Apache flink
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Apache Flink is an open source platform for distributed stream and batch data processing. It provides two APIs - a DataStream API for real-time streaming and a DataSet API for batch processing. The document introduces Flink's core concepts like sources, sinks, transformations, and windows. It also provides instructions on setting up a Flink project and describes some use cases like processing Twitter feeds. Additional resources like tutorials, documentation and mailing lists are referenced to help users get started with Flink.
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Apache Flink and what it is used for
Aljoscha Krettek is the PMC chair of Apache Flink and Apache Beam, and co-founder of data Artisans. Apache Flink is an open-source platform for distributed stream and batch data processing. It allows for stateful computations over data streams in real-time and historically. Flink supports batch and stream processing using APIs like DataSet and DataStream. Data Artisans originated Flink and provides an application platform powered by Flink and Kubernetes for building stateful stream processing applications.
Apache Spark Architecture
This is the presentation I made on JavaDay Kiev 2015 regarding the architecture of Apache Spark. It covers the memory model, the shuffle implementations, data frames and some other high-level staff and can be used as an introduction to Apache Spark
Designing ETL Pipelines with Structured Streaming and Delta Lake—How to Archi...
Structured Streaming has proven to be the best platform for building distributed stream processing applications. Its unified SQL/Dataset/DataFrame APIs and Spark’s built-in functions make it easy for developers to express complex computations. Delta Lake, on the other hand, is the best way to store structured data because it is a open-source storage layer that brings ACID transactions to Apache Spark and big data workloads Together, these can make it very easy to build pipelines in many common scenarios. However, expressing the business logic is only part of the larger problem of building end-to-end streaming pipelines that interact with a complex ecosystem of storage systems and workloads. It is important for the developer to truly understand the business problem that needs to be solved. Apache Spark, being a unified analytics engine doing both batch and stream processing, often provides multiples ways to solve the same problem. So understanding the requirements carefully helps you to architect your pipeline that solves your business needs in the most resource efficient manner.
In this talk, I am going examine a number common streaming design patterns in the context of the following questions.
WHAT are you trying to consume? What are you trying to produce? What is the final output that the business wants? What are your throughput and latency requirements?
WHY do you really have those requirements? Would solving the requirements of the individual pipeline actually solve your end-to-end business requirements?
HOW are going to architect the solution? And how much are you willing to pay for it?
Clarity in understanding the ‘what and why’ of any problem can automatically much clarity on the ‘how’ to architect it using Structured Streaming and, in many cases, Delta Lake.
Apache Spark Overview
This document provides an overview of a talk on Apache Spark. It introduces the speaker and their background. It acknowledges inspiration from a previous Spark training. It then outlines the structure of the talk, which will include: a brief history of big data; a tour of Spark including its advantages over MapReduce; and explanations of Spark concepts like RDDs, transformations, and actions. The document serves to introduce the topics that will be covered in the talk.
Introduction to Apache Flink
This document provides an introduction to Apache Flink. It begins with an overview of the presenters and structure of the presentation. It then discusses Flink's APIs, architecture, and execution model. Key concepts are explained like streaming vs batch processing, scaling, the job manager and task managers. It provides a demo of Flink's DataSet API for batch processing and explains a WordCount example program. The goal is to get attendees started with Apache Flink.
Introduction to Apache Flink - Fast and reliable big data processing
This presentation introduces Apache Flink, a massively parallel data processing engine which currently undergoes the incubation process at the Apache Software Foundation. Flink's programming primitives are presented and it is shown how easily a distributed PageRank algorithm can be implemented with Flink. Intriguing features such as dedicated memory management, Hadoop compatibility, streaming and automatic optimisation make it an unique system in the world of Big Data processing.
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This document provides an overview of Apache Flink internals. It begins with an introduction and recap of Flink programming concepts. It then discusses how Flink programs are compiled into execution plans and executed in a pipelined fashion, as opposed to being executed eagerly like regular code. The document outlines Flink's architecture including the optimizer, runtime environment, and data storage integrations. It also covers iterative processing and how Flink handles iterations both by unrolling loops and with native iterative datasets.
