Hive was initially developed by Facebook to manage large amounts of data stored in HDFS. It uses a SQL-like query language called HiveQL to analyze structured and semi-structured data. Hive compiles HiveQL queries into MapReduce jobs that are executed on a Hadoop cluster. It provides mechanisms for partitioning, bucketing, and sorting data to optimize query performance.
In this session you will learn:
HIVE Overview
Working of Hive
Hive Tables
Hive - Data Types
Complex Types
Hive Database
HiveQL - Select-Joins
Different Types of Join
Partitions
Buckets
Strict Mode in Hive
Like and Rlike in Hive
Hive UDF
For more information, visit: https://www.mindsmapped.com/courses/big-data-hadoop/hadoop-developer-training-a-step-by-step-tutorial/
HDFS is a Java-based file system that provides scalable and reliable data storage, and it was designed to span large clusters of commodity servers. HDFS has demonstrated production scalability of up to 200 PB of storage and a single cluster of 4500 servers, supporting close to a billion files and blocks.
Hive Tutorial | Hive Architecture | Hive Tutorial For Beginners | Hive In Had...Simplilearn
This presentation about Hive will help you understand the history of Hive, what is Hive, Hive architecture, data flow in Hive, Hive data modeling, Hive data types, different modes in which Hive can run on, differences between Hive and RDBMS, features of Hive and a demo on HiveQL commands. Hive is a data warehouse system which is used for querying and analyzing large datasets stored in HDFS. Hive uses a query language called HiveQL which is similar to SQL. Hive issues SQL abstraction to integrate SQL queries (like HiveQL) into Java without the necessity to implement queries in the low-level Java API. Now, let us get started and understand Hadoop Hive in detail
Below topics are explained in this Hive presetntation:
1. History of Hive
2. What is Hive?
3. Architecture of Hive
4. Data flow in Hive
5. Hive data modeling
6. Hive data types
7. Different modes of Hive
8. Difference between Hive and RDBMS
9. Features of Hive
10. Demo on HiveQL
What is this Big Data Hadoop training course about?
The Big Data Hadoop and Spark developer course have been designed to impart in-depth knowledge of Big Data processing using Hadoop and Spark. The course is packed with real-life projects and case studies to be executed in the CloudLab.
What are the course objectives?
This course will enable you to:
1. Understand the different components of the Hadoop ecosystem such as Hadoop 2.7, Yarn, MapReduce, Pig, Hive, Impala, HBase, Sqoop, Flume, and Apache Spark
2. Understand Hadoop Distributed File System (HDFS) and YARN as well as their architecture, and learn how to work with them for storage and resource management
3. Understand MapReduce and its characteristics, and assimilate some advanced MapReduce concepts
4. Get an overview of Sqoop and Flume and describe how to ingest data using them
5. Create database and tables in Hive and Impala, understand HBase, and use Hive and Impala for partitioning
6. Understand different types of file formats, Avro Schema, using Arvo with Hive, and Sqoop and Schema evolution
7. Understand Flume, Flume architecture, sources, flume sinks, channels, and flume configurations
8. Understand HBase, its architecture, data storage, and working with HBase. You will also understand the difference between HBase and RDBMS
9. Gain a working knowledge of Pig and its components
10. Do functional programming in Spark
11. Understand resilient distribution datasets (RDD) in detail
12. Implement and build Spark applications
13. Gain an in-depth understanding of parallel processing in Spark and Spark RDD optimization techniques
14. Understand the common use-cases of Spark and the various interactive algorithms
15. Learn Spark SQL, creating, transforming, and querying Data frames
Learn more at https://www.simplilearn.com/big-data-and-analytics/big-data-and-hadoop-training
Apache Sqoop efficiently transfers bulk data between Apache Hadoop and structured datastores such as relational databases. Sqoop helps offload certain tasks (such as ETL processing) from the EDW to Hadoop for efficient execution at a much lower cost. Sqoop can also be used to extract data from Hadoop and export it into external structured datastores. Sqoop works with relational databases such as Teradata, Netezza, Oracle, MySQL, Postgres, and HSQLDB
This presentation is one of my talks at "Global Big Data Conference" held in end of January'14. This presentation is mainly targeted the audience to let them understand overview of Hive and getting hands-on-experience on Hive Query Language. The overview part focuses on What is the need for Hive? Hive Architecture, Hive Components, Hive Query Language, and many others.
In this session you will learn:
HIVE Overview
Working of Hive
Hive Tables
Hive - Data Types
Complex Types
Hive Database
HiveQL - Select-Joins
Different Types of Join
Partitions
Buckets
Strict Mode in Hive
Like and Rlike in Hive
Hive UDF
For more information, visit: https://www.mindsmapped.com/courses/big-data-hadoop/hadoop-developer-training-a-step-by-step-tutorial/
HDFS is a Java-based file system that provides scalable and reliable data storage, and it was designed to span large clusters of commodity servers. HDFS has demonstrated production scalability of up to 200 PB of storage and a single cluster of 4500 servers, supporting close to a billion files and blocks.
Hive Tutorial | Hive Architecture | Hive Tutorial For Beginners | Hive In Had...Simplilearn
This presentation about Hive will help you understand the history of Hive, what is Hive, Hive architecture, data flow in Hive, Hive data modeling, Hive data types, different modes in which Hive can run on, differences between Hive and RDBMS, features of Hive and a demo on HiveQL commands. Hive is a data warehouse system which is used for querying and analyzing large datasets stored in HDFS. Hive uses a query language called HiveQL which is similar to SQL. Hive issues SQL abstraction to integrate SQL queries (like HiveQL) into Java without the necessity to implement queries in the low-level Java API. Now, let us get started and understand Hadoop Hive in detail
Below topics are explained in this Hive presetntation:
1. History of Hive
2. What is Hive?
3. Architecture of Hive
4. Data flow in Hive
5. Hive data modeling
6. Hive data types
7. Different modes of Hive
8. Difference between Hive and RDBMS
9. Features of Hive
10. Demo on HiveQL
What is this Big Data Hadoop training course about?
