åè½½åº(swap in/out)åçï¼è¿ä¼å¯¼è´æ建任å¡é常ç¼æ ¢ã<br /> +该å¢å¼ºåè½å¼å ¥äºä¸ä¸ªæ°æ¥éª¤ï¼ä¸ºæ¯ä¸ªæ°æ®åä»å ¨å±åå ¸ä¸æ建ä¸ä¸ªç¼©å°çåå ¸ã éåæ¯ä¸ªä»»å¡åªéè¦å 载缩å°çåå ¸ï¼ä»èé¿å é¢ç¹çè½½å ¥åè½½åºãæ§è½å¯ä»¥æ¯ä»¥åå¿«3åãæ¥ç KYLIN-3491 äºè§£æ´å¤ä¿¡æ¯.</p> + +<h3 id="topn-count-distinct--cube-">æ¹è¿å« TOPN, COUNT DISTINCT ç cube 大å°ç估计</h3> +<p>Cube ç大å°å¨æ建æ¶æ¯é¢å 估计çï¼å¹¶è¢«åç»å 个æ¥éª¤ä½¿ç¨ï¼ä¾å¦å³å® MR / Spark ä½ä¸çååºæ°ï¼è®¡ç® HBase region åå²çãå®çåç¡®ä¸å¦ä¼å¯¹æ建æ§è½äº§çå¾å¤§å½±åã å½åå¨ COUNT DISTINCTï¼TOPN ç度éæ¶åï¼å 为å®ä»¬ç大å°æ¯çµæ´»çï¼å æ¤ä¼°è®¡å¼å¯è½è·çå®å¼æå¾å¤§åå·®ã å¨è¿å»ï¼ç¨æ·éè¦è°æ´è¥å¹²ä¸ªåæ°ä»¥ä½¿å°ºå¯¸ä¼°è®¡æ´æ¥è¿å®é 尺寸ï¼è¿å¯¹æ®éç¨æ·æç¹å°é¾ã<br /> +ç°å¨ï¼Kylin å°æ ¹æ®æ¶éçç»è®¡ä¿¡æ¯èªå¨è°æ´å¤§å°ä¼°è®¡ãè¿å¯ä»¥ä½¿ä¼°è®¡å¼ä¸å®é 大å°æ´æ¥è¿ãæ¥ç KYLIN-3453 äºè§£æ´å¤ä¿¡æ¯ã</p> + +<h3 id="hadoop-30hbase-20">æ¯æHadoop 3.0/HBase 2.0</h3> +<p>Hadoop 3å HBase 2å¼å§è¢«è®¸å¤ç¨æ·éç¨ãç°å¨ Kylin æä¾ä½¿ç¨æ°ç Hadoop å HBase API ç¼è¯çæ°äºè¿å¶å ãæ们已ç»å¨ Hortonworks HDP 3.0 å Cloudera CDH 6.0 ä¸è¿è¡äºæµè¯</p> + +<p><strong>ä¸è½½</strong></p> + +<p>è¦ä¸è½½Apache Kylin v2.5.0æºä»£ç æäºè¿å¶å ï¼è¯·è®¿é®<a href="http://kylin.apache.org/download";>ä¸è½½é¡µé¢</a> .</p> + +<p><strong>å级</strong></p> + +<p>åè<a href="/docs/howto/howto_upgrade.html">å级æå</a>.</p> + +<p><strong>åé¦</strong></p> + +<p>å¦ææ¨éå°é®é¢æçé®ï¼è¯·åéé®ä»¶è³ Apache Kylin dev æ user é®ä»¶å表ï¼d...@kylin.apache.orgï¼u...@kylin.apache.org; å¨åéä¹åï¼è¯·ç¡®ä¿æ¨å·²éè¿åéçµåé®ä»¶è³ dev-subscr...@kylin.apache.org æ user-subscr...@kylin.apache.org订é äºé®ä»¶å表ã</p> + +<p><em>é常æè°¢ææè´¡ç®Apache Kylinçæå!</em></p> + + </article> + +</div> + + + + + + </article> + </div> + </div> + <!-- +* Licensed to the Apache Software Foundation (ASF) under one +* or more contributor license agreements. 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Modified: kylin/site/cn/download/index.html URL: http://svn.apache.org/viewvc/kylin/site/cn/download/index.html?rev=1841530&r1=1841529&r2=1841530&view=diff ============================================================================== --- kylin/site/cn/download/index.html (original) +++ kylin/site/cn/download/index.html Fri Sep 21 03:31:15 2018 @@ -176,7 +176,7 @@ var _hmt = _hmt || []; <h4 id="v250">v2.5.0</h4> <ul> - <li>è¿æ¯2.4çæ¬åçä¸ä¸ªä¸»è¦åå¸çæ¬ï¼å å«äº96 个以ååç§æ¹è¿ãå ³äºå ·ä½å 容请æ¥çåå¸è¯´æ.</li> + <li>è¿æ¯2.4çæ¬åçä¸ä¸ªä¸»è¦åå¸çæ¬ï¼å å«äº96 个以ååç§æ¹è¿ãå ³äºå ·ä½å 容请æ¥ç<a href="/blog/2018/09/20/release-v2.5.0/">v2.5.0 æ£å¼åå¸</a>.