This talk is an introduction into Stream Processing with Apache Flink. I gave this talk at the Madrid Apache Flink Meetup at February 25th, 2016.
The talk discusses Flink's features, shows it's DataStream API and explains the benefits of Event-time stream processing. It gives an outlook on some features that will be added after the 1.0 release.
Apache Flink Internals: Stream & Batch Processing in One System – Apache Flin...ucelebi
An in-depth look at Apache Flink’s Streaming Dataflow Engine. Flink executes data streaming programs directly as streams with low latency and flexible user-defined state and models batch programs as streaming programs on finite data streams.
The slides cover the general design of the runtime and show how the engine is able to support diverse features and workloads without compromising on performance or usability.
Flink Forward, Berlin
October 13, 2015
Making Apache Spark Better with Delta LakeDatabricks
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
* How to get involved!
Spark (Structured) Streaming vs. Kafka Streams - two stream processing platfo...Guido Schmutz
Independent of the source of data, the integration and analysis of event streams gets more important in the world of sensors, social media streams and Internet of Things. Events have to be accepted quickly and reliably, they have to be distributed and analyzed, often with many consumers or systems interested in all or part of the events. In this session we compare two popular Streaming Analytics solutions: Spark Streaming and Kafka Streams.
Spark is fast and general engine for large-scale data processing and has been designed to provide a more efficient alternative to Hadoop MapReduce. Spark Streaming brings Spark's language-integrated API to stream processing, letting you write streaming applications the same way you write batch jobs. It supports both Java and Scala.
Kafka Streams is the stream processing solution which is part of Kafka. It is provided as a Java library and by that can be easily integrated with any Java application.
Apache Flink Internals: Stream & Batch Processing in One System – Apache Flin...ucelebi
An in-depth look at Apache Flink’s Streaming Dataflow Engine. Flink executes data streaming programs directly as streams with low latency and flexible user-defined state and models batch programs as streaming programs on finite data streams.
The slides cover the general design of the runtime and show how the engine is able to support diverse features and workloads without compromising on performance or usability.
Flink Forward, Berlin
October 13, 2015
Making Apache Spark Better with Delta LakeDatabricks
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
* How to get involved!
Spark (Structured) Streaming vs. Kafka Streams - two stream processing platfo...Guido Schmutz
Independent of the source of data, the integration and analysis of event streams gets more important in the world of sensors, social media streams and Internet of Things. Events have to be accepted quickly and reliably, they have to be distributed and analyzed, often with many consumers or systems interested in all or part of the events. In this session we compare two popular Streaming Analytics solutions: Spark Streaming and Kafka Streams.
Spark is fast and general engine for large-scale data processing and has been designed to provide a more efficient alternative to Hadoop MapReduce. Spark Streaming brings Spark's language-integrated API to stream processing, letting you write streaming applications the same way you write batch jobs. It supports both Java and Scala.
Kafka Streams is the stream processing solution which is part of Kafka. It is provided as a Java library and by that can be easily integrated with any Java application.
Apache Iceberg - A Table Format for Hige Analytic DatasetsAlluxio, Inc.
Data Orchestration Summit
www.alluxio.io/data-orchestration-summit-2019
November 7, 2019
Apache Iceberg - A Table Format for Hige Analytic Datasets
Speaker:
Ryan Blue, Netflix
For more Alluxio events: https://www.alluxio.io/events/
Real-time Analytics with Upsert Using Apache Kafka and Apache Pinot | Yupeng ...HostedbyConfluent
Apache Kafka is used as the primary message bus for propagating events and logs across Uber. In particular, it pairs with Apache Pinot, a real-time distributed OLAP datastore, to deliver real-time insights seconds after the messages produced to Kafka.
One challenge we faced was to update existing data in Pinot with the changelog in Kafka, and deliver an accurate view in the real-time analytical results. For example, the financial dashboard can report gross booking with the corrected Ride fares. And restaurant owners can analyze the UberEats orders with their latest delivery status.
Implementing upserts in an immutable real-time OLAP store like Pinot is nontrivial. We need to make architectural changes in how data is distributed via Kafka amongst the server nodes, how it's indexed and queried in a distributed fashion. In this talk I will discuss how we leveraged Kafka's partition-by-key feature to this end and how we added this ability in Pinot without any performance degradation.
