第10åCassandraåå¼·ä¼ã«ã¦çºè¡¨ããã¹ã©ã¤ãã«ãåå¼·ä¼å¾ã®ãã£ã¼ãããã¯ãåæ ãããç©ã§ããRead less

ã²ãã ã¾ï¼¨ï¼°ã®æ´æ°å±¥æ´ã 主ã«ï¼´ï¼²ï¼°ï¼§ãªãã¬ã¤ã®å ãã¿éãããã°ã©ãã³ã°æè¡ã¡ã¢ã¨èªä½ã½ããã好ããªã²ã¼ã ãé³æ¥½ã§ãã irofããã¨daiksyãããTwitterä¸ã§ãã¼ãã¬ã¤ã¯å¦çã«ã¤ãã¦è©±ãã¦ãã¾ããã ï¼ãªã¹ããé ç®ãã¨ã«éè¨ããâããã¬ã¤ã¯å¦çããå®å½¢ã®ã¢ã«ã´ãªãºã ã¨ãã¦ç¿ãã¾ããâãããªè§£ãã«ããã®ããªãã§å¥½ãã§æ¸ããã ããï¼ ãã¼ãã¬ã¤ã¯å¦çã¨ããã®ã¯ããã¼ã¿ããã¼ã§ã½ã¼ããã¦ããã¦é çªã«èªã¿è¾¼ã¿ããã¼ãåãå¤ã®éã«å¦çï¼ããããã®ãéè¨ï¼ãç¶ããããã¼ãéãå¤ã«ãªã£ããï¼ãã¼ããã¬ã¤ã¯ãããï¼éè¨å¤ãåºåããéè¨ç¨å¤æ°ãã¯ãªã¢ãã¦ã¾ãå¦çãç¶ãããã¨ããã¢ã«ã´ãªãºã ã§ãã ã²ã¨ã¤åã®ãã¼ã®å¤ãä¿æãã¦ããå¤æ°ãå¿ è¦ã§ãæåã¯ãããã©ãããå¤ã«ãã¦ããããã¾ããã«ã¼ããæããå¾ã«æå¾ã®ãã¼ã®éè¨å¤ãåºåããå¿ è¦ãããããã¨ãã£ã辺ããèæ ®ããªãã¨ãããªãã®ã§ãæ £ããªãã¨åã
å人çã«ã¯å²ã¨å¤§å¤ã ã£ãã®ã§ããã®è¾ºãã¾ã¨ãã¦ããã¾ãã ãã¥ã¼ã¹ãªãªã¼ã¹ã¯ãã¡ãã http://www.nautilus-technologies.com/topics/20130409.html è¦ããã«æ¬é¨ç³»ããã¯ã¨ã³ãåºå¹¹ã·ã¹ãã ã®ãä¸å¼ãã®ã¯ã©ã¦ã移è¡ã§ããå®å ¨ãªããã·ã§ã³ã¯ãªãã£ã«ã«ã·ã¹ãã ã§ãæ¢ã¾ã£ã段éã§æ¥åã«ç¢ºå®ã«å½±é¿ãåºã¾ãã ã·ã¹ãã ã®æ©è½æ¦è¦ 1.売ä¸ã®ç¢ºå®å¦çã¨åµæ¨©ç®¡ç POSãã¼ã¿ã®ç´çµã§ãã売ä¸ç¢ºå®å¦çãè¡ãã¾ããåæã«åµæ¨©ç®¡çãè¡ããF/Bããã®å ¥éãã¼ã¿ããã®ã¾ã¾ã¤ãªãè¾¼ã¿ãå ¥éå¦çã»åµæ¨©ã®æ¶ãè¾¼ã¿å¦çãå®è¡ãã¾ãããããã³ã°ã¯èªåå¦çã§ãããã®ã¯å¦çãè¡ãããã¥ã¼ãªã¹ãã£ãã¯ãªãã®ã¯ã¦ã¼ã¶ã¼å¤æã«å¾ãã¾ãã 2.ä»å ¥ã»è²»ç¨ã®è¨ä¸ã¨ç¢ºå®å¦çãããã³æ¯æããã¼ã¿ã®ä½æ è²»ç¨ã»å¨åº«ã®è¨ä¸ç¢ºå®å¦çã§ããå½æã«æ¯æãã¼ã¿ã®ç¢ºå®å¦çãè¡ãã¾ããEDIï¼BMSï¼ã¨ã®