The Big Data Hadoop and Spark developer course have been designed to impart in-depth knowledge of Big Data processing using Hadoop and Spark. The course is packed with real-life projects and case studies to be executed in the CloudLab.
What are the course objectives?
This course will enable you to:
1. Understand the different components of the Hadoop ecosystem such as Hadoop 2.7, Yarn, MapReduce, Pig, Hive, Impala, HBase, Sqoop, Flume, and Apache Spark
2. Understand Hadoop Distributed File System (HDFS) and YARN as well as their architecture, and learn how to work with them for storage and resource management
3. Understand MapReduce and its characteristics, and assimilate some advanced MapReduce concepts
4. Get an overview of Sqoop and Flume and describe how to ingest data using them
5. Create database and tables in Hive and Impala, understand HBase, and use Hive and Impala for partitioning
6. Understand different types of file formats, Avro Schema, using Arvo with Hive, and Sqoop and Schema evolution
7. Understand Flume, Flume architecture, sources, flume sinks, channels, and flume configurations
8. Understand HBase, its architecture, data storage, and working with HBase. You will also understand the difference between HBase and RDBMS
9. Gain a working knowledge of Pig and its components
10. Do functional programming in Spark
11. Understand resilient distribution datasets (RDD) in detail
12. Implement and build Spark applications
13. Gain an in-depth understanding of parallel processing in Spark and Spark RDD optimization techniques
14. Understand the common use-cases of Spark and the various interactive algorithms
15. Learn Spark SQL, creating, transforming, and querying Data frames
Learn more at https://www.simplilearn.com/big-data-and-analytics/big-data-and-hadoop-training
Apache Sqoop efficiently transfers bulk data between Apache Hadoop and structured datastores such as relational databases. Sqoop helps offload certain tasks (such as ETL processing) from the EDW to Hadoop for efficient execution at a much lower cost. Sqoop can also be used to extract data from Hadoop and export it into external structured datastores. Sqoop works with relational databases such as Teradata, Netezza, Oracle, MySQL, Postgres, and HSQLDB
This presentation is one of my talks at "Global Big Data Conference" held in end of January'14. This presentation is mainly targeted the audience to let them understand overview of Hive and getting hands-on-experience on Hive Query Language. The overview part focuses on What is the need for Hive? Hive Architecture, Hive Components, Hive Query Language, and many others.
Big Data raises challenges about how to process such vast pool of raw data and how to aggregate value to our lives. For addressing these demands an ecosystem of tools named Hadoop was conceived.
This presentation describes how to efficiently load data into Hive. I cover partitioning, predicate pushdown, ORC file optimization and different loading schemes
Concepts of Apache Hive in Big Data.
contains:
what is hive?
why hive?
how hive works
hive Architecture
data models in hive
pros and cons of hive
hiveql
pig vs hive
This presentation about Hadoop YARN will help you understand the Hadoop 1.0 and Hadoop 2.0, limitations of Hadoop 1.0, need for YARN, what is YARN, workloads running on YARN, YARN components, YARN architecture and you will also go through a demo on YARN. YARN is the cluster resource management layer of the Apache Hadoop Ecosystem, which schedules jobs and assigns resources. Hadoop 1.0 is designed to run MapReduce jobs only and had issues in scalability, resource utilization, etc. whereas YARN solved those issues and users could work on multiple processing models. Now let us get started and learn YARN in detail.
Below topics are explained in this Hadoop YARN presentation:
1. Hadoop 1.0 (MapReduce 1)
2. Limitations of Hadoop 1.0 (MapReduce 1)
3. Need for YARN
4. What is YARN
5. Workloads running on YARN
6. YARN components
7. YARN architecture
8. Demo on YARN
What is this Big Data Hadoop training course about?
The Big Data Hadoop and Spark developer course have been designed to impart an in-depth knowledge of Big Data processing using Hadoop and Spark. The course is packed with real-life projects and case studies to be executed in the CloudLab.
What are the course objectives?
This course will enable you to:
1. Understand the different components of the Hadoop ecosystem such as Hadoop 2.7, Yarn, MapReduce, Pig, Hive, Impala, HBase, Sqoop, Flume, and Apache Spark
2. Understand Hadoop Distributed File System (HDFS) and YARN as well as their architecture, and learn how to work with them for storage and resource management
3. Understand MapReduce and its characteristics, and assimilate some advanced MapReduce concepts
4. Get an overview of Sqoop and Flume and describe how to ingest data using them
5. Create database and tables in Hive and Impala, understand HBase, and use Hive and Impala for partitioning
6. Understand different types of file formats, Avro Schema, using Arvo with Hive, and Sqoop and Schema evolution
7. Understand Flume, Flume architecture, sources, flume sinks, channels, and flume configurations
8. Understand HBase, its architecture, data storage, and working with HBase. You will also understand the difference between HBase and RDBMS
9. Gain a working knowledge of Pig and its components
10. Do functional programming in Spark
11. Understand resilient distribution datasets (RDD) in detail
12. Implement and build Spark applications
13. Gain an in-depth understanding of parallel processing in Spark and Spark RDD optimization techniques
14. Understand the common use-cases of Spark and the various interactive algorithms
15. Learn Spark SQL, creating, transforming, and querying Data frames
Learn more at https://www.simplilearn.com/big-data-and-analytics/big-data-and-hadoop-training
Apache Spark is a In Memory Data Processing Solution that can work with existing data source like HDFS and can make use of your existing computation infrastructure like YARN/Mesos etc. This talk will cover a basic introduction of Apache Spark with its various components like MLib, Shark, GrpahX and with few examples.