Apache Flink is a framework and distributed processing engine for stateful computations over unbounded and bounded data streams. Flink has been designed to run in all common cluster environments, perform computations at in-memory speed and at any scale.
The Rise Of Event Streaming – Why Apache Kafka Changes EverythingKai Wähner
Business digitalization trends like microservices, the Internet of Things or Machine Learning are driving the need to process events at a whole new scale, speed and efficiency. Traditional solutions like ETL/data integration or messaging are not build to serve these needs.
Today, the open source project Apache Kafka® is being used by thousands of companies including over 60% of the Fortune 100 to power and innovate their businesses by focusing their data strategies around event-driven architectures leveraging event streaming.We will discuss the market and technology changes that have given rise to Kafka and to Event Streaming, and we will introduce the audience to the key aspects of building an Event streaming platform with Kafka. Examples of productive use cases from the automotive, manufacturing and transportation sector will showcase the power of event streaming.
Unlocking the Power of Apache Flink: An Introduction in 4 ActsHostedbyConfluent
"Today's consumers have come to expect timely and accurate information from the companies they do business with. Whether it's being alerted that someone just used your credit card to rent a car in Prague, or checking on the balance of your mobile data plan, it's not good enough to learn about yesterday's information today. We all expect the companies managing our data to be able to provide fully up-to-the-moment reporting.
Apache Flink is a battle-hardened stream processor widely used for demanding applications like these. Its performance and robustness are the result of a handful of core design principles: a shared-nothing architecture with local state, event-time processing, and state snapshots (for recovery). During this talk, we'll bring these principles to life with real-world examples and demos."
Designing ETL Pipelines with Structured Streaming and Delta Lake—How to Archi...Databricks
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.
Arbitrary Stateful Aggregations using Structured Streaming in Apache SparkDatabricks
In this talk, we will introduce some of the new available APIs around stateful aggregation in Structured Streaming, namely flatMapGroupsWithState. We will show how this API can be used to power many complex real-time workflows, including stream-to-stream joins, through live demos using Databricks and Apache Kafka.
Apache Flink: Real-World Use Cases for Streaming AnalyticsSlim Baltagi
This face to face talk about Apache Flink in Sao Paulo, Brazil is the first event of its kind in Latin America! It explains how Apache Flink 1.0 announced on March 8th, 2016 by the Apache Software Foundation (link), marks a new era of Big Data analytics and in particular Real-Time streaming analytics. The talk maps Flink's capabilities to real-world use cases that span multiples verticals such as: Financial Services, Healthcare, Advertisement, Oil and Gas, Retail and Telecommunications.
In this talk, you learn more about:
1. What is Apache Flink Stack?
2. Batch vs. Streaming Analytics
3. Key Differentiators of Apache Flink for Streaming Analytics
4. Real-World Use Cases with Flink for Streaming Analytics
5. Who is using Flink?
6. Where do you go from here?
Simplify CDC Pipeline with Spark Streaming SQL and Delta LakeDatabricks
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.
Delta from a Data Engineer's PerspectiveDatabricks
Take a walk through the daily struggles of a data engineer in this presentation as we cover what is truly needed to create robust end to end Big Data solutions.
Analyzing Petabyte Scale Financial Data with Apache Pinot and Apache Kafka | ...HostedbyConfluent
At Stripe, we operate a general ledger modeled as double-entry bookkeeping for all financial transactions. Warehousing such data is challenging due to its high volume and high cardinality of unique accounts.
aFurthermore, it is financially critical to get up-to-date, accurate analytics over all records. Due to the changing nature of real time transactions, it is impossible to pre-compute the analytics as a fixed time series. We have overcome the challenge by creating a real time key-value store inside Pinot that can sustain half million QPS with all the financial transactions.
We will talk about the details of our solution and the interesting technical challenges faced.
Squirreling Away $640 Billion: How Stripe Leverages Flink for Change Data Cap...Flink Forward
Flink Forward San Francisco 2022.
