This document defines and describes big data and Hadoop. It states that big data is large datasets that cannot be processed using traditional techniques due to their volume, velocity and variety. It then describes the different types of data (structured, semi-structured, unstructured), challenges of big data, and Hadoop's use of MapReduce as a solution. It provides details on the Hadoop architecture including HDFS for storage and YARN for resource management. Common applications and users of Hadoop are also listed.
One of the challenges in storing and processing the data and using the latest internet technologies has resulted in large volumes of data. The technique to manage this massive amount of data and to pull out the value, out of this volume is collectively called Big data. Over the recent years, there has been a rising interest in big data for social media analysis. Online social media have become the important platform across the world to share information. Facebook, one of the largest social media site receives posts in millions every day. One of the efficient technologies that deal with the Big Data is Hadoop. Hadoop, for processing large data volume jobs uses MapReduce programming model. This paper provides a survey on Hadoop and its role in facebook and a brief introduction to HIVE.
We have entered an era of Big Data. Huge information is for the most part accumulation of information sets so extensive and complex that it is exceptionally hard to handle them utilizing close by database administration devices. The principle challenges with Big databases incorporate creation, curation, stockpiling, sharing, inquiry, examination and perception. So to deal with these databases we require, "exceedingly parallel software's". As a matter of first importance, information is procured from diverse sources, for example, online networking, customary undertaking information or sensor information and so forth. Flume can be utilized to secure information from online networking, for example, twitter. At that point, this information can be composed utilizing conveyed document frameworks, for example, Hadoop File System. These record frameworks are extremely proficient when number of peruses are high when contrasted with composes.
Introduction to Big Data and Hadoop using Local Standalone Modeinventionjournals
Big Data is a term defined for data sets that are extreme and complex where traditional data processing applications are inadequate to deal with them. The term Big Data often refers simply to the use of predictive investigation on analytic methods that extract value from data. Big data is generalized as a large data which is a collection of big datasets that cannot be processed using traditional computing techniques. Big data is not purely a data, rather than it is a complete subject involves various tools, techniques and frameworks. Big data can be any structured collection which results incapability of conventional data management methods. Hadoop is a distributed example used to change the large amount of data. This manipulation contains not only storage as well as processing on the data. Hadoop is an open- source software framework for dispersed storage and processing of big data sets on computer clusters built from commodity hardware. HDFS was built to support high throughput, streaming reads and writes of extremely large files. Hadoop Map Reduce is a software framework for easily writing applications which process vast amounts of data. Wordcount example reads text files and counts how often words occur. The input is text files and the result is wordcount file, each line of which contains a word and the count of how often it occurred separated by a tab.
Harnessing Hadoop: Understanding the Big Data Processing Options for Optimizi...Cognizant
A guide to using Apache Hadoop as your open source big data platform of choice, including the vendors that make various Hadoop flavors, related open source tools, Hadoop capabilities and suitable applications.
AN OVERVIEW OF BIGDATA AND HADOOP . THE ARCHITECHTURE IT USES AND THE WAY IT WORKS ON THE DATA SETS. THE SIDES ALSO SHOW THE VARIOUS FIELDS WHERE THEY ARE MOSTLY USED AND IMPLIMENTED
One of the challenges in storing and processing the data and using the latest internet technologies has resulted in large volumes of data. The technique to manage this massive amount of data and to pull out the value, out of this volume is collectively called Big data. Over the recent years, there has been a rising interest in big data for social media analysis. Online social media have become the important platform across the world to share information. Facebook, one of the largest social media site receives posts in millions every day. One of the efficient technologies that deal with the Big Data is Hadoop. Hadoop, for processing large data volume jobs uses MapReduce programming model. This paper provides a survey on Hadoop and its role in facebook and a brief introduction to HIVE.
We have entered an era of Big Data. Huge information is for the most part accumulation of information sets so extensive and complex that it is exceptionally hard to handle them utilizing close by database administration devices. The principle challenges with Big databases incorporate creation, curation, stockpiling, sharing, inquiry, examination and perception. So to deal with these databases we require, "exceedingly parallel software's". As a matter of first importance, information is procured from diverse sources, for example, online networking, customary undertaking information or sensor information and so forth. Flume can be utilized to secure information from online networking, for example, twitter. At that point, this information can be composed utilizing conveyed document frameworks, for example, Hadoop File System. These record frameworks are extremely proficient when number of peruses are high when contrasted with composes.