Simplifying Big Data Analytics with Apache Spark
Apache Spark is a fast and general-purpose cluster computing system for large-scale data processing. It improves on MapReduce by allowing data to be kept in memory across jobs, enabling faster iterative jobs. Spark consists of a core engine along with libraries for SQL, streaming, machine learning, and graph processing. The document discusses new APIs in Spark including DataFrames, which provide a tabular interface like in R/Python, and data sources, which allow plugging external data systems into Spark. These changes aim to make Spark easier for data scientists to use at scale.
Recommended
Apache Flink and what it is used for
Aljoscha Krettek is the PMC chair of Apache Flink and Apache Beam, and co-founder of data Artisans. Apache Flink is an open-source platform for distributed stream and batch data processing. It allows for stateful computations over data streams in real-time and historically. Flink supports batch and stream processing using APIs like DataSet and DataStream. Data Artisans originated Flink and provides an application platform powered by Flink and Kubernetes for building stateful stream processing applications.
Apache Spark Architecture
This is the presentation I made on JavaDay Kiev 2015 regarding the architecture of Apache Spark. It covers the memory model, the shuffle implementations, data frames and some other high-level staff and can be used as an introduction to Apache Spark
Designing ETL Pipelines with Structured Streaming and Delta Lake—How to Archi...
Structured Streaming has proven to be the best platform for building distributed stream processing applications. Its unified SQL/Dataset/DataFrame APIs and Spark’s built-in functions make it easy for developers to express complex computations. Delta Lake, on the other hand, is the best way to store structured data because it is a open-source storage layer that brings ACID transactions to Apache Spark and big data workloads Together, these can make it very easy to build pipelines in many common scenarios. However, expressing the business logic is only part of the larger problem of building end-to-end streaming pipelines that interact with a complex ecosystem of storage systems and workloads. It is important for the developer to truly understand the business problem that needs to be solved. Apache Spark, being a unified analytics engine doing both batch and stream processing, often provides multiples ways to solve the same problem. So understanding the requirements carefully helps you to architect your pipeline that solves your business needs in the most resource efficient manner.
In this talk, I am going examine a number common streaming design patterns in the context of the following questions.
WHAT are you trying to consume? What are you trying to produce? What is the final output that the business wants? What are your throughput and latency requirements?
WHY do you really have those requirements? Would solving the requirements of the individual pipeline actually solve your end-to-end business requirements?
HOW are going to architect the solution? And how much are you willing to pay for it?
Clarity in understanding the ‘what and why’ of any problem can automatically much clarity on the ‘how’ to architect it using Structured Streaming and, in many cases, Delta Lake.
Apache Spark Overview
This document provides an overview of a talk on Apache Spark. It introduces the speaker and their background. It acknowledges inspiration from a previous Spark training. It then outlines the structure of the talk, which will include: a brief history of big data; a tour of Spark including its advantages over MapReduce; and explanations of Spark concepts like RDDs, transformations, and actions. The document serves to introduce the topics that will be covered in the talk.
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This document provides an introduction to Apache Flink. It begins with an overview of the presenters and structure of the presentation. It then discusses Flink's APIs, architecture, and execution model. Key concepts are explained like streaming vs batch processing, scaling, the job manager and task managers. It provides a demo of Flink's DataSet API for batch processing and explains a WordCount example program. The goal is to get attendees started with Apache Flink.
Introduction to Apache Flink - Fast and reliable big data processing
This presentation introduces Apache Flink, a massively parallel data processing engine which currently undergoes the incubation process at the Apache Software Foundation. Flink's programming primitives are presented and it is shown how easily a distributed PageRank algorithm can be implemented with Flink. Intriguing features such as dedicated memory management, Hadoop compatibility, streaming and automatic optimisation make it an unique system in the world of Big Data processing.