Being in the payments space, Stripe requires strict correctness and freshness guarantees. We rely on Flink as the natural solution for delivering on this in support of our Change Data Capture (CDC) infrastructure. We heavily rely on CDC as a tool for capturing data change streams from our databases without critically impacting database reliability, scalability, and maintainability. Data derived from these streams is used broadly across the business and powers many of our critical financial reporting systems totalling over $640 Billion in payment volume annually. We use many components of Flink’s flexible DataStream API to perform aggregations and abstract away the complexities of stream processing from our downstreams. In this talk, we’ll walk through our experience from the very beginning to what we have in production today. We’ll share stories around the technical details and trade-offs we encountered along the way.
by
Jeff Chao
Building Reliable Lakehouses with Apache Flink and Delta LakeFlink Forward
Flink Forward San Francisco 2022.
Apache Flink and Delta Lake together allow you to build the foundation for your data lakehouses by ensuring the reliability of your concurrent streams from processing to the underlying cloud object-store. Together, the Flink/Delta Connector enables you to store data in Delta tables such that you harness Delta’s reliability by providing ACID transactions and scalability while maintaining Flink’s end-to-end exactly-once processing. This ensures that the data from Flink is written to Delta Tables in an idempotent manner such that even if the Flink pipeline is restarted from its checkpoint information, the pipeline will guarantee no data is lost or duplicated thus preserving the exactly-once semantics of Flink.
by
Scott Sandre & Denny Lee
Video and slides synchronized, mp3 and slide download available at URL http://bit.ly/1VhSzmy.
Robert Metzger provides an overview of the Apache Flink internals and its streaming-first philosophy, as well as the programming APIs. Filmed at qconlondon.com.
Robert Metzger is a PMC member at the Apache Flink project and a cofounder and software engineer at data Artisans. He is the author of many Flink components including the Kafka and YARN connectors.
Stream Processing is emerging as a popular paradigm for data processing architectures, because it handles the continuous nature of most data and computation and gets rid of artificial boundaries and delays. In this talk, we are going to look at some of the most common misconceptions about stream processing and debunk them.
- Myth 1: Streaming is approximate and exactly-once is not possible.
- Myth 2: Streaming is for real-time only.
- Myth 4: Streaming is harder to learn than Batch Processing.
- Myth 3: You need to choose between latency and throughput.
We will look at these and other myths and debunk them at the example of Apache Flink. We will discuss Apache Flink's approach to high performance stream processing with state, strong consistency, low latency, and sophisticated handling of time. With such building blocks, Apache Flink can handle classes of problems previously considered out of reach for stream processing. We also take a sneak preview at the next steps for Flink.
Apache Iceberg - A Table Format for Hige Analytic DatasetsAlluxio, Inc.
Data Orchestration Summit
www.alluxio.io/data-orchestration-summit-2019
November 7, 2019
Apache Iceberg - A Table Format for Hige Analytic Datasets
Speaker:
Ryan Blue, Netflix
For more Alluxio events: https://www.alluxio.io/events/
Real-time Analytics with Upsert Using Apache Kafka and Apache Pinot | Yupeng ...HostedbyConfluent
Apache Kafka is used as the primary message bus for propagating events and logs across Uber. In particular, it pairs with Apache Pinot, a real-time distributed OLAP datastore, to deliver real-time insights seconds after the messages produced to Kafka.
One challenge we faced was to update existing data in Pinot with the changelog in Kafka, and deliver an accurate view in the real-time analytical results. For example, the financial dashboard can report gross booking with the corrected Ride fares. And restaurant owners can analyze the UberEats orders with their latest delivery status.
Implementing upserts in an immutable real-time OLAP store like Pinot is nontrivial. We need to make architectural changes in how data is distributed via Kafka amongst the server nodes, how it's indexed and queried in a distributed fashion. In this talk I will discuss how we leveraged Kafka's partition-by-key feature to this end and how we added this ability in Pinot without any performance degradation.
Apache Flink is a framework and distributed processing engine for stateful computations over unbounded and bounded data streams. Flink has been designed to run in all common cluster environments, perform computations at in-memory speed and at any scale.
The Rise Of Event Streaming – Why Apache Kafka Changes EverythingKai Wähner
Business digitalization trends like microservices, the Internet of Things or Machine Learning are driving the need to process events at a whole new scale, speed and efficiency. Traditional solutions like ETL/data integration or messaging are not build to serve these needs.
