Unifying Streaming and Historical Telemetry Data For Real-time Performance Reporting

Upwork has the biggest closed-loop online dataset of jobs and job seekers in labor history (>10M Profiles, >100M Job Posts, Job Proposals and Hiring Decisions, >10B of Messages, Transaction and Feedback Data). Besides sheer quantity, our data is also contextually very rich. We have client and contractor data for the entire job-funnel – from finding jobs to getting the job done. For various machine learning applications including search and recommendations and labor marketplace optimization (rate, supply and demand), we heavily relied on a Greenplum-based data warehouse solution for data processing and ad-hoc ML pipelines (weka, scikit-learn, R) for offline model development and online model scoring. In this talk, we present our modernization efforts in moving towards a 1) holistic data processing infrastructure for batch and stream data processing using S3, Kinesis, Spark and Spark Structured Streaming 2) model development using Spark MLlib and other ML libraries for Spark 3) model serving using Databricks Model Scoring, Scoring over Structured Streams and microservices and 3) how we orchestrate and streamline all these processes using Apache Airflow and a CI/CD workflow customized to our Data Science product engineering needs. The focus of this talk is on how we were able to leverage the Databricks service offering to reduce DevOps overhead and costs, complete the entire modernization with moderate efforts and adopt a collaborative notebook-based solution for all our data scientists to develop model, reuse features and share results. We will shared the core lessons learned and pitfalls we encountered during this journey.

How to Rebuild an End-to-End ML Pipeline with Databricks and Upwork with Than...

Redis accelerates Apache Spark execution by 45 times, when used as a shared distributed in-memory datastore for Spark in analyses like time series data range queries. With the redis module for machine learning, redis-ml, implementation of spark-ml models gains a new real time serving layer that offloads processing of models directly in Redis, allows multiple applications to reuse the same models and speeds up classification and execution of these models by 13x. Join this session to learn more about the Redis Labs’ connector for Apache Spark that enhances production implementations of real-time big data processing.

Analytics at the Real-Time Speed of Business: Spark Summit East talk by Manis...

"The modernization of the tobacco industry is resulting in a shift towards a more data-driven approach to trade, operations and the consumer. The need to scale while maintaining margins is paramount, and today’s consumer requires more personalized engagement and value at every interaction to drive sales and revenue. At Altria, we’re at the forefront of this evolution, leveraging hundreds of terabytes of big data (such as point-of-sale, clickstream, mobile data, and more) and machine learning to improve our ability to make smarter decisions and outpace the competition. This talk recaps our big data journey from a legacy data infrastructure (Teradata), isolated data systems, and the lack of resources which prevented our ability to move quickly and scale, to our current state where we’ve successfully implemented, architected and on-boarded tools and processes in stages of data acquisition, store, prepare, and business intelligence with Azure Data Lake, Azure Databricks, Azure Data factory, APIs Managements, Streaming and Hosting technologies and provided Data Analytics platform. We’ll discuss the roadblocks we came across, how we overcame them, and how we employed a unified approach to big data and analytics through the fully managed Azure Databricks platform and the Azure suite of tools which allowed us to streamline workflows, improve operational performance, and ultimately introduce new customer experiences that drive engagement and revenue."

Journey to Creating a 360 View of the Customer: Implementing Big Data Strateg...

Presto, an open source distributed SQL engine, is widely recognized for its low-latency queries, high concurrency, and native ability to query multiple data sources. Proven at scale in a variety of use cases at Airbnb, Comcast, GrubHub, Facebook, FINRA, LinkedIn, Lyft, Netflix, Twitter, and Uber, in the last few years Presto experienced an unprecedented growth in popularity in both on-premises and cloud deployments over Object Stores, HDFS, NoSQL and RDBMS data stores.

Presto: Fast SQL-on-Anything (including Delta Lake, Snowflake, Elasticsearch ...

This talk presents the web application that calculates real-time health scores at a very rapid speed using Spark on Kubernates. A health score represents a machine’s lifetime and it is commonly used as a landmark for making a decision on whether to replace the machine with new one for high productivity maintenance. Therefore, it is very important to observe the health scores of the large number of machines in a factory without a delay. To cope with this issue, the BISTel has applied the stream processing using Spark and services the real-time health score application.