Apache Flink internals
This document provides an overview of Apache Flink internals. It begins with an introduction and recap of Flink programming concepts. It then discusses how Flink programs are compiled into execution plans and executed in a pipelined fashion, as opposed to being executed eagerly like regular code. The document outlines Flink's architecture including the optimizer, runtime environment, and data storage integrations. It also covers iterative processing and how Flink handles iterations both by unrolling loops and with native iterative datasets.
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Apache Spark is a fast and general-purpose cluster computing system for large-scale data processing. It improves on MapReduce by allowing data to be kept in memory across jobs, enabling faster iterative jobs. Spark consists of a core engine along with libraries for SQL, streaming, machine learning, and graph processing. The document discusses new APIs in Spark including DataFrames, which provide a tabular interface like in R/Python, and data sources, which allow plugging external data systems into Spark. These changes aim to make Spark easier for data scientists to use at scale.
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This document provides an overview and introduction to Apache Flink, a stream-based big data processing engine. It discusses the evolution of big data frameworks to platforms and the shortcomings of Spark's RDD abstraction for streaming workloads. The document then introduces Flink, covering its history, key differences from Spark like its use of streaming as the core abstraction, and examples of using Flink for batch and stream processing.
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This presentation about Apache Spark covers all the basics that a beginner needs to know to get started with Spark. It covers the history of Apache Spark, what is Spark, the difference between Hadoop and Spark. You will learn the different components in Spark, and how Spark works with the help of architecture. You will understand the different cluster managers on which Spark can run. Finally, you will see the various applications of Spark and a use case on Conviva. Now, let's get started with what is Apache Spark.
Below topics are explained in this Spark presentation:
1. History of Spark
2. What is Spark
3. Hadoop vs Spark
4. Components of Apache Spark
5. Spark architecture
6. Applications of Spark
7. Spark usecase
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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?
Simplilearn’s Apache Spark and Scala certification training are designed to:
1. Advance your expertise in the Big Data Hadoop Ecosystem
2. Help you master essential Apache and Spark skills, such as Spark Streaming, Spark SQL, machine learning programming, GraphX programming and Shell Scripting Spark
3. Help you land a Hadoop developer job requiring Apache Spark expertise by giving you a real-life industry project coupled with 30 demos
What skills will you learn?
By completing this Apache Spark and Scala course you will be able to:
1. Understand the limitations of MapReduce and the role of Spark in overcoming these limitations
2. Understand the fundamentals of the Scala programming language and its features
3. Explain and master the process of installing Spark as a standalone cluster
4. Develop expertise in using Resilient Distributed Datasets (RDD) for creating applications in Spark
5. Master Structured Query Language (SQL) using SparkSQL
6. Gain a thorough understanding of Spark streaming features
7. Master and describe the features of Spark ML programming and GraphX programming
Who should take this Scala course?
1. Professionals aspiring for a career in the field of real-time big data analytics
2. Analytics professionals
3. Research professionals
4. IT developers and testers
5. Data scientists
6. BI and reporting professionals
7. Students who wish to gain a thorough understanding of Apache Spark
Learn more at https://www.simplilearn.com/big-data-and-analytics/apache-spark-scala-certification-training
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Delta Lake is an open source storage layer that sits on top of data lakes and brings ACID transactions and reliability to Apache Spark. It addresses challenges with data lakes like lack of schema enforcement and transactions. Delta Lake provides features like ACID transactions, scalable metadata handling, schema enforcement and evolution, time travel/data versioning, and unified batch and streaming processing. Delta Lake stores data in Apache Parquet format and uses a transaction log to track changes and ensure consistency even for large datasets. It allows for updates, deletes, and merges while enforcing schemas during writes.
Improving SparkSQL Performance by 30%: How We Optimize Parquet Pushdown and P...
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Flink vs. Spark: this is the slide deck of my talk at the 2015 Flink Forward conference in Berlin, Germany, on October 12, 2015. In this talk, we tried to compare Apache Flink vs. Apache Spark with focus on real-time stream processing. Your feedback and comments are much appreciated.