Today, the open source project Apache Kafka® is being used by thousands of companies including over 60% of the Fortune 100 to power and innovate their businesses by focusing their data strategies around event-driven architectures leveraging event streaming.We will discuss the market and technology changes that have given rise to Kafka and to Event Streaming, and we will introduce the audience to the key aspects of building an Event streaming platform with Kafka. Examples of productive use cases from the automotive, manufacturing and transportation sector will showcase the power of event streaming.
Unlocking the Power of Apache Flink: An Introduction in 4 ActsHostedbyConfluent
"Today's consumers have come to expect timely and accurate information from the companies they do business with. Whether it's being alerted that someone just used your credit card to rent a car in Prague, or checking on the balance of your mobile data plan, it's not good enough to learn about yesterday's information today. We all expect the companies managing our data to be able to provide fully up-to-the-moment reporting.
Apache Flink is a battle-hardened stream processor widely used for demanding applications like these. Its performance and robustness are the result of a handful of core design principles: a shared-nothing architecture with local state, event-time processing, and state snapshots (for recovery). During this talk, we'll bring these principles to life with real-world examples and demos."
Designing ETL Pipelines with Structured Streaming and Delta Lake—How to Archi...Databricks
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.
Arbitrary Stateful Aggregations using Structured Streaming in Apache SparkDatabricks
In this talk, we will introduce some of the new available APIs around stateful aggregation in Structured Streaming, namely flatMapGroupsWithState. We will show how this API can be used to power many complex real-time workflows, including stream-to-stream joins, through live demos using Databricks and Apache Kafka.
Apache Flink: Real-World Use Cases for Streaming AnalyticsSlim Baltagi
This face to face talk about Apache Flink in Sao Paulo, Brazil is the first event of its kind in Latin America! It explains how Apache Flink 1.0 announced on March 8th, 2016 by the Apache Software Foundation (link), marks a new era of Big Data analytics and in particular Real-Time streaming analytics. The talk maps Flink's capabilities to real-world use cases that span multiples verticals such as: Financial Services, Healthcare, Advertisement, Oil and Gas, Retail and Telecommunications.
In this talk, you learn more about:
1. What is Apache Flink Stack?
2. Batch vs. Streaming Analytics
3. Key Differentiators of Apache Flink for Streaming Analytics
4. Real-World Use Cases with Flink for Streaming Analytics
5. Who is using Flink?
6. Where do you go from here?
Simplify CDC Pipeline with Spark Streaming SQL and Delta LakeDatabricks
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.
Delta from a Data Engineer's PerspectiveDatabricks
Take a walk through the daily struggles of a data engineer in this presentation as we cover what is truly needed to create robust end to end Big Data solutions.
Analyzing Petabyte Scale Financial Data with Apache Pinot and Apache Kafka | ...HostedbyConfluent
At Stripe, we operate a general ledger modeled as double-entry bookkeeping for all financial transactions. Warehousing such data is challenging due to its high volume and high cardinality of unique accounts.
aFurthermore, it is financially critical to get up-to-date, accurate analytics over all records. Due to the changing nature of real time transactions, it is impossible to pre-compute the analytics as a fixed time series. We have overcome the challenge by creating a real time key-value store inside Pinot that can sustain half million QPS with all the financial transactions.
We will talk about the details of our solution and the interesting technical challenges faced.
Squirreling Away $640 Billion: How Stripe Leverages Flink for Change Data Cap...Flink Forward
Flink Forward San Francisco 2022.
Being in the payments space, Stripe requires strict correctness and freshness guarantees. We rely on Flink as the natural solution for delivering on this in support of our Change Data Capture (CDC) infrastructure. We heavily rely on CDC as a tool for capturing data change streams from our databases without critically impacting database reliability, scalability, and maintainability. Data derived from these streams is used broadly across the business and powers many of our critical financial reporting systems totalling over $640 Billion in payment volume annually. We use many components of Flink’s flexible DataStream API to perform aggregations and abstract away the complexities of stream processing from our downstreams. In this talk, we’ll walk through our experience from the very beginning to what we have in production today. We’ll share stories around the technical details and trade-offs we encountered along the way.
by
Jeff Chao
Building Reliable Lakehouses with Apache Flink and Delta LakeFlink Forward
Flink Forward San Francisco 2022.
