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Data science with Windows Azure - A Brief Introduction
The document presents insights from a talk by Adnan Masood, Ph.D., on data science using Microsoft Azure, focusing on machine learning and Hadoop frameworks. It explains the architecture and functionality of Hadoop and MapReduce, highlighting their applications in various fields, and introduces Apache Spark as a high-performance computing solution. Key players in the Hadoop ecosystem, including Hortonworks and Cloudera, are discussed, alongside the role of cloud service providers like AWS and Google in delivering Hadoop-as-a-Service.
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Data science with Windows Azure - A Brief Introduction
- 1. A D NA N M A S O O D , P H D S Y S T E M S A R C H I T E C T / S O F T W A R E E N G I N E E R A D N A N . M A S O O D @ O W A S P . O R G ( H T T P : / / B L O G . A D N A N M A S O O D . C O M ) G I T H U B ( G I T H U B . C O M / A D N A N M A S O O D ) , T W I T T E R ( @ A D N A N M A S O O D ) . P R E S E N T E D A T M I C R O S O F T D A T A S C I E N C E G R O U P – T A M P A A N A L Y T I C S P R O F E S S I O N A L S H T T P : / / W W W . M E E T U P . C O M / A N A L Y T I C S - P R O F E S S I O N A L S - O F - T A M P A / E V E N T S / 2 2 8 7 9 6 3 4 3 / Data Science with Windows Azure
- 2. About the Speaker AdnanMasood, Ph.D. is a developer, software architect, and researcher and specializes in machine learning and Bayesian belief networks. Before joining PDS Health care, and GDC (a leading prepaid financial technology institution), he enjoyed life as a principal engineer of a start-up and worked for a leading UK based nonprofit organization as a solutions architect. A strong believer in the development community, Adnan is an active member of the Open Web Application Security Project (OWASP), an organization dedicated to software security. In the .NET community, he is a cofounder and president of the Pasadena .NET Developers group, which he has been successfully leading for 8 years. He led a number of successful enterprise solutions and consulted for several Fortune 500 company projects. Adnan devotes himself to his own continual, practical education. He holds certifications in big data, machine learning, and systems architecture from Massachusetts Institute of Technology; an Application Security certification from Stanford University; an SOA Smarts certification from Carnegie Mellon University; and certifications as a ScrumMaster, Microsoft Certified Trainer, Microsoft Certified Solutions Developer, and Sun Certified Java Developer.
- 3. Key Take Awaysfrom this Talk Understand what Microsoft Offers for Data Science in Windows Azure. (or how to write mapReduce jobs in C#) Diagrams are Courtesy of Microsoft Corporation
- 5. Diagrams are Courtesyof Microsoft Corporation
- 6. Diagrams are Courtesyof Microsoft Corporation
- 7. Diagrams are Courtesyof Microsoft Corporation
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- 12. What is Hadoop? At Google MapReduce operation are run on a special file system called Google File System (GFS) that is highly optimized for this purpose. GFS is not open source. Doug Cutting and others at Yahoo! reverse engineered the GFS and called it Hadoop Distributed File System (HDFS). The software framework that supports HDFS, MapReduce and other related entities is called the project Hadoop or simply Hadoop. This is open source and distributed by Apache. 12
- 13. MapReduce13 MapReduce is aframework for processing parallelizable problems across huge datasets using a large number of computers (nodes), collectively referred to as a cluster or a grid. 6/16/2015
- 14. Classes of problems“mapreducable” Benchmark for comparing: Jim Gray’s challenge on data- intensive computing. Ex: “Sort” Google uses it for wordcount, adwords, pagerank, indexing data. Simple algorithms such as grep, text-indexing, reverse indexing Bayesian classification: data mining domain Facebook uses it for various operations: demographics Financial services use it for analytics Astronomy: Gaussian analysis for locating extra-terrestrial objects. Expected to play a critical role in semantic web and in web 3.0 14
- 15. Apache Spark ApacheSpark is an open source cluster computing framework originally developed in the AMPlab at UC Berkley. Spark in-memory provides performance up to 100 times faster for certain applications. Spark is well suited for machine learning algorithms. Spark requires a cluster manager and a distributed storage system. Spark supports Hadoop YARN. 6/16/2015 15