Real-Time Health Score Application using Apache Spark on Kubernetes

Moving at the speed of a startup often means rapid iterative development, which can lead to a patchwork of systems and processes. In the early days at Kik (one of the most popular chat apps among U.S. teens), the data team was able to move extremely quickly but often at the expense of scalable data engineering. In this session, Kik’s head of data will share the eight things they did to save time and money. The team took their data stack from a complex combination of systems and processes to a scalable, simple, and robust platform leveraging Apache Spark and Databricks to make data super easy for everyone in the company to use.

Scaling Through Simplicity—How a 300 million User Chat App Reduced Data Engin...

In this presentation, we will study a recent use case we implemented recently. In this use case we are working with a large, metropolitan fire department. Our company has already created a complete analytics architecture for the department based upon Azure Data Factory, Databricks, Delta Lake, Azure SQL and Azure SQL Server Analytics Services (SSAS). While this architecture works very well for the department, they would like to add a real-time channel to their reporting infrastructure. This channel should serve up the following information: •The most up-to-date locations and status of equipment (fire trucks, ambulances, ladders etc.) • The current locations and status of firefighters, EMT personnel and other relevant fire department employees • The current list of active incidents within the city The above information should be visualized through an automatically updating dashboard. The central component of the dashboard will be map which automatically updates with the locations and incidents. This view should be as real-time as possible and will be used by the fire chiefs to assist with real-time decision-making on resource and equipment deployments. In this presentation, we will leverage Databricks, Spark Structured Streaming, Delta Lake and the Azure platform to create this real-time delivery channel.

Build Real-Time Applications with Databricks Streaming

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Organizations are adopting data digitization and data-driven decision making is at the heart of this transformation. Cloud Data Lakes and Datawarehouses provide great flexibility to proto-type and roll out applications continuously at much lower costs. Transactional databases are optimized for processing huge volumes of transactions in real-time, whereas the cloud data lake needs to be optimized for analyzing huge volumes of data quickly. This brings about a challenge in creating a streamlined data flow process from capturing realtime transactions into a cloud datawarehouse to drive realtime insights in a scalable and cost effective manner. In this session, we’ll show how organizations can easily overcome that challenge by adopting a robust platform with StreamSets and Delta Lake. StreamSets provides a no-code framework to automate ingestion of transactional data and data processing on Spark, while Delta Lake provides ACID transactions, scalable metadata handling, and unifies streaming and batch data processing.

Power Your Delta Lake with Streaming Transactional Changes

Vulnerabilities such as Spectre and Meltdown continue to plague many production servers, based on Intel CPUs. Our solution involves software-based monitoring of hardware counters and sending that data to Apache Spark clusters for threat detection. We leverage Spark's support for support vector machine (SVM) inference. Our machine learning models are trained off-line by a data scientist within a Jupyter notebook environment. As new models are validated, they can be easily deployed to the Spark cluster from the notebook. We have standardized model export and import using the ONNX machine learning open file format. In our presentation, we will demo the full pipeline, from model training to deployment. We will discuss the various challenges when deploying ML-based cyber-threat detection at scale using Apache Spark. For example, we found that gaps in detection can occur when Spark models are updated. We will describe a novel data ingestion architecture, based on Apache Kafka, that we developed to deal with this issue.

Scaling ML-Based Threat Detection For Production Cyber Attacks

DataWorks Summit/Hadoop Summit

Building Data Lakes with Apache Airflow

Gary Stafford

Intuit Analytics Cloud 101

Data completeness is key for building any machine learning and deep learning model. The reality is that outliers and nulls widely exist in the data. The traditional methods of using fixed values or statistical metrics (min, max and mean) does not consider the relationship and patterns within the data. Most time it offers poor accuracy and would introduce additional outliers. Also, given our large data size, the computation is an extremely time-consuming process and a lot of time it could be constrained by the limited resource on local computer. To address those issues, we have developed a new approach that will first leverage the similarity within our data points based on the nature of data source then using a collaborative AI model to fill null values and correct outliers. In this talk, we will walk through the way we use a distributed framework to partition data by KDB tree for neighbor discovery and a collaborative filtering AI technology to fill the missing values and correct outliers. In addition, we will demonstrate how we reply on delta lake and MLflow for data and model management.