ããã°ãã¼ã¿æ代âãªãããã¾æ©æ¢°å¦ç¿ãªã®ã Apache Hadoopï¼ä»¥ä¸ãHadoopï¼ã®ç»å ´ã§ãä»ã¾ã§æ¨ã¦ã¦ãããã¼ã¿ã貯ããã ãã§å¦çããããªãã£ããã¼ã¿ãæ´»ç¨ã§ããããã«ãªãã¾ããã æ´»ç¨æ段ã¨ãã¦æè¿ã¨ã¿ã«æ³¨ç®ããã¦ããæè¡ããæ©æ¢°å¦ç¿ãã§ãããHadoopã®å¼·ã¿ãçããç°¡åã«æ©æ¢°å¦ç¿ãè¡ãããã®ã©ã¤ãã©ãªãããApache Mahoutãï¼ä»¥ä¸ãMahoutï¼ã§ãã æ¬ç¨¿ã§ã¯Mahoutãåããã¦ã¿ããã¨ã§ãæ©æ¢°å¦ç¿ã®å¸¸èã身ã«ä»ãã¾ãã ãããããæ©æ¢°å¦ç¿ã¨ã¯ï¼ æ©æ¢°å¦ç¿ã¨ã¯ãä¸å®ã®ãã¼ã¿ãã³ã³ãã¥ã¼ã¿ã»ããã°ã©ã ã«ãå¦ç¿ãããï¼ããªãã¡ããã®ãã¼ã¿ã«æ½ããã¿ã¼ã³ãè¦åæ§ã表ããã¢ãã«ããèªåçã«æ§ç¯ããï¼ãä»ã®ãã¼ã¿ã«ãã®ã¢ãã«ãé©ç¨ããã°ããããã人éã®ããã«è¤éã§æè»ãªå¤æãè¡ããããã«ããã¨ãã試ã¿ã§ãã æ©æ¢°å¦ç¿ããã¸ãã¹ã«æ´»ç¨ããä¾ã¯ãã¬ã³ã¡ã³ãï¼ã¦ã¼ã¶ã¼ãåå
MapReduceã¨ããã¨éè¨ã«ä½¿ãã¢ãã¨ãã人ãå¤ãã¨æãã ãªãã¨ãªãã°ãMapReduceï¼Hadoopï¼ã¯ã¼ãã«ã¦ã³ãã®å³å¼ã«ãªã£ã¦ããããã ã å®éãHadoopã触ã£ã¦ã¿ããã¨ãã人ã®ã»ã¨ãã©ã¯exampleã¨ãã¦ã¯ã¼ãã«ã¦ã³ãã使ãã¯ãããã®è¾ºã«è½ã¡ã¦ãã·ã§ã¼ã¯ã¹ãã¢ã®ãã°ã§Hadoopã®exampleãåããã人ããããã¯ãã ã¨ãããå®éã«æ¥åãããçãªå¦çãè¡ãã¨ãã«ãMapReduceã®å¹æçãªä½¿ãæ¹ã¯å¥ã«ããããå人çã¯ããæ¬å½ã®MapReduceã®ä½¿ããããã¯ãã£ã¡ã ã¨æãããªãã¨ãããã¨ã¯ãªãã¦ãçµã¿åããè¨ç®ãé«éã«è¡ããã ããã種ã®è¨ç®ã§ã¯ãé åºå¦çã§ã®ãã¢ãããã¦ãã¾ãã±ã¼ã¹ã®ä¸ã¤ã«çµã¿åããã®è¨ç®ããã Node{ List<Node> nodeList value(){ hasNodeList() ? nodeList.traverse(value()