Hadoop Training | Hadoop Training For Beginners | Hadoop Architecture | Hadoo...Simplilearn
This presentation about Hadoop training will help you understand the need for Hadoop, what is Hadoop and concepts including Hadoop ecosystem, Hadoop features, how HDFS works, what is MapReduce and how YARN works. Finally, we will implement a banking case study using Hadoop. To solve the issue of rapidly increasing data, we need big data technologies such as Hadoop, Spark, Storm, Cassandra and many more. Hadoop can store and process vast volumes of data. You will understand the architecture of HDFS, MapReduce workflow and the architecture of YARN. In the demo, you will learn in detail on how to export data from RDBMS (MySQL) into HDFS using Sqoop commands. Now, let us get started and gain expertise with Hadoop training video.
Below topics are explained in this Hadoop training presentation:
1. Need for Hadoop
2. What is Hadoop
3. Hadoop ecosystem
4. Hadoop features
5. What is HDFS
6. What is MapReduce
7. What is YARN
8. Bank case study
What is this Big Data Hadoop training course about?
The Big Data Hadoop and Spark developer course have been designed to impart an in-depth knowledge of Big Data processing using Hadoop and Spark. The course is packed with real-life projects and case studies to be executed in the CloudLab.
What are the course objectives?
This course will enable you to:
1. Understand the different components of Hadoop ecosystem such as Hadoop 2.7, Yarn, MapReduce, Pig, Hive, Impala, HBase, Sqoop, Flume, and Apache Spark
2. Understand Hadoop Distributed File System (HDFS) and YARN as well as their architecture, and learn how to work with them for storage and resource management
3. Understand MapReduce and its characteristics, and assimilate some advanced MapReduce concepts
4. Get an overview of Sqoop and Flume and describe how to ingest data using them
5. Create database and tables in Hive and Impala, understand HBase, and use Hive and Impala for partitioning
6. Understand different types of file formats, Avro Schema, using Arvo with Hive, and Sqoop and Schema evolution
7. Understand Flume, Flume architecture, sources, flume sinks, channels, and flume configurations
8. Understand HBase, its architecture, data storage, and working with HBase. You will also understand the difference between HBase and RDBMS
9. Gain a working knowledge of Pig and its components
10. Do functional programming in Spark
11. Understand resilient distribution datasets (RDD) in detail
12. Implement and build Spark applications
13. Gain an in-depth understanding of parallel processing in Spark and Spark RDD optimization techniques
14. Understand the common use-cases of Spark and the various interactive algorithms
15. Learn Spark SQL, creating, transforming, and querying Data frames
Learn more at https://www.simplilearn.com/big-data-and-analytics/big-data-and-hadoop-training
This presentation about Hadoop architecture will help you understand the architecture of Apache Hadoop in detail. In this video, you will learn what is Hadoop, components of Hadoop, what is HDFS, HDFS architecture, Hadoop MapReduce, Hadoop MapReduce example, Hadoop YARN and finally, a demo on MapReduce. Apache Hadoop offers a versatile, adaptable and reliable distributed computing big data framework for a group of systems with capacity limit and local computing power. After watching this video, you will also understand the Hadoop Distributed File System and its features along with the practical implementation.
Below are the topics covered in this Hadoop Architecture presentation:
1. What is Hadoop?
2. Components of Hadoop
3. What is HDFS?
4. HDFS Architecture
5. Hadoop MapReduce
6. Hadoop MapReduce Example
7. Hadoop YARN
8. Demo on MapReduce
What are the course objectives?
This course will enable you to:
1. Understand the different components of Hadoop ecosystem such as Hadoop 2.7, Yarn, MapReduce, Pig, Hive, Impala, HBase, Sqoop, Flume, and Apache Spark
2. Understand Hadoop Distributed File System (HDFS) and YARN as well as their architecture, and learn how to work with them for storage and resource management
3. Understand MapReduce and its characteristics, and assimilate some advanced MapReduce concepts
4. Get an overview of Sqoop and Flume and describe how to ingest data using them
5. Create database and tables in Hive and Impala, understand HBase, and use Hive and Impala for partitioning
6. Understand different types of file formats, Avro Schema, using Arvo with Hive, and Sqoop and Schema evolution
7. Understand Flume, Flume architecture, sources, flume sinks, channels, and flume configurations
8. Understand HBase, its architecture, data storage, and working with HBase. You will also understand the difference between HBase and RDBMS
9. Gain a working knowledge of Pig and its components
10. Do functional programming in Spark
11. Understand resilient distribution datasets (RDD) in detail
12. Implement and build Spark applications
13. Gain an in-depth understanding of parallel processing in Spark and Spark RDD optimization techniques
14. Understand the common use-cases of Spark and the various interactive algorithms
15. Learn Spark SQL, creating, transforming, and querying Data frames
Who should take up this Big Data and Hadoop Certification Training Course?
Big Data career opportunities are on the rise, and Hadoop is quickly becoming a must-know technology for the following professionals:
1. Software Developers and Architects
2. Analytics Professionals
3. Senior IT professionals
4. Testing and Mainframe professionals
5. Data Management Professionals
6. Business Intelligence Professionals
7. Project Managers
8. Aspiring Data Scientists
Learn more at https://www.simplilearn.com/big-data-and-analytics/big-data-and-hadoop-training
Interested in learning Hadoop, but you’re overwhelmed by the number of components in the Hadoop ecosystem? You’d like to get some hands on experience with Hadoop but you don’t know Linux or Java? This session will focus on giving a high level explanation of Hive and HiveQL and how you can use them to get started with Hadoop without knowing Linux or Java.
Presentation slides of the workshop on "Introduction to Pig" at Fifth Elephant, Bangalore, India on 26th July, 2012.
http://fifthelephant.in/2012/workshop-pig
Apache HBase™ is the Hadoop database, a distributed, salable, big data store.Its a column-oriented database management system that runs on top of HDFS.
