HUGUK #4 - Cascalog

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Slides from my lightning talk on Cascalog at the 4th Hadoop Users Group UK meeting, 3rd June 2010

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  • JVM - full power of Java
    Datalog - Logic programming language



  • HUGUK #4 - Cascalog

    1. 1. Cascalog A Clojure-based query language for Hadoop Gavin Heavyside (@_hgavin) HUGUK June 2010
    2. 2. Cascalog • Clojure based • Inspired by Datalog • Uses Cascading to run MapReduce jobs • By Nathan Marz of Backtype
    3. 3. Features • Functions, Filters, Aggregators • Joins, Combiners, Sorting • Cascading “Taps” to query HDFS/Files etc • Cascading interop • Full power of Clojure
    4. 4. Demo • Fingers Crossed
    5. 5. Find out more • http://nathanmarz.com/blog • http://github.com/nathanmarz/cascalog • cascalog-user Google group • @nathanmarz

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