Introduction to Big Data and Hadoop using Local Standalone Modeinventionjournals
Big Data is a term defined for data sets that are extreme and complex where traditional data processing applications are inadequate to deal with them. The term Big Data often refers simply to the use of predictive investigation on analytic methods that extract value from data. Big data is generalized as a large data which is a collection of big datasets that cannot be processed using traditional computing techniques. Big data is not purely a data, rather than it is a complete subject involves various tools, techniques and frameworks. Big data can be any structured collection which results incapability of conventional data management methods. Hadoop is a distributed example used to change the large amount of data. This manipulation contains not only storage as well as processing on the data. Hadoop is an open- source software framework for dispersed storage and processing of big data sets on computer clusters built from commodity hardware. HDFS was built to support high throughput, streaming reads and writes of extremely large files. Hadoop Map Reduce is a software framework for easily writing applications which process vast amounts of data. Wordcount example reads text files and counts how often words occur. The input is text files and the result is wordcount file, each line of which contains a word and the count of how often it occurred separated by a tab.
Harnessing Hadoop: Understanding the Big Data Processing Options for Optimizi...Cognizant
A guide to using Apache Hadoop as your open source big data platform of choice, including the vendors that make various Hadoop flavors, related open source tools, Hadoop capabilities and suitable applications.
AN OVERVIEW OF BIGDATA AND HADOOP . THE ARCHITECHTURE IT USES AND THE WAY IT WORKS ON THE DATA SETS. THE SIDES ALSO SHOW THE VARIOUS FIELDS WHERE THEY ARE MOSTLY USED AND IMPLIMENTED
Asserting that Big Data is vital to business is an understatement. Organizations have generated more and more data for years, but struggle to use it effectively. Clearly Big Data has more important uses than ensuring compliance with regulatory requirements. In addition, data is being generated with greater velocity, due to the advent of new pervasive devices (e.g., smartphones, tablets, etc.), social Web sites (e.g., Facebook, Twitter, LinkedIn, etc.) and other sources like GPS, Google Maps, heat/pressure sensors, etc.
View the Big Data Technology Stack in a nutshell. This Big Data Technology Stack deck covers the different layers of the Big Data world and summarizes the major technologies in vogue today.
A short overview of Bigdata along with its popularity, ups and downs from past to present. We had a look of its needs, challenges and risks too. Architectures involved in it. Vendors associated with it.
Big data is a popular term used to describe the large volume of data which includes structured, semi-structured and unstructured
data. Now-a-days, unstructured data is growing in an explosive speed with the development of Internet and social networks like Twitter,Facebook
& Yahoo etc., In order to process such colossal of data a software is required that does this efficiently and this is where Hadoop steps in. Hadoop
has become one of the most used frameworks when dealing with big data. It is used to analyze and process big data. In this paper, Apache Flume
is configured and integrated with spark streaming for streaming the data from twitter application. The streamed data is stored into Apache
Cassandra. After retrieving the data, the data is going to be analyzed by using the concept of Apache Zeppelin. The result will be displayed on
Dashboard and the dashboard result is also going to be analyzed and validating using JSON
Asserting that Big Data is vital to business is an understatement. Organizations have generated more and more data for years, but struggle to use it effectively. Clearly Big Data has more important uses than ensuring compliance with regulatory requirements. In addition, data is being generated with greater velocity, due to the advent of new pervasive devices (e.g., smartphones, tablets, etc.), social Web sites (e.g., Facebook, Twitter, LinkedIn, etc.) and other sources like GPS, Google Maps, heat/pressure sensors, etc.
View the Big Data Technology Stack in a nutshell. This Big Data Technology Stack deck covers the different layers of the Big Data world and summarizes the major technologies in vogue today.
A short overview of Bigdata along with its popularity, ups and downs from past to present. We had a look of its needs, challenges and risks too. Architectures involved in it. Vendors associated with it.
Big data is a popular term used to describe the large volume of data which includes structured, semi-structured and unstructured
data. Now-a-days, unstructured data is growing in an explosive speed with the development of Internet and social networks like Twitter,Facebook
& Yahoo etc., In order to process such colossal of data a software is required that does this efficiently and this is where Hadoop steps in. Hadoop
has become one of the most used frameworks when dealing with big data. It is used to analyze and process big data. In this paper, Apache Flume
is configured and integrated with spark streaming for streaming the data from twitter application. The streamed data is stored into Apache
Cassandra. After retrieving the data, the data is going to be analyzed by using the concept of Apache Zeppelin. The result will be displayed on
Dashboard and the dashboard result is also going to be analyzed and validating using JSON
Part 1 of a series on using Social Media Networking for Businesses. This introduction explores why you should use Social Media, what it is, the highlights for businesses and how to get started.
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Levering op bestelling en zolang de voorraad strekt.
