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Posted to commits@kylin.apache.org by li...@apache.org on 2019/06/19 12:55:36 UTC
svn commit: r1861620 [15/23] - in /kylin/site: ./ about/ blog/
blog/2015/01/25/introduce-data-model/
blog/2015/06/10/release-v0.7.1-incubating/
blog/2015/08/13/kylin-dictionary/ blog/2015/08/15/fast-cubing/
blog/2015/09/06/release-v1.0-incubating/ blog...
Added: kylin/site/cn_blog/2018/09/20/release-v2.5.0/index.html
URL: http://svn.apache.org/viewvc/kylin/site/cn_blog/2018/09/20/release-v2.5.0/index.html?rev=1861620&view=auto
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--- kylin/site/cn_blog/2018/09/20/release-v2.5.0/index.html (added)
+++ kylin/site/cn_blog/2018/09/20/release-v2.5.0/index.html Wed Jun 19 12:55:31 2019
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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 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ï¼dev@kylin.apache.orgï¼user@kylin.apache.org; å¨åéä¹åï¼è¯·ç¡®ä¿æ¨å·²éè¿åéçµåé®ä»¶è³ dev-subscribe@kylin.apache.org æ user-subscribe@kylin.apache.org订é
äºé®ä»¶å表ã</p>
+
+<p><em>é常æè°¢ææè´¡ç®Apache Kylinçæå!</em></p>
+
+ </article>
+
+</div>
+
+
+
+
+
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