</li> <li><a href="/docs/release_notes.html">åå¸è¯´æ</a> and <a href="/docs/howto/howto_upgrade.html">å级æå</a></li> <li>æºç ä¸è½½: <a href="https://www.apache.org/dyn/closer.cgi/kylin/apache-kylin-2.5.0/apache-kylin-2.5.0-source-release.zip";>apache-kylin-2.5.0-source-release.zip</a> [<a href="https://www.apache.org/dist/kylin/apache-kylin-2.5.0/apache-kylin-2.5.0-source-release.zip.asc";>asc</a>] [<a href="https://www.apache.org/dist/kylin/apache-kylin-2.5.0/apache-kylin-2.5.0-source-release.zip.sha256";>sha256</a>]</li> <li>äºè¿å¶å ä¸è½½: Modified: kylin/site/development/howto_release.html URL: http://svn.apache.org/viewvc/kylin/site/development/howto_release.html?rev=1841530&r1=1841529&r2=1841530&view=diff ============================================================================== --- kylin/site/development/howto_release.html (original) +++ kylin/site/development/howto_release.html Fri Sep 21 03:31:15 2018 @@ -6269,12 +6269,12 @@ You can download the source release and Apache Kylin is an open source Distributed Analytics Engine designed to provide SQL interface and multi-dimensional analysis (OLAP) on Apache Hadoop, supporting extremely large datasets. -Apache Kylin lets you query massive data set at sub-second latency in 3 steps: +Apache Kylin lets you query massive dataset at sub-second latency in 3 steps: 1. Identify a star schema or snowflake schema data set on Hadoop. 2. Build Cube on Hadoop. 3. Query data with ANSI-SQL and get results in sub-second, via ODBC, JDBC or RESTful API. -Thanks everyone who have contributed to the 2.5.0 release. +Thanks to everyone who has contributed to the 2.5.0 release. We welcome your help and feedback. For more information on how to report problems, and to get involved, visit the project website at Modified: kylin/site/download/index.html URL: http://svn.apache.org/viewvc/kylin/site/download/index.html?rev=1841530&r1=1841529&r2=1841530&view=diff ============================================================================== --- kylin/site/download/index.html (original) +++ kylin/site/download/index.html Fri Sep 21 03:31:15 2018 @@ -5817,7 +5817,7 @@ var _hmt = _hmt || []; <h4 id="v250">v2.5.0</h4> <ul> - <li>This is a major release after 2.4, with 96 bug fixes and enhancement. For the detail list please check release notes.</li> + <li>This is a major release after 2.4, with 96 bug fixes and enhancement. Check the <a href="/blog/2018/09/20/release-v2.5.0/">v2.5.0 release announcement</a> and the release notes.</li> <li><a href="/docs/release_notes.html">Release notes</a> and <a href="/docs/howto/howto_upgrade.html">upgrade guide</a></li> <li>Source download: <a href="https://www.apache.org/dyn/closer.cgi/kylin/apache-kylin-2.5.0/apache-kylin-2.5.0-source-release.zip";>apache-kylin-2.5.0-source-release.zip</a> [<a href="https://www.apache.org/dist/kylin/apache-kylin-2.5.0/apache-kylin-2.5.0-source-release.zip.asc";>asc</a>] [<a href="https://www.apache.org/dist/kylin/apache-kylin-2.5.0/apache-kylin-2.5.0-source-release.zip.sha256";>sha256</a>]</li> <li>Binary download:
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