Záznam webináře: https://www.youtube.com/watch?v=Fh-cOjgpT3Q
U nás je otevřené bankovní API novinkou. Ale jak je to ve světě? Kde už otevřená bankovní API dávno fungují a jak vypadají? Dozvíte se v dalším bleskovém webináři...
Global Landscape Study on P2G Payments: Summary of in-country consumer resear...CGAP
For this study on P2G (Person-to-government) payments, Rwanda was selected as a focus country given the potential reach and varied nature of two key initiatives: the IREMBO e-government platform and the Tap&Go smartcard for public bus transport. Digital payments for school fees and utility payments were also studied. Tap&Go is privately managed but offers P2G learnings for other countries where public transport is government-run.
The research sought to answer questions across three key areas:
1. How well did digital P2G payment solutions reach and address the needs of the financially excluded?
2. What were effective and sustainable business models between actors, and how were they set up?
3. How do current and planned solutions support and work with the evolving digital payments ecosystem in Rwanda?
The data management industry has matured over the last three decades, primarily based on relational database management system(RDBMS) technology. Since the amount of data collected, and analyzed in enterprises has increased several folds in volume, variety and velocityof generation and consumption, organisations have started struggling with architectural limitations of traditional RDBMS architecture. As a result a new class of systems had to be designed and implemented, giving rise to the new phenomenon of “Big Data”. In this paper we will trace the origin of new class of system called Hadoop to handle Big data.
This presentation provides a comprehensive introduction to the Hadoop Distributed System, a powerful and widely used framework for distributed storage and processing of large-scale data. Hadoop has revolutionized the way organizations manage and analyze data, making it a crucial tool in the field of big data and data analytics.
In this presentation, we explore the key components and features of Hadoop, shedding light on the fundamental building blocks that enable its exceptional data processing capabilities. We cover essential topics, including the Hadoop Distributed File System (HDFS), MapReduce, YARN (Yet Another Resource Negotiator), and Hadoop Ecosystem components like Hive, Pig, and Spark.
Enroll Free Live demo of Hadoop online training and big data analytics courses online and become certified data analyst/ Hadoop developer. Get online Hadoop training & certification.
ارائه در زمینه کلان داده،
کارگاه آموزشی "عصر کلان داده، چرا و چگونه؟" در بیست و دومین کنفرانس انجمن کامپیوتر ایران csicc2017.ir
وحید امیری
vahidamiry.ir
datastack.ir
Techniques to optimize the pagerank algorithm usually fall in two categories. One is to try reducing the work per iteration, and the other is to try reducing the number of iterations. These goals are often at odds with one another. Skipping computation on vertices which have already converged has the potential to save iteration time. Skipping in-identical vertices, with the same in-links, helps reduce duplicate computations and thus could help reduce iteration time. Road networks often have chains which can be short-circuited before pagerank computation to improve performance. Final ranks of chain nodes can be easily calculated. This could reduce both the iteration time, and the number of iterations. If a graph has no dangling nodes, pagerank of each strongly connected component can be computed in topological order. This could help reduce the iteration time, no. of iterations, and also enable multi-iteration concurrency in pagerank computation. The combination of all of the above methods is the STICD algorithm. [sticd] For dynamic graphs, unchanged components whose ranks are unaffected can be skipped altogether.
As Europe's leading economic powerhouse and the fourth-largest hashtag#economy globally, Germany stands at the forefront of innovation and industrial might. Renowned for its precision engineering and high-tech sectors, Germany's economic structure is heavily supported by a robust service industry, accounting for approximately 68% of its GDP. This economic clout and strategic geopolitical stance position Germany as a focal point in the global cyber threat landscape.
In the face of escalating global tensions, particularly those emanating from geopolitical disputes with nations like hashtag#Russia and hashtag#China, hashtag#Germany has witnessed a significant uptick in targeted cyber operations. Our analysis indicates a marked increase in hashtag#cyberattack sophistication aimed at critical infrastructure and key industrial sectors. These attacks range from ransomware campaigns to hashtag#AdvancedPersistentThreats (hashtag#APTs), threatening national security and business integrity.
🔑 Key findings include:
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Our comprehensive report delves into these challenges, using a blend of open-source and proprietary data collection techniques. By monitoring activity on critical networks and analyzing attack patterns, our team provides a detailed overview of the threats facing German entities.
This report aims to equip stakeholders across public and private sectors with the knowledge to enhance their defensive strategies, reduce exposure to cyber risks, and reinforce Germany's resilience against cyber threats.
StarCompliance is a leading firm specializing in the recovery of stolen cryptocurrency. Our comprehensive services are designed to assist individuals and organizations in navigating the complex process of fraud reporting, investigation, and fund recovery. We combine cutting-edge technology with expert legal support to provide a robust solution for victims of crypto theft.