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- 17. Example: counting thenumber of occurrences for each word in a collection of documents The input file is a repository of documents, and each document is an element. The Map function for this example uses keys that are of type String (the words) and values that are integers. The Map task reads a document and breaks it into its sequence of words w1,w2, . . . ,wn. It then emits a sequence of key-value pairs where the value is always 1. That is, the output of the Map task for this document is the sequence of key-value pairs: (w1, 1), (w2, 1), . . . , (wn, 1) 6/16/2015 17
- 18. Key Players inHadoop World HortonWorks Cloudera MAPR
- 19. Hortonworks isa Business computer software company based in Palo Alto,California Hortonworks supports & develops Apache Hadoop framework, that allows distributed processing of large data sets across clusters of computers They are the sponsors of Apache Software Foundation Founded in June 2011 by Yahoo and Benchmark capital as an independent company. It went public on December 2014 Below are the list of company collaborated with Hortonworks Microsoft on October 2011 to develop Azure & Window server Infomatica on November 2011 to develop HParser Teradata on February 2012 to develop Aster data system SAP AG on September 2012 announced it would resell Hortonworks distribution 6/16/2015 Hortonworks
- 20. About Cloudera Clouderais “The commercial Hadoop company” Founded by leading experts on Hadoop from Facebook, Google, Oracle and Yahoo Provides consulting and training services for Hadoop users Staff includes several committers to Hadoop projects 6/16/2015 20
- 21. HaaS example Amazon WebServices(AWS) -Amazon Elastic MapReduce (EMR) providing Hadoop based platform for data analysis with S3 as the storage system and EC2 as the compute system Microsoft HDInsight, Cloudera CDH3, IBM Infoshpere BigInsights, EMC GreenPlum HD and Windows Azure HDInsight Service are the primary HaaS services by global IT giants
- 22. What is MapReduceUsed For? In research: Analyzing Wikipedia conflicts (PARC) Natural language processing (CMU) Climate simulation (Washington) Bioinformatics (Maryland) Particle physics (Nebraska) <Your application here>
- 23. Example: Word Count defmapper(line): foreach word in line.split(): output(word, 1) def reducer(key, values): output(key, sum(values))
- 24. Key Cloud SolutionProviders for Hadoop as A Service • Windows azure • Aws • Google
- 25. Windows Azure Enterprise-levelon-demand capacity builder Fabric of cycles and storage available on-request for a cost You have to use Azure API to work with the infrastructure offered by Microsoft Significant features: web role, worker role , blob storage, table and drive-storage 25
- 26. Amazon EC2 EC2provided an API for instantiating computing instances with any of the operating systems supported. Excellent distribution, load balancing, cloud monitoring tools 26
- 27. Google App Engine Google offers the same reliability, availability and scalability at par with Google’s own applications 27
- 28. MapReduce Engine MapReducerequires a distributed file system and an engine that can distribute, coordinate, monitor and gather the results. Hadoop provides that engine through (the file system we discussed earlier) and the JobTracker + TaskTracker system. JobTracker is simply a scheduler. TaskTracker is assigned a Map or Reduce (or other operations); Map or Reduce run on node and so is the TaskTracker; each task is run on its own JVM on a node. 28
- 29. Building a CustomMapReduce Job in .NET A .NET map-reduce program comprises a number of parts Job definition Mapper, Reducer, and Combiner classes Input data Job executor
- 38. References & FurtherReading
- 39. References & FurtherReading https://azure.microsoft.com/en- us/documentation/articles/hdinsight-use- mapreduce/ https://azure.microsoft.com/en- us/documentation/articles/hdinsight-apache-spark- zeppelin-notebook-jupyter-spark-sql/ https://azure.microsoft.com/en- us/services/machine-learning/
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Editor's Notes
- #37 The Map() function alone is enough for a simple calculation like determining square roots. So your Reducer class would not have any processing code or logic in this case. You can choose to omit it because Reduce and Combine are optional operations in a MapReduce job. However, it is a good practice to have the skeleton class for the Reducer, which derives from the ReducerCombinerBase .NET Framework class, as shown in You can write your code in the overridden Reduce() method later if you need to implement any reduce operations.