Apache HBase is an open source NoSQL database that provides real-time read/write access to those large data sets. ... HBase is natively integrated with Hadoop and works seamlessly alongside other data access engines through YARN.
Big Data raises challenges about how to process such vast pool of raw data and how to aggregate value to our lives. For addressing these demands an ecosystem of tools named Hadoop was conceived.
This presentation describes how to efficiently load data into Hive. I cover partitioning, predicate pushdown, ORC file optimization and different loading schemes
Concepts of Apache Hive in Big Data.
contains:
what is hive?
why hive?
how hive works
hive Architecture
data models in hive
pros and cons of hive
hiveql
pig vs hive
This presentation about Hadoop YARN will help you understand the Hadoop 1.0 and Hadoop 2.0, limitations of Hadoop 1.0, need for YARN, what is YARN, workloads running on YARN, YARN components, YARN architecture and you will also go through a demo on YARN. YARN is the cluster resource management layer of the Apache Hadoop Ecosystem, which schedules jobs and assigns resources. Hadoop 1.0 is designed to run MapReduce jobs only and had issues in scalability, resource utilization, etc. whereas YARN solved those issues and users could work on multiple processing models. Now let us get started and learn YARN in detail.
Below topics are explained in this Hadoop YARN presentation:
1. Hadoop 1.0 (MapReduce 1)
2. Limitations of Hadoop 1.0 (MapReduce 1)
3. Need for YARN
4. What is YARN
5. Workloads running on YARN
6. YARN components
7. YARN architecture
8. Demo on YARN
What is this Big Data Hadoop training course about?
The Big Data Hadoop and Spark developer course have been designed to impart an in-depth knowledge of Big Data processing using Hadoop and Spark. The course is packed with real-life projects and case studies to be executed in the CloudLab.
What are the course objectives?
This course will enable you to:
1. Understand the different components of the Hadoop ecosystem such as Hadoop 2.7, Yarn, MapReduce, Pig, Hive, Impala, HBase, Sqoop, Flume, and Apache Spark
2. Understand Hadoop Distributed File System (HDFS) and YARN as well as their architecture, and learn how to work with them for storage and resource management
3. Understand MapReduce and its characteristics, and assimilate some advanced MapReduce concepts
4. Get an overview of Sqoop and Flume and describe how to ingest data using them
5. Create database and tables in Hive and Impala, understand HBase, and use Hive and Impala for partitioning
6. Understand different types of file formats, Avro Schema, using Arvo with Hive, and Sqoop and Schema evolution
7. Understand Flume, Flume architecture, sources, flume sinks, channels, and flume configurations
8. Understand HBase, its architecture, data storage, and working with HBase. You will also understand the difference between HBase and RDBMS
9. Gain a working knowledge of Pig and its components
10. Do functional programming in Spark
11. Understand resilient distribution datasets (RDD) in detail
12. Implement and build Spark applications
13. Gain an in-depth understanding of parallel processing in Spark and Spark RDD optimization techniques
14. Understand the common use-cases of Spark and the various interactive algorithms
15. Learn Spark SQL, creating, transforming, and querying Data frames
Learn more at https://www.simplilearn.com/big-data-and-analytics/big-data-and-hadoop-training
Apache Spark is a In Memory Data Processing Solution that can work with existing data source like HDFS and can make use of your existing computation infrastructure like YARN/Mesos etc. This talk will cover a basic introduction of Apache Spark with its various components like MLib, Shark, GrpahX and with few examples.
Hadoop Training | Hadoop Training For Beginners | Hadoop Architecture | Hadoo...Simplilearn
This presentation about Hadoop training will help you understand the need for Hadoop, what is Hadoop and concepts including Hadoop ecosystem, Hadoop features, how HDFS works, what is MapReduce and how YARN works. Finally, we will implement a banking case study using Hadoop. To solve the issue of rapidly increasing data, we need big data technologies such as Hadoop, Spark, Storm, Cassandra and many more. Hadoop can store and process vast volumes of data. You will understand the architecture of HDFS, MapReduce workflow and the architecture of YARN. In the demo, you will learn in detail on how to export data from RDBMS (MySQL) into HDFS using Sqoop commands. Now, let us get started and gain expertise with Hadoop training video.
Below topics are explained in this Hadoop training presentation:
1. Need for Hadoop
2. What is Hadoop
3. Hadoop ecosystem
4. Hadoop features
5. What is HDFS
6. What is MapReduce
7. What is YARN
8. Bank case study
What is this Big Data Hadoop training course about?
The Big Data Hadoop and Spark developer course have been designed to impart an in-depth knowledge of Big Data processing using Hadoop and Spark. The course is packed with real-life projects and case studies to be executed in the CloudLab.
What are the course objectives?
This course will enable you to:
1. Understand the different components of Hadoop ecosystem such as Hadoop 2.7, Yarn, MapReduce, Pig, Hive, Impala, HBase, Sqoop, Flume, and Apache Spark
2. Understand Hadoop Distributed File System (HDFS) and YARN as well as their architecture, and learn how to work with them for storage and resource management
3. Understand MapReduce and its characteristics, and assimilate some advanced MapReduce concepts
4. Get an overview of Sqoop and Flume and describe how to ingest data using them
5. Create database and tables in Hive and Impala, understand HBase, and use Hive and Impala for partitioning
6. Understand different types of file formats, Avro Schema, using Arvo with Hive, and Sqoop and Schema evolution
7. Understand Flume, Flume architecture, sources, flume sinks, channels, and flume configurations
8. Understand HBase, its architecture, data storage, and working with HBase. You will also understand the difference between HBase and RDBMS
9. Gain a working knowledge of Pig and its components
10. Do functional programming in Spark
11. Understand resilient distribution datasets (RDD) in detail
12. Implement and build Spark applications
13. Gain an in-depth understanding of parallel processing in Spark and Spark RDD optimization techniques
14. Understand the common use-cases of Spark and the various interactive algorithms
15. Learn Spark SQL, creating, transforming, and querying Data frames
Learn more at https://www.simplilearn.com/big-data-and-analytics/big-data-and-hadoop-training
This presentation about Hadoop architecture will help you understand the architecture of Apache Hadoop in detail. In this video, you will learn what is Hadoop, components of Hadoop, what is HDFS, HDFS architecture, Hadoop MapReduce, Hadoop MapReduce example, Hadoop YARN and finally, a demo on MapReduce. Apache Hadoop offers a versatile, adaptable and reliable distributed computing big data framework for a group of systems with capacity limit and local computing power. After watching this video, you will also understand the Hadoop Distributed File System and its features along with the practical implementation.