Apache Flink and Delta Lake together allow you to build the foundation for your data lakehouses by ensuring the reliability of your concurrent streams from processing to the underlying cloud object-store. Together, the Flink/Delta Connector enables you to store data in Delta tables such that you harness Delta’s reliability by providing ACID transactions and scalability while maintaining Flink’s end-to-end exactly-once processing. This ensures that the data from Flink is written to Delta Tables in an idempotent manner such that even if the Flink pipeline is restarted from its checkpoint information, the pipeline will guarantee no data is lost or duplicated thus preserving the exactly-once semantics of Flink.
by
Scott Sandre & Denny Lee
Video and slides synchronized, mp3 and slide download available at URL http://bit.ly/1VhSzmy.
Robert Metzger provides an overview of the Apache Flink internals and its streaming-first philosophy, as well as the programming APIs. Filmed at qconlondon.com.
Robert Metzger is a PMC member at the Apache Flink project and a cofounder and software engineer at data Artisans. He is the author of many Flink components including the Kafka and YARN connectors.
Stream Processing is emerging as a popular paradigm for data processing architectures, because it handles the continuous nature of most data and computation and gets rid of artificial boundaries and delays. In this talk, we are going to look at some of the most common misconceptions about stream processing and debunk them.
- Myth 1: Streaming is approximate and exactly-once is not possible.
- Myth 2: Streaming is for real-time only.
- Myth 4: Streaming is harder to learn than Batch Processing.
- Myth 3: You need to choose between latency and throughput.
We will look at these and other myths and debunk them at the example of Apache Flink. We will discuss Apache Flink's approach to high performance stream processing with state, strong consistency, low latency, and sophisticated handling of time. With such building blocks, Apache Flink can handle classes of problems previously considered out of reach for stream processing. We also take a sneak preview at the next steps for Flink.
Presenter: Robert Metzger
Video Link: https://www.youtube.com/watch?v=GWxyiTY-1uQ
Flink.tw Meetup Event (2016/07/19):
"Stream Processing with Apache Flink w/ Flink PMC Robert Metzger"
Uses the example of correct, high-througput, grouping and counting of streaming events as a backdrop for exploring the state-of-the art features of Apache Flink
Intro to Apache Apex - Next Gen Platform for Ingest and TransformApache Apex
Introduction to Apache Apex - The next generation native Hadoop platform. This talk will cover details about how Apache Apex can be used as a powerful and versatile platform for big data processing. Common usage of Apache Apex includes big data ingestion, streaming analytics, ETL, fast batch alerts, real-time actions, threat detection, etc.
Bio:
Pramod Immaneni is Apache Apex PMC member and senior architect at DataTorrent, where he works on Apache Apex and specializes in big data platform and applications. Prior to DataTorrent, he was a co-founder and CTO of Leaf Networks LLC, eventually acquired by Netgear Inc, where he built products in core networking space and was granted patents in peer-to-peer VPNs.
Apache Flink(tm) - A Next-Generation Stream ProcessorAljoscha Krettek
In diesem Vortrag wird es zunächst einen kurzen Überblick über den aktuellen Stand im Bereich der Streaming-Datenanalyse geben. Danach wird es mit einer kleinen Einführung in das Apache-Flink-System zur Echtzeit-Datenanalyse weitergehen, bevor wir tiefer in einige der interessanten Eigenschaften eintauchen werden, die Flink von den anderen Spielern in diesem Bereich unterscheidet. Dazu werden wir beispielhafte Anwendungsfälle betrachten, die entweder direkt von Nutzern stammen oder auf unserer Erfahrung mit Nutzern basieren. Spezielle Eigenschaften, die wir betrachten werden, sind beispielsweise die Unterstützung für die Zerlegung von Events in einzelnen Sessions basierend auf der Zeit, zu der ein Ereignis passierte (event-time), Bestimmung von Zeitpunkten zum jeweiligen Speichern des Zustands eines Streaming-Programms für spätere Neustarts, die effiziente Abwicklung bei sehr großen zustandsorientierten Streaming-Berechnungen und die Zugänglichkeit des Zustandes von außerhalb.
