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Introduction To Hadoop
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Marc Cluet
June 18, 2013
Technology
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Introduction To Hadoop
Marc Cluet
June 18, 2013
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Transcript
Marc Cluet – Lynx Consultants What’s behind Big Data
What we’ll cover? ¡ Understand Hadoop components ¡ Understand
different technologies involved ¡ Embrace Big Data! Lynx Consultants © 2013
What is Big Data? Lynx Consultants © 2013
What is Big Data? ¡ SQL has a limited ability
to process changing data § SQL schemas are the truth, data needs to fit that Lynx Consultants © 2013
What is Big Data? ¡ Big Data is the solution!
§ Data can be truly dynamic Lynx Consultants © 2013
What is Big Data? ¡ Big Data is the solution!
§ Data can be truly dynamic § Designed to handle Terabytes of data Lynx Consultants © 2013
What is Big Data? ¡ Big Data is the solution!
§ Data can be truly dynamic § Designed to handle Terabytes of data § Designed for fault tolerance and securing data Lynx Consultants © 2013
What is Big Data? ¡ Big Data is the solution!
§ Data can be truly dynamic § Designed to handle Terabytes of data § Designed for fault tolerance and securing data § Designed around exploiting hardware to the fullest Lynx Consultants © 2013
What is Big Data? ¡ Big Data is the solution!
§ Data can be truly dynamic § Designed to handle Terabytes of data § Designed for fault tolerance and securing data § Designed around exploiting hardware to the fullest § Designed around Map/Reduce Lynx Consultants © 2013
Who runs Big Data? ¡ A few small companies
Lynx Consultants © 2013
Who runs Big Data? ¡ A few small companies
Lynx Consultants © 2013
Who runs Big Data? ¡ A few small companies
Lynx Consultants © 2013
Who runs Big Data? ¡ A few small companies
Lynx Consultants © 2013
Who runs Big Data? ¡ A few small companies
Lynx Consultants © 2013
Who runs Big Data? ¡ A few small companies
Lynx Consultants © 2013
Who runs Big Data? ¡ A few small companies
Lynx Consultants © 2013
Who runs Big Data? ¡ A few small companies
Lynx Consultants © 2013
Who runs Big Data? ¡ A few small companies
Lynx Consultants © 2013
Who runs Big Data? ¡ A few small companies
Lynx Consultants © 2013
Who runs Big Data? ¡ A few small companies
Lynx Consultants © 2013
Who runs Big Data? ¡ A few small companies
Lynx Consultants © 2013
What is Hadoop? Lynx Consultants © 2013
What is Hadoop? ¡ Hadoop is one of the big
players for Big Data § Developed as an Open Source implementation to implement Google BigTable Lynx Consultants © 2013
What is Hadoop? ¡ Hadoop is one of the big
players for Big Data § Developed as an Open Source implementation to implement Google BigTable § Mainly developed at Yahoo! Lynx Consultants © 2013
What is Hadoop? ¡ Hadoop is one of the big
players for Big Data § Developed as an Open Source implementation to implement Google BigTable § Mainly developed at Yahoo! § Current companies behind it: Hortonworks and Cloudera Lynx Consultants © 2013
What are the features of Hadoop? ¡ HDFS – Hadoop
Distributed File System § HDFS is a distributed filesystem across many nodes § Has many copies of your data (default: 3) § If one node goes down makes sure all the data is rebalanced Lynx Consultants © 2013
What are the features of Hadoop? ¡ HDFS – Hadoop
Distributed File System Lynx Consultants © 2013
What are the features of Hadoop? ¡ HDFS – Hadoop
Distributed File System ¡ Hbase – Hadoop NoSQL Database § Schemaless Key-‐Value storage § All data exportable in JSON Lynx Consultants © 2013
What are the features of Hadoop? ¡ HDFS – Hadoop
Distributed File System ¡ Hbase – Hadoop NoSQL Database Lynx Consultants © 2013
What are the features of Hadoop? ¡ HDFS – Hadoop
Distributed File System ¡ Hbase – Hadoop NoSQL Database ¡ Map/Reduce – The key to it all § This was invented by Google § Given a dataset we Map all that match a criteria § Then we Reduce this to a result Lynx Consultants © 2013
What are the features of Hadoop? ¡ Map/Reduce – The
key to it all Lynx Consultants © 2013
What are the features of Hadoop? ¡ HDFS – Hadoop
Distributed File System ¡ Hbase – Hadoop NoSQL Database ¡ Map/Reduce – The key to it all ¡ Hive – SQL for NoSQL § Hive provides a SQL language called HiveSQL § Provides a good entrance for SQL users :) Lynx Consultants © 2013
What are the features of Hadoop? ¡ HDFS – Hadoop
Distributed File System ¡ Hbase – Hadoop NoSQL Database ¡ Map/Reduce – The key to it all ¡ Hive – SQL for NoSQL ¡ Pig – Map/Reduce made easy § Creates data results given a reduced language § Reinvents SQL somehow Lynx Consultants © 2013
What are the features of Hadoop? ¡ Hive Lynx
Consultants © 2013
What are the features of Hadoop? ¡ Pig Lynx
Consultants © 2013
What are the features of Hadoop? ¡ HDFS – Hadoop
Distributed File System ¡ Hbase – Hadoop NoSQL Database ¡ Map/Reduce – The key to it all ¡ Hive – SQL for NoSQL ¡ Pig – Map/Reduce made easy ¡ Flume – Fault Tolerant transport Lynx Consultants © 2013
What are the features of Hadoop? ¡ Flume §
Divides in Sources, Channels, Sinks § Can have multiple of everything, makes it fault tolerant § Many sources! ▪ Avro, Exec, JMS, Syslog, HTTP, NetCat, Your Own (Java) Lynx Consultants © 2013
What are the features of Hadoop? ¡ Flume §
Divides in Sources, Channels, Sinks § Can have multiple of everything, makes it fault tolerant § Many sources! § Many channels! ▪ Memory, File, Your Own (Java) Lynx Consultants © 2013
What are the features of Hadoop? ¡ Flume §
Divides in Sources, Channels, Sinks § Can have multiple of everything, makes it fault tolerant § Many sources! § Many channels! § Many sinks! ▪ Avro, HDFS, Logger, IRC, File, Hbase, ElasticSearch, S3, Community sinks, Your Own (Java) Lynx Consultants © 2013
What are the features of Hadoop? ¡ Flume Lynx
Consultants © 2013
How Hadoop looks like in a DC ¡ Components
§ Primary Namenode § Secondary Namenode § Data Node Lynx Consultants © 2013
How Hadoop looks like in a DC ¡ Components
§ Primary Namenode ▪ Controls all the cluster, knows where the data resides ▪ Runs the job tracker to keep track of Map/Reduce jobs ▪ Biggest point of failure, shadowing it is a potential option § Secondary Namenode § Data Node Lynx Consultants © 2013
How Hadoop looks like in a DC ¡ Components
§ Primary Namenode § Secondary Namenode ▪ Performs secondary cleanup options § Data Node Lynx Consultants © 2013
How Hadoop looks like in a DC ¡ Components
§ Primary Namenode § Secondary Namenode § Data Node ▪ Stores all the information ▪ Runs Map/Reduce Lynx Consultants © 2013
How Hadoop looks like in a DC ¡ Components
Lynx Consultants © 2013
Questions? Lynx Consultants © 2013