Below are the topics covered in this Hadoop Architecture presentation:
1. What is Hadoop?
2. Components of Hadoop
3. What is HDFS?
4. HDFS Architecture
5. Hadoop MapReduce
6. Hadoop MapReduce Example
7. Hadoop YARN
8. Demo on MapReduce
What are the course objectives?
This course will enable you to:
1. Understand the different components of Hadoop ecosystem such as Hadoop 2.7, Yarn, MapReduce, Pig, Hive, Impala, HBase, Sqoop, Flume, and Apache Spark
2. Understand Hadoop Distributed File System (HDFS) and YARN as well as their architecture, and learn how to work with them for storage and resource management
3. Understand MapReduce and its characteristics, and assimilate some advanced MapReduce concepts
4. Get an overview of Sqoop and Flume and describe how to ingest data using them
5. Create database and tables in Hive and Impala, understand HBase, and use Hive and Impala for partitioning
6. Understand different types of file formats, Avro Schema, using Arvo with Hive, and Sqoop and Schema evolution
7. Understand Flume, Flume architecture, sources, flume sinks, channels, and flume configurations
8. Understand HBase, its architecture, data storage, and working with HBase. You will also understand the difference between HBase and RDBMS
9. Gain a working knowledge of Pig and its components
10. Do functional programming in Spark
11. Understand resilient distribution datasets (RDD) in detail
12. Implement and build Spark applications
13. Gain an in-depth understanding of parallel processing in Spark and Spark RDD optimization techniques
14. Understand the common use-cases of Spark and the various interactive algorithms
15. Learn Spark SQL, creating, transforming, and querying Data frames
Who should take up this Big Data and Hadoop Certification Training Course?
Big Data career opportunities are on the rise, and Hadoop is quickly becoming a must-know technology for the following professionals:
1. Software Developers and Architects
2. Analytics Professionals
3. Senior IT professionals
4. Testing and Mainframe professionals
5. Data Management Professionals
6. Business Intelligence Professionals
7. Project Managers
8. Aspiring Data Scientists
Learn more at https://www.simplilearn.com/big-data-and-analytics/big-data-and-hadoop-training
Interested in learning Hadoop, but you’re overwhelmed by the number of components in the Hadoop ecosystem? You’d like to get some hands on experience with Hadoop but you don’t know Linux or Java? This session will focus on giving a high level explanation of Hive and HiveQL and how you can use them to get started with Hadoop without knowing Linux or Java.
Presentation slides of the workshop on "Introduction to Pig" at Fifth Elephant, Bangalore, India on 26th July, 2012.
http://fifthelephant.in/2012/workshop-pig
Apache HBase™ is the Hadoop database, a distributed, salable, big data store.Its a column-oriented database management system that runs on top of HDFS.
Apache HBase is an open source NoSQL database that provides real-time read/write access to those large data sets. ... HBase is natively integrated with Hadoop and works seamlessly alongside other data access engines through YARN.
Jump Start into Apache Spark (Seattle Spark Meetup)Denny Lee
Denny Lee, Technology Evangelist with Databricks, will demonstrate how easily many Data Sciences and Big Data (and many not-so-Big Data) scenarios easily using Apache Spark. This introductory level jump start will focus on user scenarios; it will be demo heavy and slide light!
Performance Optimization Case Study: Shattering Hadoop's Sort Record with Spa...Databricks
Performance Optimization Case Study: Shattering Hadoop's Sort Record with Spark and Scala
Talk given by Reynold Xin at Scala Days SF 2015
In this talk, Reynold talks about the underlying techniques used to achieve high performance sorting using Spark and Scala, among which are sun.misc.Unsafe, exploiting cache locality, high-level resource pipelining.
Scala: Pattern matching, Concepts and ImplementationsMICHRAFY MUSTAFA
In the following slides, we attempt to present the pattern matching and its implementation in Scala.
The concepts introduced are: Basic pattern matching, Pattern alternative, Pattern guards, Pattern matching and recursive function, Typed patterns, Tuple patterns, Matching on option, Matching on immutable collection, Matching on List, Matching on case class, Nested pattern matching in case classes, and
Matching on regular expression.
Scala eXchange: Building robust data pipelines in ScalaAlexander Dean
Over the past couple of years, Scala has become a go-to language for building data processing applications, as evidenced by the emerging ecosystem of frameworks and tools including LinkedIn's Kafka, Twitter's Scalding and our own Snowplow project (https://github.com/snowplow/snowplow).
In this talk, Alex will draw on his experiences at Snowplow to explore how to build rock-sold data pipelines in Scala, highlighting a range of techniques including:
* Translating the Unix stdin/out/err pattern to stream processing
* "Railway oriented" programming using the Scalaz Validation
* Validating data structures with JSON Schema
* Visualizing event stream processing errors in ElasticSearch
Alex's talk draws on his experiences working with event streams in Scala over the last two and a half years at Snowplow, and by Alex's recent work penning Unified Log Processing, a Manning book.