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2. What is Big Data?
Big Data is a collection of large datasets that
cannot be processed using traditional
computing techniques.
Big Data includes huge volume, high velocity,
and extensible variety of data.
3. Classification of Big
Data
The data in it will be of three types:
Structured data: Relational data.
Semi Structured data: XML data.
Unstructured data: Word, PDF, Text, Media
Logs.
4. Big Data Challenges
The major challenges associated with big data:
Capturing data
Storage
Searching
Sharing
Transfer
Analysis
Presentation
5. 's Solution
MapReduce
It is a parallel programming model for writing
distributed applications.
It can efficiently process multi-terabyte data-
sets.
Runs on large clusters of commodity
hardware in a reliable, fault-tolerant manner.
6.
7. Introduction to Hadoop
Hadoop was developed by Doug Cutting.
Hadoop is an Apache open source
framework written in java.
Hadoop allows distributed storage and
processing of large datasets across clusters of
computers.
8. Hadoop Architecture
Hadoop has the two major layers namely:
Processing/Computation layer (MapReduce)
Storage layer (Hadoop Distributed File
System)
Other modules of Hadoop Framework includes:
Hadoop Common
Hadoop YARN(Yet Another Resource
Negotiator)
9. What is MapReduce?
The MapReduce algorithm contains two
important tasks, namely Map and Reduce.
Map takes a set of data and breaks
individual elements into tuples (key/value
pairs).
Reduce takes Map’s output as an input and
combines those data tuples forming a
smaller set of tuples.
10. Under the MapReduce model, the data
processing primitives are called mappers and
reducers.
11. MapReduce Algorithm
Hadoop initiates Map stage by issuing
mapping task to appropriate servers in the
cluster.
Map stage:
The input file or directory, stored in the HDFS is
passed to the mapper function line by line.
The mapper processes the data and creates
several small chunks of data(key/value pairs).
Hadoop monitors for task completion and
initiates shuffle stage.
12. Shuffle stage:
The framework groups data from all mappers
by the keys and splits them among the
appropriate servers for the reduce stage.
Reduce stage:
The Reducer processes the data coming from
the mapper, producing a new set of output,
that is stored in the HDFS.
The framework manages all the details of
data-passing and copying between the
nodes in the cluster.
13. Hadoop Distributed File
System
HDFS is based on the Google File System.
It is highly fault-tolerant and is designed to be
deployed on low-cost hardware.
It is suitable for applications having large
datasets.
These files are stored in redundant fashion to
rescue the system from possible data losses in
case of failure.
14. HDFS Architecture
Namenode:
It acts as a master server that manages the
file system namespace.
Regulates client’s access to files.
Datanode:
These nodes manage the data storage of
their system.
And performs read-write and block
operations regulated by namenode.
15. Block:
It is the minimum amount of data that HDFS
can read/ write.
The files are divided into one or more blocks.
Blocks are stored in individual data nodes.
16. Hadoop Common
It provides essential services and basic
processes such as abstraction of the
underlying operating system and its file
system.
It assumes that hardware failures are
common and should be automatically
handled by the Framework.
It also contains the necessary Java Archive
(JAR) files and scripts required to start
Hadoop.
17. Hadoop YARN
ResourceManager:
It is a clustering platform that helps to
manage and allocate resources to
applications and schedule tasks.
ApplicationMasters:
Responsible for negotiating resources with
the ResourceManager and for working
with the Node Managers to execute and
monitor the tasks.
19. How Does Hadoop
Work?
Data is initially divided into directories and
files. Files are divided into uniform sized blocks
of 128M and 64M.
These files are then distributed across various
cluster nodes for further processing
supervised by the HDFS.
Blocks are replicated for handling hardware
failure.
Checking that the code was executed
successfully.
20. Performing the sort that takes place between
the map and reduce stages.
Sending the sorted data to a certain
computer.
Writing the debugging logs for each job.
22. Prominent users of
Hadoop
The Search Webmap is a Hadoop
application that runs on a big Linux cluster.
In 2010, Facebook claimed that they had the
largest Hadoop cluster in the world.
The New York Times used 100
instances and a Hadoop application to
process 4 TB data into 11 million PDFs in a day
at a computation cost of about $240.
23. Advantages of Hadoop
Hadoop is open source and compatible on
all the platforms since it is Java based.
Hadoop does not rely on hardware to
provide fault-tolerance and high availability.
Servers can be added or removed from the
cluster dynamically without interruption.
Hadoop efficiently utilizes the underlying
parallelism of the CPU cores in distributed
systems .