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Change Data Capture CDC is a typical use case in Real-Time Data Warehousing. It tracks the data change log -binlog- of a relational database [OLTP], and replay these change log timely to an external storage to do Real-Time OLAP, such as delta/kudu. To implement a robust CDC streaming pipeline, lots of factors should be concerned, such as how to ensure data accuracy , how to process OLTP source schema changed, whether it is easy to build for variety databases with less code.
Apache Flink 101 - the rise of stream processing and beyond
This document provides an overview and summary of Apache Flink. It discusses how Flink enables stateful stream processing and beyond. Key points include that Flink allows for stateful computations over event streams in an expressive, scalable, fault-tolerant way through layered APIs. It also supports batch processing, machine learning, and serving as a stream processor that unifies streaming and batch. The document highlights many use cases of Flink at Alibaba and how it powers critical systems like real-time analytics and recommendations.
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The Parquet format is one of the most widely used columnar storage formats in the Spark ecosystem. Given that I/O is expensive and that the storage layer is the entry point for any query execution, understanding the intricacies of your storage format is important for optimizing your workloads.
As an introduction, we will provide context around the format, covering the basics of structured data formats and the underlying physical data storage model alternatives (row-wise, columnar and hybrid). Given this context, we will dive deeper into specifics of the Parquet format: representation on disk, physical data organization (row-groups, column-chunks and pages) and encoding schemes. Now equipped with sufficient background knowledge, we will discuss several performance optimization opportunities with respect to the format: dictionary encoding, page compression, predicate pushdown (min/max skipping), dictionary filtering and partitioning schemes. We will learn how to combat the evil that is ‘many small files’, and will discuss the open-source Delta Lake format in relation to this and Parquet in general.
This talk serves both as an approachable refresher on columnar storage as well as a guide on how to leverage the Parquet format for speeding up analytical workloads in Spark using tangible tips and tricks.
Introduction to Apache Spark
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.
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Introduction to apache spark
we will see an overview of Spark in Big Data. We will start with an introduction to Apache Spark Programming. Then we will move to know the Spark History. Moreover, we will learn why Spark is needed. Afterward, will cover all fundamental of Spark components. Furthermore, we will learn about Spark’s core abstraction and Spark RDD. For more detailed insights, we will also cover spark features, Spark limitations, and Spark Use cases.
Making Apache Spark Better with Delta Lake
Delta Lake is an open-source storage layer that brings reliability to data lakes. Delta Lake offers ACID transactions, scalable metadata handling, and unifies the streaming and batch data processing. It runs on top of your existing data lake and is fully compatible with Apache Spark APIs.
In this talk, we will cover:
* What data quality problems Delta helps address
* How to convert your existing application to Delta Lake
* How the Delta Lake transaction protocol works internally
* The Delta Lake roadmap for the next few releases
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Spark SQL enables Spark to perform efficient and fault-tolerant relational query processing with analytics database technologies. The relational queries are compiled to the executable physical plans consisting of transformations and actions on RDDs with the generated Java code. The code is compiled to Java bytecode, executed at runtime by JVM and optimized by JIT to native machine code at runtime. This talk will take a deep dive into Spark SQL execution engine. The talk includes pipelined execution, whole-stage code generation, UDF execution, memory management, vectorized readers, lineage based RDD transformation and action.
Learn Apache Spark: A Comprehensive Guide
Want to learn Apache Spark and become big data expert in 2018? This guide will help you learn everything you need to know about Apache Spark!
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This presentation about Apache Spark covers all the basics that a beginner needs to know to get started with Spark. It covers the history of Apache Spark, what is Spark, the difference between Hadoop and Spark. You will learn the different components in Spark, and how Spark works with the help of architecture. You will understand the different cluster managers on which Spark can run. Finally, you will see the various applications of Spark and a use case on Conviva. Now, let's get started with what is Apache Spark.