Hadoop Summit SJ 2016: Next Gen Big Data Analytics with Apache ApexApache Apex
This is an overview of architecture with use cases for Apache Apex, a big data analytics platform. It comes with a powerful stream processing engine, rich set of functional building blocks and an easy to use API for the developer to build real-time and batch applications. Apex runs natively on YARN and HDFS and is used in production in various industries. You will learn more about two use cases: A leading Ad Tech company serves billions of advertising impressions and collects terabytes of data from several data centers across the world every day. Apex was used to implement rapid actionable insights, for real-time reporting and allocation, utilizing Kafka and files as source, dimensional computation and low latency visualization. A customer in the IoT space uses Apex for Time Series service, including efficient storage of time series data, data indexing for quick retrieval and queries at high scale and precision. The platform leverages the high availability, horizontal scalability and operability of Apex.
Announcing the next-generation dA Platform 2, which includes open source Apache Flink and the new Application Manager. dA Platform 2 makes it easier than ever to operationalize your Flink-powered stream processing applications in production.
Apache Big Data 2016: Next Gen Big Data Analytics with Apache ApexApache Apex
Apache Apex is a next gen big data analytics platform. Originally developed at DataTorrent it comes with a powerful stream processing engine, rich set of functional building blocks and an easy to use API for the developer to build real-time and batch applications. Apex runs natively on YARN and HDFS and is used in production in various industries. You will learn about the Apex architecture, including its unique features for scalability, fault tolerance and processing guarantees, programming model and use cases.
http://apachebigdata2016.sched.org/event/6M0L/next-gen-big-data-analytics-with-apache-apex-thomas-weise-datatorrent
Ingestion and Dimensions Compute and Enrich using Apache ApexApache Apex
Presenter: Devendra Tagare - DataTorrent Engineer, Contributor to Apex, Data Architect experienced in building high scalability big data platforms.
This talk will be a deep dive into ingesting unbounded file data and streaming data from Kafka into Hadoop. We will also cover data enrichment and dimensional compute. Customer use-case and reference architecture.
Data Stream Processing - Concepts and FrameworksMatthias Niehoff
An overview on various concepts used in data stream processing. Most of them are used for solving problems in the field of time, focussing on processing time compared to event time. The techniques shown include the Dataflow API as it was introduced by Google and the concepts of stream and table duality. But I will also come up with other problems like data lookup and deployment of streaming applications and various strategies on solving these problems.
In the end I will give a brief outline on the implementation status of those strategies in the popular streaming frameworks Apache Spark Streaming, Apache Flink and Kafka Streams.
Similar to Data Stream Processing with Apache Flink (20)
This is a talk that I gave at the Data Council Berlin Meetup on May 16th, 2019
Abstract:
Stream processing is being rapidly adopted by the enterprise. While in the past, stream processing frameworks mostly provided Java- or Scala-based APIs, stream processing with SQL is growing increasingly popular because it makes stream processing accessible to non-programmers and significantly reduces the effort to solve common tasks.
About three years ago, the Apache Flink community started adding SQL support to process static and streaming data in a unified fashion. Today, Flink SQL powers production systems at Alibaba, Huawei, Lyft, and Uber. Fabian Hueske discusses the current state of Flink’s SQL support and explains the importance of Flink’s unified approach to process static and streaming data. After covering the basics, he shares common real-world use cases ranging from low-latency ETL to pattern detection and demonstrates how easily they can be addressed with Flink SQL.
Flink's Journey from Academia to the ASFFabian Hueske
Apache Flink is a project with a very active, supportive, and continuously growing community. Last year, Flink was among the top ten projects of the Apache Software Foundation with the most traffic on user and development mailing lists. Looking back, Flink started as a research prototype developed by three PhD students at TU Berlin in 2009. In 2014, the developers donated the code base to the ASF and joined the newly founded Apache Flink incubator project. Within three years, Flink grew into a healthy project and gained a lot of momentum.
In my presentation, I will discuss Flink's journey from an academic research project to one of the most active projects of the Apache Software Foundation. I will talk about the academic roots of the project, how the original developers got introduced to the ASF, Flink's incubation phase, and how its community evolved after it graduated and became an ASF top-level project. My talk will focus on the decisions, efforts, and circumstances that helped to grow a vital and welcoming open source community.
Why and how to leverage the power and simplicity of SQL on Apache FlinkFabian Hueske
SQL is the lingua franca of data processing and everybody working with data knows SQL. Apache Flink provides SQL support for querying and processing batch and streaming data. Flink’s SQL support powers large-scale production systems at Alibaba, Huawei, and Uber. Based on Flink SQL, these companies have built systems for their internal users as well as publicly offered services for paying customers. In my talk, I will discuss why you should and how you can (not being Alibaba or Uber) leverage the simplicity and power of SQL on Flink.
