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An introduction to Apache Cassandra

A introduction to Apache Cassandra, what is it and how does it work ? How can it be used with Hadoopand how does it perorm ?

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An introduction to Apache Cassandra

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  1. Apache Cassandra • What is it ? • How does it work ? • Hadoop • Tools • Architecture www.semtech-solutions.co.nz info@semtech-solutions.co.nz

  2. Cassandra – What is it ? • Distributed database management system • Designed for big data • Scalable • Fault tolerant • No single point of failure • Has an SQL like query language • NoSQL www.semtech-solutions.co.nz info@semtech-solutions.co.nz

  3. Cassandra – How does it work ? • Organises data into tables • Uses Cassandra Query Language ( CQL )‏ • Does not allow sub queries or joins • Supports Hadoop Map Reduce • Uses asynchronous masterless replication • Gives low latency • Allows indexing • Allows batch analysis via Hadoop www.semtech-solutions.co.nz info@semtech-solutions.co.nz

  4. Cassandra – Hadoop How does Cassandra integrate with Hadoop • Support for Map Reduce • Integration with • Apache Pig • Apache Hive • Can also act as a back end for Solr ! www.semtech-solutions.co.nz info@semtech-solutions.co.nz

  5. Cassandra – Tools • User Interface ( GUI ) • Cassandra GUI • Toad for cloud db's • Administration • OpsCentre • Cassandra Cluster Admin • Other • Client libraries • Java, Python, .Net, Perl etc www.semtech-solutions.co.nz info@semtech-solutions.co.nz

  6. Cassandra – Architecture • A peer to peer cluster • No single point of failure • Tunable consistency • Is performance or accuracy more important ? • Query by key or key range • Row oriented data storage • Rows can hold up to 2 billion columns www.semtech-solutions.co.nz info@semtech-solutions.co.nz

  7. Cassandra – Architecture www.semtech-solutions.co.nz info@semtech-solutions.co.nz

  8. Contact Us • Feel free to contact us at • www.semtech-solutions.co.nz • info@semtech-solutions.co.nz • We offer IT project consultancy • We are happy to hear about your problems • You can just pay for those hours that you need • To solve your problems

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