Bridging the Completeness of Big Data on Databricks

In financial world, petabytes of transactional data need to be stored, processed, distributed across global customers and partners in a secured, compliant and accurate way with high availability, resiliency and observability. In American Express, we need to generate hundreds of different kinds of reports and distribute to thousands of partners in different schedules based on billions of daily transactions. Our next generation reporting framework is a highly configurable enterprise framework that caters to different reporting needs with zero development. This reusable framework entails dynamic scheduling of partner-specific reports, transforming, aggregating and filtering the data into different dataframes using inbuilt as well as user-defined spark functions leveraging spark’s in memory and parallel processing capabilities. This also encompasses applying business rules and converting it into different formats by embedding template engines like FreeMarker and Mustache into the framework.

Configuration Driven Reporting On Large Dataset Using Apache Spark

New use cases under the Industry 4.0 umbrella are playing a key role in improving factory operations, process optimization, cost reduction and quality improvement. We propose an event streaming architecture to streamline the information flow all the way from the factory to the main data center. Building such a streaming architecture enables a manufacturer to react faster to critical operational events. However, it presents two main challenges: Data acquisition in real time: data should be collected regardless of its location or access challenges are. It is commonplace to ingest data from hundreds of heterogeneous data sources (ERP, MES, Sensors, maintenance systems, etc). Event processing in real time: events collected from different parts of the organization should be combined into actionable insights in real time. This is extremely challenging in a context where events can be lost or delayed. In this talk, we show how Apache NiFi and MiNiFi can be used to collect a wide range of datasources in real-time, connecting the industrial and information worlds. Then, we show how Apache Flink’s unique features enables us to make sense of this data. For instance, we will explain how Flink’s time management such Event Time mode, late arrival handling and watermark mechanism can be used to address the challenge of processing IoT data originating from geographically distributed plants. Finally, we demonstrate an end to end streaming architecture for Industry 4.0 based on the Cloudera DataFlow platform.

Disrupting Big Data with Apache Spark in the Cloud

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Rabobank is a worldwide food- and agri-bank from the Netherlands. Rabobank wants to make a substantial contribution to welfare and prosperity in the Netherlands and to feeding the world sustainably. Rabobank Group operates through Rabobank and its subsidiaries in 40 countries. Rabobank is active in both retail and wholesale banking. For our wholesale clients we provide real-time business insight information by making use of Cloudera and Hortonworks technology. An example is our recently launched service that gives insight in market performance of Rabobank customers, starting with the dairy farmers market segment, by making use of benchmark information. Our current technology stack contains Hortonworks Data Flow (HDF) and Cloudera Hadoop (CDH). Our real-time data stream is implemented by making use of Kafka and Nifi from HDF. Cloudera is used to store the data needed for the business insight information, mainly in HDFS and HBase. During our presentation we will provides insight about the project approach, the architecture and actual implementation. Speaker Jeroen Wolffensperger, Solution Architect Data, Rabobank Martijn Groen, Delivery Manager Data , Rabobank Netherlands

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DataWorks Summit

Sensor devices and their associated data streams are rapidly becoming a big source of differentiation for organizations that can effectively harness this information to drive new insights and take action. The breakthrough is enabled by new solutions for applying visual data discovery to streaming data in motion. This session will focus on industrial analytics and how best to apply new technologies that drive synergies between IT and OT.

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Webinar presented by Prateek Kapadia, CTO, Flytxt and Ryan Betts, CTO, VoltDB. Prateek and Ryan highlight the technology stack for Fast + Big data and iterative analytics using Hadoop and VoltDB. In addition, they will outline use cases for Big Data analytics with Hadoop, iterative analytics and machine learning using Spark and real-time analytics using VoltDB supplemented by Big Data + iterative analytics.

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VoltDB

Modern data-driven business infrastructure is not as effective as it should be when it comes to critical decision making. Eng-to-End Data pipelines are composed out of fundamentally diverse pieces of tech, each focusing on a specific frontend (e.g., DataFrames, Tensors, Streams) and running in total isolation, thus, being highly unoptimised and complex to integrate with event-based business logic. Our research group has been looking into ways we can use advanced systems theory to compile, optimise and execute distributed functions in unison across the whole spectrum of data-driven programming, leading to a unified way to combine analytics and services all the way down to hardware execution and make continuous intelligence a reality. Key Takeaways Introducing the concept of Continuous Intelligence and why we are not there yet. Pinpointing weaknesses in the current way we structure data-driven pipelines today Explaining the potential of an Intermediate Representation (IR) and Shared Hardware Execution support to solve the problem. Presenting our vision on how this new tech can be used to radically change the way we declare and distill knowledge from data in a fast-changing world.