I will start exploring the use cases that Flink SQL was designed for and present real-world problems that it can solve. In particular, I'll explain why unified batch and stream processing is important and what it means to run SQL queries on streams of data. After discussing why and when you should use Flink SQL, I will show how to leverage its full potential. Since recently, the Flink community is working on a service that integrates a query interface, (external) table catalogs, and result serving functionality for static, appending, and updating result sets. I will discuss the design and planned features of this query service and how it will enable exploratory batch and streaming queries, ETL pipelines, and live updating query results that serve applications, such as real-time dashboards.
Streaming SQL to unify batch and stream processing: Theory and practice with ...Fabian Hueske
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Data Stream Processing with Apache Flink
1. Data Stream Processing with
Apache Flink
Fabian Hueske
@fhueske
Apache Flink Meetup Madrid, 25.02.2016
2. What is Apache Flink?
Apache Flink is an open source platform for
scalable stream and batch processing.
2
• The core of Flink is a distributed
streaming dataflow engine.
• Executes dataflows in
parallel on clusters
• Provides a reliable backend
for various workloads
• DataStream and DataSet
programming abstractions are
the foundation for user programs
and higher layers
3. What is Apache Flink?
3
Streaming topologies
Long batch pipelines
Machine Learning at scale
A stream processor with many faces
Graph Analysis
resource utilization
iterative algorithms
Mutable state
low-latency processing
5. 5
Apr ‘14 Jun ‘15Dec ‘14
0.70.60.5 0.9 0.10
Nov ‘15
Top level
0.8
Mar ‘15
1.0!
6. Growing and Vibrant Community
Flink is one of the largest and most active Apache big data projects:
• more than 150 contributors
• more than 600 forks
• more than 1000 Github stars (since yesterday)
6
11. What is Stream Processing?
11
Today, most data is continuously produced
• user activity logs, web logs, sensors, database
transactions, …
The common approach to analyze such data so far
• Record data stream to stable storage (DBMS, HDFS, …)
• Periodically analyze data with batch processing engine
(DBMS, MapReduce, ...)
Streaming processing engines analyze data
while it arrives
12. Why do Stream Processing?
Decreases the overall latency to obtain results
• No need to persist data in stable storage
• No periodic batch analysis jobs
Simplifies the data infrastructure
• Fewer moving parts to be maintained and coordinated
Makes time dimension of data explicit
• Each event has a timestamp
• Data can be processed based on timestamps
12
13. What are the Requirements?
Low latency
• Results in millisecond
High throughput
• Millions of events per second
Exactly-once consistency
• Correct results in case of failures
Out-of-order events
• Process events based on their associated time
Intuitive APIs
13
14. OS Stream Processors so far
Either low latency or high throughput
Exactly-once guarantees only with high latency
Lacking time semantics
• Processing by wall clock time only
• Events are processed in arrival order, not in the order they were
created
Shortcomings lead to complicated system designs
• Lambda architecture
14
16. Stream Processing with Flink
Low latency
• Pipelined processing engine
High throughput
• Controllable checkpointing overhead
Exactly-once guarantees
• Distributed snapshots
Support for out-of-order streams
• Processing semantics based on event-time
Programmability
• APIs similar to those known from the batch world
16
17. Flink in Streaming Architectures
17
Flink
Flink Flink
Elasticsearch, Hbase,
Cassandra, …
HDFS
Kafka
Analytics on static data
Data ingestion
and ETL
Analytics on data
in motion
19. The DataStream API
19
case class Event(location: Location, numVehicles: Long)
val stream: DataStream[Event] = …;
stream
.filter { evt => isIntersection(evt.location) }
20. The DataStream API
20
case class Event(location: Location, numVehicles: Long)
val stream: DataStream[Event] = …;
stream
.filter { evt => isIntersection(evt.location) }
.keyBy("location")
.timeWindow(Time.minutes(15), Time.minutes(5))
.sum("numVehicles")
21. The DataStream API
21
case class Event(location: Location, numVehicles: Long)
val stream: DataStream[Event] = …;
stream
.filter { evt => isIntersection(evt.location) }
.keyBy("location")
.timeWindow(Time.minutes(15), Time.minutes(5))
.sum("numVehicles")
.keyBy("location")
.mapWithState { (evt, state: Option[Model]) => {
val model = state.orElse(new Model())
(model.classify(evt), Some(model.update(evt)))
}}
23. Event-time Processing
Most data streams consist of events
• log entries, sensor data, user actions, …
• Events have an associated timestamp
Many analysis tasks are based on time
• “Average temperature every minute”
• “Count of processed parcels per hour”
• ...