ããã¼ã¿ã®ã©ã¤ãã»ãµã¤ã¯ã«ããèãã RDBMSã¯ããéå®åå¦çã¸ã®æ´»ç¨ããããããå¦çã®ã¹ã±ã¼ã«ã»ã¢ã¦ããã¨ãã観ç¹ã§éçã«çªãå½ãã£ã¦ãã¾ããããããRDBMSã®è±å¯ãªæ©è½ãç¾ä»£ã®ã³ã³ãã¥ã¼ã¿ã»ã·ã¹ãã ã«æ¬ ãããªãåå¨ã§ãããã¨ãééãããã¾ããããã®çç¾ãã©ã解決ããã°ããã®ã§ããããã ãã®åé¡ã解決ããéµã¯ãããã¼ã¿ã®ã©ã¤ãã»ãµã¤ã¯ã«ãã«ããã¾ãã RDBMSã¯ã管çãããã¼ã¿ã¯ãã¹ã¦ãèµ·ãã¦ããï¼æ´»åãã¦ããï¼ããã¤ã¾ãããã¤ã§ãæ´æ°ãããå¯è½æ§ãããããã¨ãåæã«è¨è¨ããã¦ãã¾ããä¾ãã°ãéè¡ã®å£åº§æ®é«ã¯ããããå¦çãé²ãã§ããæä¸ã«ããATMããã®å¼ãåºããªã©ã®ãªã¢ã«ã¿ã¤ã å¦çã§æ´æ°ãããå¯è½æ§ãããã¾ãã ãããããã¹ã¦ã®ãã¼ã¿ããèµ·ãã¦ãããããã§ã¯ããã¾ãããä¾ãã°ãéè¡å£åº§ã®ãæ¨æ¥ã®åå¼å±¥æ´ãã¯ãéå»ã®ãã¼ã¿ãªã®ã§ãæ´æ°ãããå¯è½æ§ã¯ã¾ãããã¾ããï¼éå»ã®åå¼å±¥æ´ã
Amazon Elastic MapReduceã¨ã¯ æ¨ä»ããããå¦çã«Hadoopãæ´»ç¨ããäºä¾ã話é¡ã«ãªã£ã¦ãã¾ãããã®ä¸ã§ãç¹çãã¹ããªã®ã¯ãåæ£å¦çæè¡ã§ããMapReduceã§ããããããMapReduceãå®éã«ä½¿ãã«ã¯ãæ°å°ããæ°100å°ã®ãµã¼ããç¨æããHadoopã®ã»ããã¢ãããããªããã°ãªãã¾ããããã®ãããªãµã¼ãæ§ç¯ã»ç®¡çãã»ããã¢ããã®æéãç¡ããããã使ããã®ãAmazon Web Serviceï¼AWSï¼ã®Elastic MapReduceï¼EMRï¼ã§ãã å³1ãAmazon Elastic MapReduce AWSãMapReduceã®èª¬æã¯å¤ãã®æ¸ç±ãããã°ãªã©ãåç §ãã¦ãã ãããã¾ããEMRã使ç¨ããã«ã¯ãã¾ãAWSã®ã¢ã«ã¦ã³ããä½ã£ã¦ããå¿ è¦ãããã¾ããããã®æé ãå²æããã¦ããã ãã¾ããæ¬é£è¼ã§ã¯EMRã®ä½¿ãæ¹ãæ°ãã¤ããªããã°ãããªãç¹ãªã©ãéç¹ç
ã¯ããã¾ãã¦ãä»å¹´ã®5æã«å ¥ç¤¾ããåé@ããããã¼ã ã§ãã å ¥ç¤¾ãã¦ããã¯ããªããªã大å¤ãªãã¨ãå¤ãã§ãããæè¿ã¯ãé 好ããéã¾ã£ã¦ææãã飲ã¿åã ãåéä¼ããªããã®ãçºè¶³ãã¦ãä»äºé¢ã§ãä»äºä»¥å¤ã®é¢ã§ãå¯åº¦ã®é«ãæ¯æ¥ãéããã¦ãã¾ãï¼ ãã¦ãåã¯ããããããã¼ã æå±ã¨ãããã¨ã§ãæ®æ®µã¯ã¬ã·ãããããããã¦ã¼ã¶ã®æºè¶³åº¦ãä¸ããããã«ã