Hive Training -- Motivations and Real World Use Casesnzhang
Hive is an open source data warehouse systems based on Hadoop, a MapReduce implementation.
This presentation introduces the motivations of developing Hive and how Hive is used in the real world situation, particularly in Facebook.
Data Explosion
- TBs of data generated everyday
Solution – HDFS to store data and Hadoop Map-Reduce framework to parallelize processing of Data
What is the catch?
Hadoop Map Reduce is Java intensive
Thinking in Map Reduce paradigm can get tricky
Scaling Storage and Computation with Hadoopyaevents
Hadoop provides a distributed storage and a framework for the analysis and transformation of very large data sets using the MapReduce paradigm. Hadoop is partitioning data and computation across thousands of hosts, and executes application computations in parallel close to their data. A Hadoop cluster scales computation capacity, storage capacity and IO bandwidth by simply adding commodity servers. Hadoop is an Apache Software Foundation project; it unites hundreds of developers, and hundreds of organizations worldwide report using Hadoop. This presentation will give an overview of the Hadoop family projects with a focus on its distributed storage solutions
In this introduction to Apache Hive the following topics are covered:
1. Hive Introduction
2. Hive origin
3. Where does Hive fall in Big Data stack
4. Hive architecture
5. Tts job execution mechanisms
6. HiveQL and Hive Shell
7 Types of tables
8. Querying data
9. Partitioning
10. Bucketing
11. Pros
12. Limitations of Hive
Cloudera Impala: The Open Source, Distributed SQL Query Engine for Big Data. The Cloudera Impala project is pioneering the next generation of Hadoop capabilities: the convergence of fast SQL queries with the capacity, scalability, and flexibility of a Apache Hadoop cluster. With Impala, the Hadoop ecosystem now has an open-source codebase that helps users query data stored in Hadoop-based enterprise data hubs in real time, using familiar SQL syntax.
This talk will begin with an overview of the challenges organizations face as they collect and process more data than ever before, followed by an overview of Impala from the user's perspective and a dive into Impala's architecture. It concludes with stories of how Cloudera's customers are using Impala and the benefits they see.
Introduction to Big Data and NoSQL.
This presentation was given to the Master DBA course at John Bryce Education in Israel.
Work is based on presentations by Michael Naumov, Baruch Osoveskiy, Bill Graham and Ronen Fidel.
Apache Hive is a data warehouse infrastructure built on top of Hadoop for providing data summarization, query, and analysis. While developed by Facebook.
Tired of seeing the loading spinner of doom while trying to analyze your big data on Tableau? Learn how Jethro accelerates your database so you can interactively analyze your big data on Tableau and gain the crucial insights that you need without losing your train of thought. Jethro enables you to be completely flexible with no need for partitions in order to speed up the data. This presentation will explain how indexing is a superior architecture for the BI use case when dealing with big data while compared to MPP architecture.
Adjusting primitives for graph : SHORT REPORT / NOTESSubhajit Sahu
Graph algorithms, like PageRank Compressed Sparse Row (CSR) is an adjacency-list based graph representation that is
Multiply with different modes (map)
1. Performance of sequential execution based vs OpenMP based vector multiply.
2. Comparing various launch configs for CUDA based vector multiply.
Sum with different storage types (reduce)
1. Performance of vector element sum using float vs bfloat16 as the storage type.
Sum with different modes (reduce)
1. Performance of sequential execution based vs OpenMP based vector element sum.
2. Performance of memcpy vs in-place based CUDA based vector element sum.
3. Comparing various launch configs for CUDA based vector element sum (memcpy).
4. Comparing various launch configs for CUDA based vector element sum (in-place).
Sum with in-place strategies of CUDA mode (reduce)
1. Comparing various launch configs for CUDA based vector element sum (in-place).
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2. Origin
• Hive was Initially developed by Facebook.
• Data was stored in Oracle database every night
• ETL(Extract,Transform,Load) was performed on Data
• The Data growth was exponential
– By 2006 1TB /Day
– By 2010 10 TB /Day
– By 2013 about 5000,000,000 per day..etc
And there was a need to find some way to manage the
data “effectively”.
3. What is Hive
• Hive is a Data warehouse infrastructure built on top of
Hadoop that can compile SQL Quires as Map Reduce
jobs and run the jobs in the cluster.
• Suitable for semi and structured databases.
• Capable to deal with different storage and file formats.
• Provides HQL(SQL like Query Language)
What Hive is not
• Does not use complex indexes so do not response in
seconds
• But it scales very well , it works with data of peta byte
order
• It is not independent and its performance is tied
hadoop
4. Hive RDBMS
SQL Interface SQL Interface
Focus on analytics May focus on online or analytics.
No transactions. Transactions usually supported.
Partition adds, no random INSERTs.
In‐Place updates not natively supporte
d (but are possible).
Random INSERT and UPDATE supp
orted.
Distributed processing via map/reduce. Distributed processing varies by v
endor (if available).
Scales to hundreds of nodes . Seldom scale beyond 20 nodes.
Built for commodity hardware. Often built on proprietary hardwa
re (especially when scaling out).
Low cost per peta byte. What’s a peta byte?
5. – A Data Warehouse is a database specific for
analysis and reporting purpose.
• OLAP vs OLTP
– DW is needed in OLAP.
– We want report and Summary not live data of
transactions for continuing the operate.
– We need reports to make operations better not to
conduct and operations.
– We use ETL to populate data in DW.
Brief about Data Warehouse
6. How Hive Works?
• Hive Built on top of Hadoop
– Think HDFS and Map Reduce
• Hive stored data in the HDFS
• Hive compile SQL Quires into Map Reduce jobs
and run the jobs in the Hadoop cluster
11. Internal Components
• Compiler and Planner
– It compiles and checks the input query and create
an execution plan.