Continuous Intelligence - Intersecting Event-Based Business Logic and ML

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Pivotal Big Data Suite: A Technical Overview

VMware Tanzu

Interested in learning how Showtime is leveraging the power of Spark to transform a traditional premium cable network into a data-savvy analytical competitor? The growth in our over-the-top (OTT) streaming subscription business has led to an abundance of user-level data not previously available. To capitalize on this opportunity, we have been building and evolving our unified platform which allows data scientists and business analysts to tap into this rich behavioral data to support our business goals. We will share how our small team of data scientists is creating meaningful features which capture the nuanced relationships between users and content; productionizing machine learning models; and leveraging MLflow to optimize the runtime of our pipelines, track the accuracy of our models, and log the quality of our data over time. From data wrangling and exploration to machine learning and automation, we are augmenting our data supply chain by constantly rolling out new capabilities and analytical products to help the organization better understand our subscribers, our content, and our path forward to a data-driven future. Authors: Josh McNutt, Keria Bermudez-Hernandez

Data-Driven Transformation: Leveraging Big Data at Showtime with Apache Spark

Enterprises are rapidly adopting stream computing backbones, in-memory data stores, change data capture, and other low-latency approaches for end-to-end applications. As businesses modernize their data architectures over the next several years, they will begin to evolve toward all-streaming architectures. In this webcast, Wikibon, Attunity, and MemSQL will discuss how enterprise data professionals should migrate their legacy architectures in this direction. They will provide guidance for migrating data lakes, data warehouses, data governance, and transactional databases to support all-streaming architectures for complex cloud and edge applications. They will discuss how this new architecture will drive enterprise strategies for operationalizing artificial intelligence, mobile computing, the Internet of Things, and cloud-native microservices. Link to the Wikibon report - wikibon.com/wikibons-2018-big-data-analytics-trends-forecast Link to Attunity Streaming CDC Book Download - http://www.bit.ly/cdcbook Link to MemSQL's Free Data Pipeline Book - http://go.memsql.com/oreilly-data-pipelines

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It seems that everyone is talking about Big Data these days. As the Industrial Internet evolves and continues to feed the Big Data machine, companies are finding it more and more critical to develop strategies for turning data into information and information in intelligence. There’s certainly not a shortage of technologies in the marketplace to start playing with the petabytes of data coming from within and outside of the enterprise. This is the powerpoint presentation used by our guest speaker Barbara (Barb) Kruetzkamp, IT Leader in Data Management at GE Aviation, to discuss approaches and frameworks to enhance business intelligence capabilities by linking industrial and enterprise (internal) data. We also compared traditional vs. transformational IT execution models, and how to put data first. Barb was born and raised in Cincinnati, Ohio. She attended Thomas More College in Kentucky, graduating with a B.A. in Computer Science and Business Administration. She built technical depth leading infrastructure architecture, then as a Chief Enterprise Architect at GE Corporate. Barb returned to GE Aviation in 2014 to lead the master data management initiative. Barb enjoys volunteering with the developmentally disabled, STEM and high school band students. She also likes to cook, jazzercise, and travel abroad. Her 3 kids keep life active and fun.

BDPA Cincinnati: 'Big Data - Friend or Foe?'