ã¯ãã¯ãããã®æ¤ç´¢ã¾ããã«ã¤ãã¦ããããããªéçºãè¡ã£ã¦ãã¾ãã ä¸æ¹ã§ãã¦ã¼ã¶ã®ãããã欲æ±ãã«ã¤ãã¦æ·±ãç¥ãããã«ã大è¦æ¨¡ãªãã¼ã¿è§£æãè¡ãã欲æ±ã®åæãè¡ãæ©ä¼ãå¢ãã¦ãã¾ããã ã¨ããããã¯ãã¯ãããã®ãã°ã¯è¨å¤§ãªæ°ãããã®ã§ãä¸å£ã®ãã¼ã¿è§£æã¨è¨ã£ã¦ãé常ã®ãããå¦çã ã¨éã«åããªãããã åæ£å¦çç°å¢ã®å¿ è¦æ§ãé«ã¾ã£ã¦ãã¾ããã ããã§ãã¾ãã¯æ軽ã«è©¦ããåæ£å¦çã®çéã¨ãããã¨ã§ãæè¿ã§ã¯Hadoopã使ã£ããã¼ã¿è§£æç°å¢ãæ´åãã¦ãã¾ãã
ã¤ãã¼æ ªå¼ä¼ç¤¾ã¯ã2023å¹´10æ1æ¥ã«LINEã¤ãã¼æ ªå¼ä¼ç¤¾ã«ãªãã¾ãããLINEã¤ãã¼æ ªå¼ä¼ç¤¾ã®æ°ããããã°ã¯ãã¡ãã§ããLINEã¤ãã¼ Tech Blog ããã«ã¡ã¯ãå°åãµã¼ãã¹äºæ¥é¨ã®åç°ä¸æã§ãã ä»åã¯ãHadoopã«ã¤ãã¦ãYahoo! JAPANã§ã®å®éã®ä½¿ç¨ä¾ã交ããªããæ¸ãããã¨æãã¾ããHadoopã¨ã¯ã大éã®ãã¼ã¿ãæ軽ã«è¤æ°ã®ãã·ã³ã«åæ£ãã¦å¦çã§ãããªã¼ãã³ã½ã¼ã¹ã®ãã©ãããã©ã¼ã ã§ãã è¤æ°ã®ãã·ã³ã¸ã®åæ£å¦çã¯ãããã»ã¹ééä¿¡ããé害æã¸ã®å¯¾å¿ãªã©ãèããªããã°ãªãããããã°ã©ãã«ã¨ã£ã¦æ·å± ãé«ããã®ã§ããã Hadoopã¯ãããã£ãé¢åãããåæ£å¦çãä¸æã«å¼ãåãã¦ããã¾ãã 1å°ã§ã¯å¦çã«ããªãæéãããããããªå¤§éã®ãã¼ã¿ããè¤æ°ãã·ã³ã«åæ£ããããã¨ã§ãé©ãã¹ãã¹ãã¼ãã§å¦çãè¡ããã¨ãã§ãã¾ãã ä¾ãã°ãä»ã¾ã§1å°ã§ãã£ã¦ããããããã°éè¨å¦ç
Hadoopï¼Hiveæ¤è¨¼ç°å¢ãæ§ç¯ãã¦ã¿ãï¼HiveââRDB使ãã®ããã®Hadoopã¬ã¤ãï¼åç·¨ï¼ï¼1/3 ãã¼ã¸ï¼ Hadoop Hiveã¯Hadoopä¸ã§SQLã©ã¤ã¯ãªã¯ã¨ãªæä½ãå¯è½ãªDWHåãã®ãããã¯ãã§ããSQLã«è¿ãæä½ãå¯è½ãªãããHBaseããããã¼ã¿ãã¼ã¹ã«æ £ã親ããã ã¿ãªããã«ã¯ä½¿ãåæãããããããã¾ãããæ¬ç¨¿ã§ã¯ãã®Hiveã®ä½¿ãæ¹ã¨ã¬ãã¥ã¼ãè¡ã£ã¦ããã¾ãã
