[B! MapReduce] koma-takã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

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MapReduceã«é–¢ã™ã‚‹koma-takã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (5)

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MapReduce on Tyrant - mixi engineer blog
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koma-tak 2009/04/07
mapreduce
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CouchDBè©¦ã—ã¦ã¿ãŸ - tkmrã®æ—¥è¨˜
RDDBã®å«Œãªéƒ¨åˆ†ãŒã‹ãªã‚Šå›žé¿ã§ãã‚‹ã—ã€æ¤œç´¢ã‚¯ã‚¨ãƒªãƒ¼ã‚’JavaScriptã®MapReduceé–¢æ•°ã¨ã—ã¦æ›¸ã‘ã¦é¢ç™½ã„ã€‚ å‚è€ƒã«ã•ã›ã¦è²°ã£ãŸã€‚ http://diary.voq.jp/archives/10 - CouchDB 0.8 ã‚’è©¦ã—ã¦ã¿ã‚‹ http://diary.voq.jp/archives/11 - CouchDB ã®ã‚¯ã‚¨ãƒªãƒ¼ã¨ MapReduce GenderãŒMaleã®ãƒ‰ã‚ãƒ¥ãƒ¡ãƒ³ãƒˆã‚’æ¤œç´¢ã™ã‚‹Map: function(doc){ if(doc.gender == "Male"){ em it(null, doc); } } ã¿ãŸã„ãªã€‚ ã¾ã‚ãƒ‘ãƒ•ã‚©ãƒ¼ãƒžãƒ³ã‚¹ã¯ç½®ã„ã¨ã„ã¦ã€ã©ã“ã‹ã§ä½¿ãˆã‚‹æ©Ÿä¼šã‚ã£ãŸã‚‰ã‚‚ã†å°‘ã—æœ¬æ ¼çš„ã«è©¦ã—ã¦ã¿ã‚ˆã†ã‹ãª
koma-tak 2008/07/01
MapReduce

CouchDB
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voq.jpÂ -Â ã“ã®ã‚¦ã‚§ãƒ–ã‚µã‚¤ãƒˆã¯è²©å£²ç”¨ã§ã™ï¼Â -Â voq ãƒªã‚½ãƒ¼ã‚¹ãŠã‚ˆã³æƒ…å ±
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koma-tak 2008/07/01
MapReduce

CouchDB
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ã‚¹ã‚°ãƒ«ãƒ‹ãƒƒã‚Â» ãƒ–ãƒã‚°ã‚¢ãƒ¼ã‚«ã‚¤ãƒ– Â» CouchDB 0.8 ã‚’è©¦ã—ã¦ã¿ã‚‹
This webpage was generated by the domain owner using Sedo Domain Parking. Disclaimer: Sedo maintains no relationship with third party advertisers. Reference to any specific service or trade mark is not controlled by Sedo nor does it constitute or imply its association, endorsement or recommendation.
koma-tak 2008/07/01
MapReduce

CouchDB
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MapReduce - naoyaã®ã¯ã¦ãªãƒ€ã‚¤ã‚¢ãƒªãƒ¼
"MapReduce" ã¯ Google ã®ãƒãƒƒã‚¯ã‚¨ãƒ³ãƒ‰ã§åˆ©ç”¨ã•ã‚Œã¦ã„ã‚‹ä¸¦åˆ—è¨ˆç®—ã‚·ã‚¹ãƒ†ãƒ ã§ã™ã€‚æ¤œç´¢ã‚¨ãƒ³ã‚¸ãƒ³ã®ã‚¤ãƒ³ãƒ‡ãƒƒã‚¯ã‚¹ä½œæˆã‚’ã¯ã˜ã‚ã¨ã™ã‚‹ã€å¤§è¦æ¨¡ãªå…¥åŠ›ãƒ‡ãƒ¼ã‚¿ã«å¯¾ã™ã‚‹ãƒãƒƒãƒå‡¦ç†ã‚’æƒ³å®šã—ã¦ä½œã‚‰ã‚ŒãŸã‚·ã‚¹ãƒ†ãƒ ã§ã™ã€‚ MapReduce ã®é¢ç™½ã„ã¨ã“ã‚ã¯ã€map() ã¨ reduce() ã¨ã„ã†äºŒã¤ã®é–¢æ•°ã®çµ„ã¿åˆã‚ã›ã‚’å®šç¾©ã™ã‚‹ã ã‘ã§ã€å¤§è¦æ¨¡ãƒ‡ãƒ¼ã‚¿ã«å¯¾ã™ã‚‹æ§˜ã€…ãªè¨ˆç®—å•é¡Œã‚’è§£æ±ºã™ã‚‹ã“ã¨ãŒã§ãã‚‹ç‚¹ã§ã™ã€‚ MapReduce ã®è¨ˆç®—ãƒ¢ãƒ‡ãƒ« map() ã«ã¯ãã®è¨ˆç®—å•é¡Œã®ãƒ‡ãƒ¼ã‚¿ã¨ã—ã¦ã® key-value ãƒšã‚¢ãŒæ¬¡ã€…ã«æ¸¡ã£ã¦ãã¾ã™ã€‚map() ã§ã¯ key-value å€¤ã®ãƒšã‚¢ã‚’ç•°ãªã‚‹è¤‡æ•°ã® key-value ãƒšã‚¢ã«å¤‰æ›ã—ã¾ã™ã€‚reduce() ã«ã¯ã€map() ã§ä½œã£ãŸ key-value ãƒšã‚¢ã‚’åŒä¸€ã® key ã§æŸããŸã‚‚ã®ãŒé †ç•ªã«æ¸¡ã£ã¦ãã¾ã™ã€‚ãã® key-values ãƒšã‚¢ã‚’ä»»æ„ã®å½¢å¼ã«å¤‰æ›ã™ã‚‹ã“ã¨
koma-tak 2008/05/12
google

mapreduce
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