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Set Your Data In Motion - CTO Roundtable

confluent

Technical thought leadership presentation to discuss how leading organizations move to real-time architecture to support business growth and enhance customer experience. This is a forum to discuss use cases with your peers to understand how other digital-native companies are utilizing data in motion to drive competitive advantage. Agenda: - Data in Motion with Event Streaming and Apache Kafka - Streaming ETL Pipelines - IT Modernisation and Hybrid Multi-Cloud - Customer Experience and Customer 360 - IoT and Big Data Processing - Machine Learning and Analytics

Event Streaming CTO Roundtable for Cloud-native Kafka Architectures

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Your data analytics platform

Jeannette Browning

The challenge of computing big data for evolving digital business processes demands variety of computation techniques and engines (SQL, OLAP, time-series, graph, document store), but working in unified framework. A simple architecture of data transformations while ensuring the security, governance, and operational administration are the necessary critical components for enterprise production environments supporting day-to-day business processes. In this session, you will learn about best practices & critical components to ensure business value from latest production deployments. Hear how existing customers are using SAP Vora and the value they have achieved so far with this in-memory engine for distributed data processing. The session provides you with a clear understanding how SAP Vora and open source components like Apache Hadoop and Apache Spark offer an architecture that supports a wide variety of use cases and industries. You will also receive very useful insight where to find development resources, test drive demos, and general documentation.

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DW Migration Webinar-March 2022.pptx

The world of data architecture began with applications. Next came data warehouses. Then text was organized into a data warehouse. Then one day the world discovered a whole new kind of data that was being generated by organizations. The world found that machines generated data that could be transformed into valuable insights. This was the origin of what is today called the data lakehouse. The evolution of data architecture continues today. Come listen to industry experts describe this transformation of ordinary data into a data architecture that is invaluable to business. Simply put, organizations that take data architecture seriously are going to be at the forefront of business tomorrow. This is an educational event. Several of the authors of the book Building the Data Lakehouse will be presenting at this symposium.

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In this session, learn how to quickly supplement your on-premises Hadoop environment with a simple, open, and collaborative cloud architecture that enables you to generate greater value with scaled application of analytics and AI on all your data. You will also learn five critical steps for a successful migration to the Databricks Lakehouse Platform along with the resources available to help you begin to re-skill your data teams.

5 Critical Steps to Clean Your Data Swamp When Migrating Off of Hadoop

Bad data leads to bad decisions and broken customer experiences. Organizations depend on complete and accurate data to power their business, maintain efficiency, and uphold customer trust. With thousands of datasets and pipelines running, how do we ensure that all data meets quality standards, and that expectations are clear between producers and consumers? Investing in shared, flexible components and practices for monitoring data health is crucial for a complex data organization to rapidly and effectively scale. At Zillow, we built a centralized platform to meet our data quality needs across stakeholders. The platform is accessible to engineers, scientists, and analysts, and seamlessly integrates with existing data pipelines and data discovery tools. In this presentation, we will provide an overview of our platform’s capabilities, including: Giving producers and consumers the ability to define and view data quality expectations using a self-service onboarding portal Performing data quality validations using libraries built to work with spark Dynamically generating pipelines that can be abstracted away from users Flagging data that doesn’t meet quality standards at the earliest stage and giving producers the opportunity to resolve issues before use by downstream consumers Exposing data quality metrics alongside each dataset to provide producers and consumers with a comprehensive picture of health over time

Democratizing Data Quality Through a Centralized Platform

Data scientists face numerous challenges throughout the data science workflow that hinder productivity. As organizations continue to become more data-driven, a collaborative environment is more critical than ever — one that provides easier access and visibility into the data, reports and dashboards built against the data, reproducibility, and insights uncovered within the data.. Join us to hear how Databricks’ open and collaborative platform simplifies data science by enabling you to run all types of analytics workloads, from data preparation to exploratory analysis and predictive analytics, at scale — all on one unified platform.

Learn to Use Databricks for Data Science

Application performance monitoring (APM) has become the cornerstone of software engineering allowing engineering teams to quickly identify and remedy production issues. However, as the world moves to intelligent software applications that are built using machine learning, traditional APM quickly becomes insufficient to identify and remedy production issues encountered in these modern software applications. As a lead software engineer at NewRelic, my team built high-performance monitoring systems including Insights, Mobile, and SixthSense. As I transitioned to building ML Monitoring software, I found the architectural principles and design choices underlying APM to not be a good fit for this brand new world. In fact, blindly following APM designs led us down paths that would have been better left unexplored. In this talk, I draw upon my (and my team’s) experience building an ML Monitoring system from the ground up and deploying it on customer workloads running large-scale ML training with Spark as well as real-time inference systems. I will highlight how the key principles and architectural choices of APM don’t apply to ML monitoring. You’ll learn why, understand what ML Monitoring can successfully borrow from APM, and hear what is required to build a scalable, robust ML Monitoring architecture.