2008/12/01 楽天ã¯11æ29æ¥ãæ±äº¬ã»åå·ã®æ¬ç¤¾ã§éå¬ããæè¡ç³»ã¤ãã³ãã楽天ãã¯ããã¸ã¼ã«ã³ãã¡ã¬ã³ã¹2008ãã«ããã¦ãè¿ãå°æ¥ã«å社ã®Eã³ãã¼ã¹ãµã¼ãã¹ã楽天å¸å ´ããæ¯ããè¨ç»ãããRubyãã¼ã¹ã®å¤§è¦æ¨¡åæ£å¦çæè¡ãROMAãï¼ãã¼ãï¼ã¨ãfairyãï¼ãã§ã¢ãªã¼ï¼ã«ã¤ãã¦ããã®æ¦è¦ãæããã«ããã ã¬ã³ã¡ã³ãã¼ã·ã§ã³ã®å¦çèªä½ã¯ã·ã³ã㫠楽天å¸å ´ã§ã¯ç¾å¨ã2600ä¸ç¹ã®ååãåãæ±ãã4200ä¸äººã®ä¼å¡ã«å¯¾ãã¦ãµã¼ãã¹ãæä¾ãã¦ããããã®è¦æ¨¡ã®ä¼å¡æ°ã»ååç¹æ°ã§ã¬ã³ã¡ã³ãã¼ã·ã§ã³ï¼ååã®æ¨è¦ï¼ãè¡ãã®ã¯å®¹æã§ã¯ãªãã â»è¨äºååºæã«æ¥½å¤©å¸å ´ã®ä¼å¡æ°ã4800ä¸äººã¨ãã¦ããã¾ããããããã¯æ¥½å¤©ã°ã«ã¼ãã®ãµã¼ãã¹å©ç¨è å ¨ä½ã®æ°åã§ããã楽天å¸å ´ã®ä¼å¡æ°ã¯æ£ããã¯4200ä¸äººã¨ã®ãã¨ã§ãããè©«ã³ãã¦è¨æ£ãããã¾ãã ã¬ã³ã¡ã³ãã¼ã·ã§ã³ã®ä»çµã¿ã¨ãã¦å社ã¯ãä¸è¬çã§ã·ã³ãã«ãªã¢
id:naoya:20080511:1210506301 ã®ã¨ã³ããªã®ã³ã¡ã³ãæ¬ã§ kzk ããã«æãã¦ããã ãã Hadoop Streaming ã試ãã¦ãã¾ãã Hadoop ã¯ãªã¼ãã³ã½ã¼ã¹ã® MapReduce + åæ£ãã¡ã¤ã«ã·ã¹ãã ã§ããJava ã§ä½ããã¦ãã¾ããYahoo! Inc ã®ããã¯ã¨ã³ãããFacebookãAmazon.com ãªã©ã§ãå©ç¨ããã¦ããã¨ã®ãã¨ã§ãã詳ãã㯠http://codezine.jp/a/article/aid/2448.aspx (kzk ããã«ããé£è¼è¨äº)ãåç §ãã¦ãã ããã Hadoop Streaming è¨äºã«ãããã¾ãéããHadoop æ¡å¼µã® Hadoop Streaming ã使ãã¨æ¨æºå ¥åºåãä»ããããã°ã©ã ãè¨è¿°ããã ãã§ãHadoop ã«ãã MapReduce ãå©ç¨ãããã¨ãã§ãã¾ããã¤ã¾ããJava 以å¤
Googleã®MapReduceã¢ã«ã´ãªãºã ãJavaã§ç解ããï¼ãã¾å注ç®ã®åæ£å¦çæè¡ï¼åç·¨ï¼ï¼1/2 ãã¼ã¸ï¼ æè¿æ³¨ç®ãæµ´ã³ã¦ããåæ£å¦çæè¡ãMapReduceãã®å©ç¹ããµã³ãã«ããã¢ã«ã´ãªãºã ã¬ãã«ã§ç解ããæããããJavaé¢é£ã®åæ£å¦çæè¡ãè¦ç´ãç¹éä¼ç»ï¼ç·¨éé¨ï¼ ãã¾æ³¨ç®ã®å¤§è¦æ¨¡åæ£å¦çã¢ã«ã´ãªãºã