Events often arrive out-of-order at processor
• Distributed sources, network delays, non-synced clocks, …
Stream processor must respect time of events for
consistent and sound results
• Most stream processors use wall clock time
23
24. Event Processing
24
Events occur on devices
Queue / Log
Events analyzed in a
stream processor
Stream Analysis
Events stored in a log
29. Event Processing
29
Event time windows
Arrival time windows
Instant event-at-a-time
Flink supports out-of-order streams (event time) windows,
arrival time windows (and mixtures) plus low latency processing.
First burst of events
Second burst of events
30. Event-time Processing
Event-time processing decouples job semantics
from processing speed
Analyze events from static data store and
online stream using the same program
Semantically sound and consistent results
Details:
http://data-artisans.com/how-apache-flink-enables-new-
streaming-applications-part-1
30
32. Monitoring & Dashboard
Many metrics exposed via REST interface
Web dashboard
• Submit, stop, and cancel jobs
• Inspect running and completed jobs
• Analyze performance
• Check exceptions
• Inspect configuration
• …
32
33. Highly-available Cluster Setup
Stream applications run for weeks, months, …
• Application must never fail!
• No single-point-of-failure component allowed
Flink supports highly-available cluster setups
• Master failures are resolved using Apache Zookeeper
• Worker failures are resolved by master
Stand-alone cluster setup
• Requires (manually started) stand-by masters and workers
YARN cluster setup
• Masters and workers are automatically restarted
33
34. A save point is a consistent snapshot of a job
• Includes source offsets and operator state
• Stop job
• Restart job from save point
What can I use it for?
• Fix or update your job
• A/B testing
• Update Flink
• Migrate cluster
• …
Details:
http://data-artisans.com/how-apache-flink-enables-new-
streaming-applications
Save Points
34
38. Stream SQL and Table API
Structured queries over data streams
• LINQ-style Table API
• Stream SQL
Based on Apache Calcite
• SQL Parser and optimizer
“Compute every hour the number of orders and
number ordered units for each product.”
38
SELECT STREAM
productId,
TUMBLE_END(rowtime, INTERVAL '1' HOUR) AS rowtime,
COUNT(*) AS cnt,
SUM(units) AS units
FROM
Orders
GROUP BY
TUMBLE(rowtime, INTERVAL '1' HOUR),
productId;
39. Complex Event Processing
Identify complex patterns in event streams
• Correlations & sequences
Many applications
• Network intrusion detection via access patterns
• Item tracking (parcels, devices, …)
• …
CEP depends on low latency processing
• Most CEP system are not distributed
CEP in Flink
• Easy-to-use API to define CEP patterns
• Integration with Table API for structured analytics
• Low-latency and high-throughput engine
39
40. Dynamic Job Parallelism
Adjusting parallelism of tasks without (significantly)
interrupting the program
Initial version based on save points
• Trigger save point
• Stop job
• Restart job with adjusted parallelism
Later change parallelism while job is running
Vision is automatic adaption based on throughput
40
41. Wrap up!
Flink is a kick-ass stream processor…
• Low latency & high throughput
• Exactly-once consistency
• Event-time processing
• Support for out-of-order streams
• Intuitive API
with lots of features in the pipeline…
and a reliable batch processor as well!
41
42. I ♥ Squirrels, do you?
More Information at
• http://flink.apache.org/
Free Flink training at
• http://dataartisans.github.io/flink-training
Sign up for user/dev mailing list
Get involved and contribute
Follow @ApacheFlink on Twitter
42
Flink is an analytical system
streaming topology: real-time; low latency
“native”: build-in support in the system, no working around, no black-box
next slide: define native by some “non-native” examples
People previously made the case that high throughput and low latency are mutually exclusive