Why APM Is Not the Same As ML Monitoring

Autonomy and ownership are core to working at Stitch Fix, particularly on the Algorithms team. We enable data scientists to deploy and operate their models independently, with minimal need for handoffs or gatekeeping. By writing a simple function and calling out to an intuitive API, data scientists can harness a suite of platform-provided tooling meant to make ML operations easy. In this talk, we will dive into the abstractions the Data Platform team has built to enable this. We will go over the interface data scientists use to specify a model and what that hooks into, including online deployment, batch execution on Spark, and metrics tracking and visualization.

The Function, the Context, and the Data—Enabling ML Ops at Stitch Fix

In this talk, I will dive into the stage level scheduling feature added to Apache Spark 3.1. Stage level scheduling extends upon Project Hydrogen by improving big data ETL and AI integration and also enables multiple other use cases. It is beneficial any time the user wants to change container resources between stages in a single Apache Spark application, whether those resources are CPU, Memory or GPUs. One of the most popular use cases is enabling end-to-end scalable Deep Learning and AI to efficiently use GPU resources. In this type of use case, users read from a distributed file system, do data manipulation and filtering to get the data into a format that the Deep Learning algorithm needs for training or inference and then sends the data into a Deep Learning algorithm. Using stage level scheduling combined with accelerator aware scheduling enables users to seamlessly go from ETL to Deep Learning running on the GPU by adjusting the container requirements for different stages in Spark within the same application. This makes writing these applications easier and can help with hardware utilization and costs. There are other ETL use cases where users want to change CPU and memory resources between stages, for instance there is data skew or perhaps the data size is much larger in certain stages of the application. In this talk, I will go over the feature details, cluster requirements, the API and use cases. I will demo how the stage level scheduling API can be used by Horovod to seamlessly go from data preparation to training using the Tensorflow Keras API using GPUs. The talk will also touch on other new Apache Spark 3.1 functionality, such as pluggable caching, which can be used to enable faster dataframe access when operating from GPUs.

Stage Level Scheduling Improving Big Data and AI Integration

In this talk, I would like to introduce an open-source tool built by our team that simplifies the data conversion from Apache Spark to deep learning frameworks. Imagine you have a large dataset, say 20 GBs, and you want to use it to train a TensorFlow model. Before feeding the data to the model, you need to clean and preprocess your data using Spark. Now you have your dataset in a Spark DataFrame. When it comes to the training part, you may have the problem: How can I convert my Spark DataFrame to some format recognized by my TensorFlow model? The existing data conversion process can be tedious. For example, to convert an Apache Spark DataFrame to a TensorFlow Dataset file format, you need to either save the Apache Spark DataFrame on a distributed filesystem in parquet format and load the converted data with third-party tools such as Petastorm, or save it directly in TFRecord files with spark-tensorflow-connector and load it back using TFRecordDataset. Both approaches take more than 20 lines of code to manage the intermediate data files, rely on different parsing syntax, and require extra attention for handling vector columns in the Spark DataFrames. In short, all these engineering frictions greatly reduced the data scientists’ productivity. The Databricks Machine Learning team contributed a new Spark Dataset Converter API to Petastorm to simplify these tedious data conversion process steps. With the new API, it takes a few lines of code to convert a Spark DataFrame to a TensorFlow Dataset or a PyTorch DataLoader with default parameters. In the talk, I will use an example to show how to use the Spark Dataset Converter to train a Tensorflow model and how simple it is to go from single-node training to distributed training on Databricks.

Simplify Data Conversion from Spark to TensorFlow and PyTorch

There is no doubt Kubernetes has emerged as the next generation of cloud native infrastructure to support a wide variety of distributed workloads. Apache Spark has evolved to run both Machine Learning and large scale analytics workloads. There is growing interest in running Apache Spark natively on Kubernetes. By combining the flexibility of Kubernetes and scalable data processing with Apache Spark, you can run any data and machine pipelines on this infrastructure while effectively utilizing resources at disposal. In this talk, Rajesh Thallam and Sougata Biswas will share how to effectively run your Apache Spark applications on Google Kubernetes Engine (GKE) and Google Cloud Dataproc, orchestrate the data and machine learning pipelines with managed Apache Airflow on GKE (Google Cloud Composer). Following topics will be covered: – Understanding key traits of Apache Spark on Kubernetes- Things to know when running Apache Spark on Kubernetes such as autoscaling- Demonstrate running analytics pipelines on Apache Spark orchestrated with Apache Airflow on Kubernetes cluster.