Below topics are explained in this Spark presentation:
1. History of Spark
2. What is Spark
3. Hadoop vs Spark
4. Components of Apache Spark
5. Spark architecture
6. Applications of Spark
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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?
Simplilearn’s Apache Spark and Scala certification training are designed to:
1. Advance your expertise in the Big Data Hadoop Ecosystem
2. Help you master essential Apache and Spark skills, such as Spark Streaming, Spark SQL, machine learning programming, GraphX programming and Shell Scripting Spark
3. Help you land a Hadoop developer job requiring Apache Spark expertise by giving you a real-life industry project coupled with 30 demos
What skills will you learn?
By completing this Apache Spark and Scala course you will be able to:
1. Understand the limitations of MapReduce and the role of Spark in overcoming these limitations
2. Understand the fundamentals of the Scala programming language and its features
3. Explain and master the process of installing Spark as a standalone cluster
4. Develop expertise in using Resilient Distributed Datasets (RDD) for creating applications in Spark
5. Master Structured Query Language (SQL) using SparkSQL
6. Gain a thorough understanding of Spark streaming features
7. Master and describe the features of Spark ML programming and GraphX programming
Who should take this Scala course?
1. Professionals aspiring for a career in the field of real-time big data analytics
2. Analytics professionals
3. Research professionals
4. IT developers and testers
5. Data scientists
6. BI and reporting professionals
7. Students who wish to gain a thorough understanding of Apache Spark
Learn more at https://www.simplilearn.com/big-data-and-analytics/apache-spark-scala-certification-training
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Parquet performance tuning focuses on optimizing Parquet reads by leveraging columnar organization, encoding, and filtering techniques. Statistics and dictionary filtering can eliminate unnecessary data reads by filtering at the row group and page levels. However, these optimizations require columns to be sorted and fully dictionary encoded within files. Increasing dictionary size thresholds and decreasing row group sizes can help avoid dictionary encoding fallback and improve filtering effectiveness. Future work may include new encodings, compression algorithms like Brotli, and page-level filtering in the Parquet format.
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Delta Lake is an open source storage layer that sits on top of data lakes and brings ACID transactions and reliability to Apache Spark. It addresses challenges with data lakes like lack of schema enforcement and transactions. Delta Lake provides features like ACID transactions, scalable metadata handling, schema enforcement and evolution, time travel/data versioning, and unified batch and streaming processing. Delta Lake stores data in Apache Parquet format and uses a transaction log to track changes and ensure consistency even for large datasets. It allows for updates, deletes, and merges while enforcing schemas during writes.
Improving SparkSQL Performance by 30%: How We Optimize Parquet Pushdown and P...
The document discusses optimizations made to Spark SQL performance when working with Parquet files at ByteDance. It describes how Spark originally reads Parquet files and identifies two main areas for optimization: Parquet filter pushdown and the Parquet reader. For filter pushdown, sorting columns improved statistics and reduced data reads by 30%. For the reader, splitting it to first filter then read other columns prevented loading unnecessary data. These changes improved Spark SQL performance at ByteDance without changing jobs.
Introduction to Spark Streaming
An introduction to Spark Streaming. Presented at Bangalore Apache Spark Meetup by Madhukara Phatak on 25/04/2015.
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Simplify CDC Pipeline with Spark Streaming SQL and Delta Lake
Change Data Capture CDC is a typical use case in Real-Time Data Warehousing. It tracks the data change log -binlog- of a relational database [OLTP], and replay these change log timely to an external storage to do Real-Time OLAP, such as delta/kudu. To implement a robust CDC streaming pipeline, lots of factors should be concerned, such as how to ensure data accuracy , how to process OLTP source schema changed, whether it is easy to build for variety databases with less code.
Apache Flink 101 - the rise of stream processing and beyond
This document provides an overview and summary of Apache Flink. It discusses how Flink enables stateful stream processing and beyond. Key points include that Flink allows for stateful computations over event streams in an expressive, scalable, fault-tolerant way through layered APIs. It also supports batch processing, machine learning, and serving as a stream processor that unifies streaming and batch. The document highlights many use cases of Flink at Alibaba and how it powers critical systems like real-time analytics and recommendations.
