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Dan Bassett, Jonathan Canfield December 13, 2011

Dan Bassett, Jonathan Canfield December 13, 2011. What is Hadoop ?. Allows for the distributed processing of large data sets across clusters of computers Open-source project written in Java Actively supported Inspired by a project that Google started. What’s the big deal?.

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Dan Bassett, Jonathan Canfield December 13, 2011

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  1. Dan Bassett, Jonathan Canfield December 13, 2011

  2. What is Hadoop? • Allows for the distributed processing of large data sets across clusters of computers • Open-source project written in Java • Actively supported • Inspired by a project that Google started

  3. What’s the big deal? • Changes the economics and dynamics of large scale computing • Scalable • Cost effective • Flexible • Fault Tolerant

  4. Commercially supported • InfoSphereBigInsights • Silicon Graphics CloudRack • EMC Greenplum • Google App Engine • Oracle Big Data Appliance • ClouderaCDH, Professional Services • Microsoft Windows Server, SQL Server

  5. Who Uses Hadoop?

  6. Prominent Users • Facebook - claims to have the largest Hadoop cluster in the world at 30PB. • Yahoo! - claims to have the world’s largest Hadoop production application. • eBay – 5.3PB, 532 nodes cluster • New York Times – processed 4TB of image data into 11 million PDFs at cost of ~ $240

  7. How Does It Work?

  8. Architecture • Hadoop Common • HadoopDistributed File System (HDFS) • MapReduce Engine

  9. File System (HDFS) • One big file system from many nodes • Fault-tolerant • Runs on low-cost commodity hardware

  10. MapReduce Engine • Splits input data • Assigns work to nodes • Processed in parallel

  11. MapReduce Illustration

  12. MapReduce Step 1

  13. MapReduce Step 2

  14. MapReduce Step 3

  15. MapReduce Step 4

  16. MapReduce Step 4

  17. MapReduce Step 5

  18. MapReduce Step 5

  19. MapReduce Step 6

  20. MapReduce Illustration

  21. Resources • Project Homehttp://hadoop.apache.org/ • Wikipediahttp://en.wikipedia.org/wiki/Apache_Hadoop • IBMhttp://www-01.ibm.com/software/data/infosphere/hadoop/

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