• Optimizer
– It optimizes the execution plan before it runs
• Execution Engine
– Runs the Execution plan . It is guaranteed that
execution plan is DAG.
12. • Hive Queries are implicitly converted to map-
reduce code by hive Engine
• Compiler translates all the quires into a
directed acyclic graph of map-reduce jobs
• These map-reduce jobs are send to hadoop
for execution.
13. • External Interface
– Hive Client
– Web UI
– API
• JDBC and ODBC
• Thrift Server
– Client API to execute HiveQl Statemnts
• Metastore
– System Catalog
• All Components of hive Interact with Meta store
14. • Hive Data Model
• Hive Database
– Data Model
• Hive Structure data into a well defined database concept
i.e. tables ,columns and rows ,Partitions ,buckets etc...
15.
16. Hive DataModel
• Tables
– Types columns(int,float,string,date,boolean..etc)
– Support arrs/Map/struct for JSON like data
• Partitions
– i.e range partitions tables by date
• Buckets
– Has Partition within ranges
• Useful for sampling ,join optimization
17. metastore
• Database
– Namespace containing a set of tables
• Table
– Contains list of columns and their types and serDe info
• Partition
– Each partition can have its own columns , SerDe and
storage info
– Mapping to HDF Directories
• Statistics
– Info about the databse
18. Hive Physical Layout
• Warehouse Directory in HDFS
– /user/hive/warehouse
• Tables row data is stored in warehouse
subdirectories
• Partition creates subdirectories within table
directories
• Actual data is stored in flat files
– Control char-delimited text
– Or Sequence Files
– With Custom Serializer /Deserializer (SerDe), files can
use arbitrary format
19. • Normal Tables are created under warehouse
directory. (source Data migrates to warehouse)
• Normal Tables are directly visible through hdfs
directory browsing.
• On Dropping a normal table, the source data and
table meta data both are deleted.
• External Tables read directly from hdfs files.
• External tables not visible in warehouse directory.
• On Dropping an external table, only the meta
data is deleted but not the source data.
20. • Hive QL supports Joins on only equality
expressions. Complex boolean expressions,
inequality conditions are not supported.
• More than 2 tables can be joined.
• Number of map-reduce jobs generated for a
join depend on the columns being used.
• If same col is used for all the tables, then n=1
• Otherwise n>1
• HiveQL Doesn’t follow SQL-92 standard
• Lack support No Materialized views
• No Transaction level support
• Limited Sub-query support
21. Quick Refresher on Joins
First Last Id
Ram C 11341
Sita B 11342
Lak D 11343
Man K 10045
cid price Quantity
1041 200.40 3
11341 4534.34 4
11345 2345.45 3
11341 2346.45 6
customer customer
SELECT * FROM customer join order ON customer.id = order.cid;
Joins match values from one table against values in another table.
22. Hive Join Strategies
Type Approach Pros Cons
Shuffle Join . Join keys are shuffled using
map/reduce and joins perf
ormed join
side
Works regardless
of data size or
layout.
Most resource‐
intensive and slo
west join type.
Broadcast Join Small tables are loaded into
memory in all nodes, ma
pper scans through the larg
e table and joins.
Very fast, single s
can through large
st table.
All but one table
must be small e
nough to fit in R
AM.
Sort-‐ Merge-‐
Bucket Join
Mappers take advantage of
co‐loca1on of keys to do
efficient joins.
Very fast for tabl
es of any size.
Data must be sor
ted and bucketed
ahead of time.
23. Shuffle Joins in Map Reduce
First Last Id
Ram C 11341
Sita B 11342
Lak D 11343
Man K 10045
cid price Quantity
1041 200.40 3
11341 4534.34 4
11341 2346.45 6
11345 2345.45 3
customer customer
Iden1cal keys shuffled to the same reducer. Join done reduce‐side. Expensive
from a network u1liza1on standpoint.
24. • Star schemas use dimension tables small
enough to fit in RAM.
• Small tables held in memory by all nodes.
• Single pass through the large table.
• Used for star-schema type joins common in
DW.
25.
26.
27.
28. Controlling Data Locality with Hive
• Bucketing:
• Hash partition values into a configurable number of
buckets.
• Usually coupled with sorting.
• Skews:
• Split values out into separate files.
• Used when certain values are frequently seen.
Replication Factor:
• Increase replication factor to accelerate reads.
• Controlled at the HDFS layer.
• Sorting:
• Sort the values within given columns.
• Greatly accelerates query when used with ORCFile filter
pushdown.
31. Loading Data in Hive
• Sqoop
– Data transfer from external RDBMS to Hive.
– Sqoop can load data directly to/from HCatalog.
• Hive LOAD
– Load files from HDFS or local file system.
– Format must agree with table format.
• Insert from query
– CREATE TABLE AS SELECT or INSERT INTO.
• WebHDFS + WebHCat
– Load data via REST APIs.
32. ACID Properties
• Data loaded into Hive partition- or table-at-a-time.
– No INSERT or UPDATE statement. No transactions.
• Atomicity:
– Partition loads are atomic through directory renames in HDFS.
• Consistency:
– Ensured by HDFS. All nodes see the same partitions at all times.
– Immutable data = no update or delete consistency issues.
• Isolation:
– Read committed with an exception for partition deletes.
– Partitions can be deleted during queries. New partitions will not
be seen by jobs started before the partition add.
• Durability:
– Data is durable in HDFS before partition exposed to Hive.
33. Handling Semi-Structured Data
• Hive supports arrays, maps, structs and
unions.
• SerDes map JSON, XML and other formats
natively into Hive.
34. Join Optimizations
• Performance Improvements in Hive 0.11:
• New Join Types added or improved in Hive 0.11:
– In-memory Hash Join: Fast for fact-to-dimension joins.