The Parquet Format and Performance Optimization Opportunities
The Parquet format is one of the most widely used columnar storage formats in the Spark ecosystem. Given that I/O is expensive and that the storage layer is the entry point for any query execution, understanding the intricacies of your storage format is important for optimizing your workloads.
As an introduction, we will provide context around the format, covering the basics of structured data formats and the underlying physical data storage model alternatives (row-wise, columnar and hybrid). Given this context, we will dive deeper into specifics of the Parquet format: representation on disk, physical data organization (row-groups, column-chunks and pages) and encoding schemes. Now equipped with sufficient background knowledge, we will discuss several performance optimization opportunities with respect to the format: dictionary encoding, page compression, predicate pushdown (min/max skipping), dictionary filtering and partitioning schemes. We will learn how to combat the evil that is ‘many small files’, and will discuss the open-source Delta Lake format in relation to this and Parquet in general.
This talk serves both as an approachable refresher on columnar storage as well as a guide on how to leverage the Parquet format for speeding up analytical workloads in Spark using tangible tips and tricks.
Introduction to Apache Spark
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.
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At Stripe we have created a complete end to end exactly-once processing pipeline to process financial data at scale, by combining the exactly-once power from Flink, Kafka, and Pinot together. The pipeline provides exactly-once guarantee, end-to-end latency within a minute, deduplication against hundreds of billions of keys, and sub-second query latency against the whole dataset with trillion level rows. In this session we will discuss the technical challenges of designing, optimizing, and operating the whole pipeline, including Flink, Kafka, and Pinot. We will also share our lessons learned and the benefits gained from exactly-once processing.
by
Xiang Zhang & Pratyush Sharma & Xiaoman Dong
Introduction to Spark
This document provides an introduction and overview of Apache Spark. It discusses why in-memory computing is important for speed, compares Spark and Ignite, describes what Spark is and how it works using Resilient Distributed Datasets (RDDs) and a directed acyclic graph (DAG) model. It also provides examples of Spark operations on RDDs and shows a word count example in Java, Scala and Python.
Spark
Spark and Resilient Distributed Datasets addresses the need for efficient data sharing across iterative and interactive queries in large clusters. It proposes an in-memory data processing framework called Spark, using a distributed data structure called Resilient Distributed Datasets (RDDs) that allow data to be cached in memory across jobs. RDDs act as a fault-tolerant distributed shared memory, avoiding the need to write to stable storage between jobs and enabling more efficient data sharing compared to MapReduce.
Introduction to apache spark
we will see an overview of Spark in Big Data. We will start with an introduction to Apache Spark Programming. Then we will move to know the Spark History. Moreover, we will learn why Spark is needed. Afterward, will cover all fundamental of Spark components. Furthermore, we will learn about Spark’s core abstraction and Spark RDD. For more detailed insights, we will also cover spark features, Spark limitations, and Spark Use cases.
Making Apache Spark Better with Delta Lake
Delta Lake is an open-source storage layer that brings reliability to data lakes. Delta Lake offers ACID transactions, scalable metadata handling, and unifies the streaming and batch data processing. It runs on top of your existing data lake and is fully compatible with Apache Spark APIs.