æè¿ã大è¦æ¨¡åæ£å¦çã注ç®ãæµ´ã³ã¦ãã¾ããç¹ã«ããMapReduceãã¨ããã¢ã«ã´ãªãºã ã«ã¤ãã¦ç®ã«ãããã¨ãå¤ããªãã¾ãããGoogleã®è¨å¤§ãªãµã¼ãå¦çã§ä½¿ããã¦ããã¨ãããã¨ã§ãããæ°å¹´ã®åæ£å¦çæè¡ã®ä¸ã§ã¯ç¹ã«æ³¨ç®ãæµ´ã³ã¦ããããã§ãï¼åèãè¦ããã°ã¼ã°ã«ãè¦ããªãã°ã¼ã°ã«ãï¼ãMapReduceã¢ã«ã´ãªãºã ã使ãå©ç¹ã¨ã¯ããã£ããä½ãªã®ã§ããããããªãããã¾æ³¨ç®ãæµ´ã³ã¦ããã®ã§ããããã ãã®è©³ç´°ã¯ãMapReduce : Simplified Data Proc
ãã¿ãã¤ãè¦æ¨¡ã®ãã¼ã¿ãæ ¼ç´ãããåæ£ã³ã³ãã¥ã¼ãã£ã³ã°ç¨ãã©ãããã©ã¼ã ãæ¢ãã¦ããã®ã§ããã°ããã®ãã¬ã¼ã ã¯ã¼ã¯ã¨ã㦠Hadoop ã®ä½¿ç¨ãæ¤è¨ãã¹ãã ãããHadoopã¯Javaãã¼ã¹ã§ä½æããã¦ãããããLinuxãWindowsãSolarisãBSDãMac OS Xã«ã¦ä½¿ç¨ã§ãããããããHadoopãå®éã«æ¡ç¨ãã¦ããçµç¹ã«å ±éããã®ã¯ãå®ä¾¡ï¼ç¹æ®ãªãã¼ãã¦ã§ã¢ãä¸è¦ï¼ãã¤å¹ççã§ã¹ã±ã¼ã©ããªãã£ã¨ä¿¡é ¼æ§ãå ¼ãåãããã©ãããã©ã¼ã ã«ãããè¨å¤§ãªéã®ãã¼ã¿å¦çãå¿ è¦ã¨ãã¦ããã¨ããç¹ã ã Hadoopã§ã¯ãããããè¨å¤§ãªéã®ãã¼ã¿ãæ ¼ç´ããããã«ãHadoop Distributed File Systemï¼HDFSï¼ãæ¡ç¨ãã¦ãããå®éãHDFSã®ãã¹ã¿/ã¹ã¬ã¼ãã¢ã¼ããã¯ãã£ã¯ãHadoopã®ã¯ã©ã¹ã¿æ©è½ã®ä¸æ ¸ãæãã¦ãããããã§ãµãã¼ãããã¦ããã®ã¯ããã¡ã¤ã«ã·ã¹ã
CodeZineç·¨éé¨ã§ã¯ãç¾å ´ã§æ´»èºãããããããã¼ãã¹ã¿ã¼ã«ããããã®ã«ã³ãã¡ã¬ã³ã¹ãDevelopers Summitãããã¨ã³ã¸ãã¢ã®çããã¾ããã¼ã¹ãããããã®ã¤ãã³ããDevelopers Boostããªã©ããã¾ãã¾ãªã«ã³ãã¡ã¬ã³ã¹ãä¼ç»ã»éå¶ãã¦ãã¾ãã
ãªãªã¼ã¹ãé害æ å ±ãªã©ã®ãµã¼ãã¹ã®ãç¥ãã
ææ°ã®äººæ°ã¨ã³ããªã¼ã®é ä¿¡
å¦çãå®è¡ä¸ã§ã
j次ã®ããã¯ãã¼ã¯
kåã®ããã¯ãã¼ã¯
lãã¨ã§èªã
eã³ã¡ã³ãä¸è¦§ãéã
oãã¼ã¸ãéã
{{#tags}}- {{label}}
{{/tags}}