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Analytical Queries with Hive: SQL Windowing and Table Functions
Analytical Queries with Hive: SQL Windowing and Table Functions Hive Query Language (HQL) is excellent for productivity and enables reuse of SQL skills, but falls short in advanced analytic queries. Hive`s Map & Reduce scripts mechanism lacks the simplicity of SQL and specifying new analysis is cumbersome. We developed SQLWindowing for Hive(SQW) to overcome these issues. SQW introduces both Window
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1. Hive/Pigを使ã£ãŸKDD'12 track2 ã®åºƒå‘Šã‚¯ãƒªãƒƒã‚¯çŽ‡äºˆæ¸¬ 油井 èª m.yui@aist.go.jp 産æ¥æŠ€è¡“ç·åˆç ”究所 æƒ…å ±æŠ€è¡“ç ”ç©¶éƒ¨é–€ Twitter ID: @myui スライド http://www.slideshare.net/myui/dsirnlp-myuilt 1 http://goo.gl/Ulf3A 2. KDDcup 2012 track2 • 検索ãƒã‚°ã‚’基ã«ã€æ¤œç´¢ã‚¨ãƒ³ã‚¸ãƒ³ã®åºƒå‘Šã®ã‚¯ãƒªãƒƒã‚¯ 率(Click-Through Rate)を推定ã™ã‚‹ã‚¿ã‚¹ã‚¯ – ä¸å›½ã®3大検索エンジンã®ä¸€ã¤soso.comã®å®Ÿãƒ‡ãƒ¼ã‚¿ • 検索語ãªã©ã¯Hash値ãªã©ã‚’利用ã—ã¦ã™ã¹ã¦æ•°å€¤åŒ–ã•ã‚Œã¦ã„ ã‚‹ – Trainingデータ(ç´„10GB+2.2GB, 15億レコード） – Testデータ（約1.3GB, 2億レコード） • å¦ç¿’データã®1.33割ãŒè©•ä¾¡ç”¨ãƒ‡ãƒ¼ã‚¿ã‚»ãƒƒãƒˆ –
LanguageManual UDF - Apache Hive - Apache Software Foundation
When hive.cache.expr.evaluation is set to true (which is the default) a UDF can give incorrect results if it is nested in another UDF or a Hive function. This bug affects releases 0.12.0, 0.13.0, and 0.13.1. Release 0.14.0 fixed the bug (HIVE-7314). The problem relates to the UDF's implementation of the getDisplayString method, as discussed in the Hive user mailing list.
Hive - HADOOP2 - Apache Software Foundation
The Apache Hive wiki has moved to Confluence! If you're looking for a particular page name, try this list. (There's also a generated HTML version of the Confluence content. Please keep this link here so that search engine crawlers can find it; they're blocked from the live Confluence content by a robots.txt file, and we want them to find the HTML anyway to reduce load on Confluence.)
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Shark - SQL on Spark
Tenzing A SQL Implementation On The MapReduce Framework
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