In this talk, we will cover:
* What data quality problems Delta helps address
* How to convert your existing application to Delta Lake
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* The Delta Lake roadmap for the next few releases
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Apache flink
- 1. Apache Flink Introduction By: Ahmed Nader
- 2. Agenda • What’s Apache Flink? • Deeper into Flink • Quick Start and Configuration • Get your hands dirty • Tips and some useful links • References 2
- 3. What’s Apache Flink? Open Source platform for distributed Stream and Batch Processing. Large scale data processing engine. Real Streaming engine, not cutting stream into batches. Flink has 2 APIs. DataStrea m DataSet 3
- 4. Datastream API Represents a continuous stream of data of certain type. Operations applied on each element of the stream or windows. Data Strea m Operation Data Strea m Source Sink 4
- 5. Datastream API 5 Example Live Stock Feed: Apple 235 Alert if Microsoft > 120 Apple 235 Google 516 Sum every 10 seconds Microsoft 124 Microsoft 124 Google 516 Write event to database Alert if sum > 10000
- 6. Dataset API 6 Uses Batch processing. Special case for Stream processing where finite data sources are just streams that happen to end. Offers dedicated API with machine learning and graph processing libraries. Data Set Operation Data Set Source Sink
- 7. Dataset API 7 Example Map/Reduce paradigm: Map Reduce a 1 2 …
- 9. Analyzing flink stack 9 Streaming dataflow runtime which interprets every program as a dataflow graph. Some Libraries on top of Datastream and Dataset API such as: Table: enables SQL like queries. Gelly: Graph processing to transform and traverse graphs in a distributed fashion. ML: has a couple of machine learning algorithms yet still too basic. CEP: easily detect complex events in a data stream. Which can allow to get hold of what’s really important in your data.
- 10. Deeper into Flink 10 Data Sources From an input file From a socket From a collection
- 11. Deeper into Flink 11 Data Sinks Write to a CSV File Write to a socket Print on the terminal
- 12. Deeper into Flink 12 Data Transformations(for DataStream API): Map: takes 1 element and produces 1 element. flatMap: takes 1 element and produces 0 or more elements. Filter: Evaluates a boolean value for each element and retains those returning true. KeyBy: partitions a stream into disjoint partitions each has elements of the same key. Window: groups all stream events according to some characteristic ex: data arrived in last 5 seconds. Union, Join, Split, Select…
- 13. Deeper into Flink 13 Interesting Use cases: Processing Twitter feed and one good application for that can be collecting statistics on that feed. see: http://blog.brakmic.com/stream-processing-with-apache-flink/ Identifying popular locations where people arrive by taxis, By applying filter and map functions on a datastream of taxi ride records then getting the most popular places for the last 15 minutes for example. see: https://www.mapr.com/blog/essential-guide-streaming-first- processing-apache-flink
- 14. Setup 14 Pre-requisites: Java 7.x or higher. Maven 3.0.4 or higher. Start a new flink project using Maven: Run the following script in the terminal: mvn archetype:generate -DarchetypeGroupId=org.apache.flink - DarchetypeArtifactId=flink-quickstart-java -DarchetypeVersion=1.0.1 OR Add flink to an existing project: see: https://ci.apache.org/projects/flink/flink-docs-release- 1.0/apis/common/index.html
- 15. Get your hands dirty: 15
- 16. Get your hands dirty: 16
- 17. Get your hands dirty: 17 Execution Local/debugging cluster Command Line Interface Web interface See: https://ci.apache.org/projects/flink/flink-docs-release-0.7/programming_guide.htm
- 18. Tips and some useful links: 18 Subscribe to the mailing list, by sending an empty email to user-subscribe@flink.apache.org. Clone the flink project on Github for more examples. There’s a free course by DataArtisans see: http://dataartisans.github.io/flink- training/index.html Here are some other useful links too: • http://www.slideshare.net/sbaltagi/stepbystep-introduction-to-apache-flink • https://ci.apache.org/projects/flink/flink-docs-release- 0.7/programming_guide.html • https://ci.apache.org/projects/flink/flink-docs-release- 1.0/apis/common/index.html
- 19. References 19 http://blog.brakmic.com/stream-processing-with-apache-flink/ http://www.slideshare.net/sbaltagi/stepbystep-introduction-to-apache-flink https://www.mapr.com/blog/essential-guide-streaming-first-processing- apache-flink https://ci.apache.org/projects/flink/flink-docs-release- 0.7/programming_guide.html http://dataartisans.github.io/flink-training/index.html https://ci.apache.org/projects/flink/flink-docs-release- 1.0/apis/common/index.html