– Sort-Merge-Bucket Join: Scalable for large-table to
large-table joins.
• More Efficient Query Plan Generation
– Joins done in-memory when possible, saving map-
reduce steps.
– Combine map/reduce jobs when GROUP BY and
ORDER BY use the same key.
• More Than 30x Performance Improvement for
Star Schema Join
35.
36. Fundamental Questions
• What is your primary use case?
– What kind of queries and filters?
• How do you need to access the data?
– What information do you need together?
• How much data do you have?
– What is your year to year growth?
• How do you get the data?
37. HDFS Characteristics
• Provides Distributed File System
– Very high aggregate bandwidth
– Extreme scalability (up to 100 PB)
– Self-healing storage
– Relatively simple to administer
• Limitations
– Can’t modify existing files
– Single writer for each file
– Heavy bias for large files ( > 100 MB)
38. Choices for Layout
• Partitions
– Top level mechanism for pruning
– Primary unit for updating tables (& schema)
– Directory per value of specified column
• Bucketing
– Hashed into a file, good for sampling
– Controls write parallelism
• Sort order
– The order the data is written within file
39. Example Hive Layout
• Directory Structure
warehouse/$database/$table
• Partitioning
/part1=$partValue/part2=$partValue
• Bucketing
/$bucket_$attempt (eg. 000000_0)
• Sort
– Each file is sorted within the file
40. Layout Guidelines
• Limit the number of partitions
– 1,000 partitions is much faster than 10,000
– Nested partitions are almost always wrong
• Gauge the number of buckets
– Calculate file size and keep big (200-500MB)
– Don’t forget number of files (Buckets * Parts)
• Layout related tables the same way
– Partition
– Bucket and sort order
41. Normalization
• Most databases suggest normalization
– Keep information about each thing together
– Customer, Sales, Returns, Inventory tables
• Has lots of good properties, but…
– Is typically slow to query
• Often best to denormalize during load
– Write once, read many times
– Additionally provides snapshots in time.
42. Choice of Format
• Serde
– How each record is encoded?
• Input/Output (aka File) Format
– How are the files stored?
• Primary Choices
– Text
– Sequence File
– RCFile
– ORC
43. Text Format
• Critical to pick a Serde
– Default - ^A’s between fields
– JSON – top level JSON record
– CSV – commas between fields (on github)
• Slow to read and write
• Can’t split compressed files
– Leads to huge maps
• Need to read/decompress all fields
44. Sequence File
• Traditional Map Reduce binary file format
– Stores keys and values as classes
– Not a good fit for Hive, which has SQL types
– Hive always stores entire row as value
• Splittable but only by searching file
– Default block size is 1 MB
• Need to read and decompress all fields
45. RC (Row Columnar) File
• Columns stored separately
– Read and decompress only needed ones
– Better compression
• Columns stored as binary blobs
– Depends on meta store to supply types
• Larger blocks
– 4 MB by default
– Still search file for split boundary
46. ORC (Optimized Row Columnar)
• Columns stored separately
• Knows types
– Uses type-specific encoders
– Stores statistics (min, max, sum, count)
• Has light-weight index
– Skip over blocks of rows that don’t matter
• Larger blocks – 256 MB by default
– Has an index for block boundaries
47. Compression
• Need to pick level of compression
– None
– LZO or Snappy – fast but sloppy
– Best for temporary tables
– ZLIB – slow and complete
– Best for long term storage
48. Default Assumption
• Hive assumes users are either:
– Noobies
– Hive developers
• Default behavior is always finish
– Little Engine that Could!
• Experts could override default behaviors
– Get better performance, but riskier
• We’re working on improving heuristics
49. Shuffle Join
• Default choice
– Always works (I’ve sorted a petabyte!)
– Worst case scenario
• Each process
– Reads from part of one of the tables
– Buckets and sorts on join key
– Sends one bucket to each reduce
• Works everytime!
50. Map Join
• One table is small (eg. dimension table)
– Fits in memory
• Each process
– Reads small table into memory hash table
– Streams through part of the big file
– Joining each record from hash table
• Very fast, but limited
51. Sort Merge Bucket (SMB) Join
• If both tables are:
– Sorted the same
– Bucketed the same
– And joining on the sort/bucket column
• Each process:
– Reads a bucket from each table
– Process the row with the lowest value
• Very efficient if applicable
52. Performance Question
• Which of the following is faster?
– select count(distinct(Col)) from Tbl
– select count(*) from (select distict(Col) from Tbl)
53.
54. Answer
• Surprisingly the second is usually faster
In the first case:
– Maps send each value to the reduce
– Single reduce counts them all
In the second case:
– Maps split up the values to many reduces
– Each reduce generates its list
– Final job counts the size of each list
– Singleton reduces are almost always BAD
55. Communication is Good!
• Hive doesn’t tell you what is wrong.
– Expects you to know!
– “Lucy, you have some ‘splaining to do!”
• Explain tool provides query plan
– Filters on input
– Numbers of jobs
– Numbers of maps and reduces
– What the jobs are sorting by
– What directories are they reading or writing
56. The explanation tool is confusing.
– It takes practice to understand.
– It doesn’t include some critical details like
partition pruning.
• Running the query makes things clearer!
– Pay attention to the details
– Look at JobConf and job history files
57. Skew
• Skew is typical in real datasets.
• A user complained that his job was slow
– He had 100 reduces
– 98 of them finished fast
– 2 ran really slow
• The key was a boolean…
58.
59. • SerDeSerDe is short for
serialization/deserialization.
• It controls the format of a row.
• Serialized format:
– Delimited format (tab, comma, ctrl-a …)
– Thrift Protocols
– ProtocolBuffer*
• Deserialized (in-memory) format:
– Java Integer/String/ArrayList/HashMap
– Hadoop Writable classes
– User-defined Java Classes (Thrift, ProtocolBuffer*)