Scaling your Data Pipelines with Apache Spark on Kubernetes

Pipelines have become ubiquitous, as the need for stringing multiple functions to compose applications has gained adoption and popularity. Common pipeline abstractions such as “fit” and “transform” are even shared across divergent platforms such as Python Scikit-Learn and Apache Spark. Scaling pipelines at the level of simple functions is desirable for many AI applications, however is not directly supported by Ray’s parallelism primitives. In this talk, Raghu will describe a pipeline abstraction that takes advantage of Ray’s compute model to efficiently scale arbitrarily complex pipeline workflows. He will demonstrate how this abstraction cleanly unifies pipeline workflows across multiple platforms such as Scikit-Learn and Spark, and achieves nearly optimal scale-out parallelism on pipelined computations. Attendees will learn how pipelined workflows can be mapped to Ray’s compute model and how they can both unify and accelerate their pipelines with Ray.

Scaling and Unifying SciKit Learn and Apache Spark Pipelines

In this talk about zipline, we will introduce a new type of windowing construct called a sawtooth window. We will describe various properties about sawtooth windows that we utilize to achieve online-offline consistency, while still maintaining high-throughput, low-read latency and tunable write latency for serving machine learning features.We will also talk about a simple deployment strategy for correcting feature drift – due operations that are not “abelian groups”, that operate over change data.

Sawtooth Windows for Feature Aggregations

We want to present multiple anti patterns utilizing Redis in unconventional ways to get the maximum out of Apache Spark.All examples presented are tried and tested in production at Scale at Adobe. The most common integration is spark-redis which interfaces with Redis as a Dataframe backing Store or as an upstream for Structured Streaming. We deviate from the common use cases to explore where Redis can plug gaps while scaling out high throughput applications in Spark. Niche 1 : Long Running Spark Batch Job – Dispatch New Jobs by polling a Redis Queue · Why? o Custom queries on top a table; We load the data once and query N times · Why not Structured Streaming · Working Solution using Redis Niche 2 : Distributed Counters · Problems with Spark Accumulators · Utilize Redis Hashes as distributed counters · Precautions for retries and speculative execution · Pipelining to improve performance

Redis + Apache Spark = Swiss Army Knife Meets Kitchen Sink

In the era of microservices, decentralized ML architectures and complex data pipelines, data quality has become a bigger challenge than ever. When data is involved in complex business processes and decisions, bad data can, and will, affect the bottom line. As a result, ensuring data quality across the entire ML pipeline is both costly, and cumbersome while data monitoring is often fragmented and performed ad hoc. To address these challenges, we built whylogs, an open source standard for data logging. It is a lightweight data profiling library that enables end-to-end data profiling across the entire software stack. The library implements a language and platform agnostic approach to data quality and data monitoring. It can work with different modes of data operations, including streaming, batch and IoT data. In this talk, we will provide an overview of the whylogs architecture, including its lightweight statistical data collection approach and various integrations. We will demonstrate how the whylogs integration with Apache Spark achieves large scale data profiling, and we will show how users can apply this integration into existing data and ML pipelines.

Re-imagine Data Monitoring with whylogs and Spark

Machine learning (ML) models are typically part of prediction queries that consist of a data processing part (e.g., for joining, filtering, cleaning, featurization) and an ML part invoking one or more trained models. In this presentation, we identify significant and unexplored opportunities for optimization. To the best of our knowledge, this is the first effort to look at prediction queries holistically, optimizing across both the ML and SQL components. We will present Raven, an end-to-end optimizer for prediction queries. Raven relies on a unified intermediate representation that captures both data processing and ML operators in a single graph structure. This allows us to introduce optimization rules that (i) reduce unnecessary computations by passing information between the data processing and ML operators (ii) leverage operator transformations (e.g., turning a decision tree to a SQL expression or an equivalent neural network) to map operators to the right execution engine, and (iii) integrate compiler techniques to take advantage of the most efficient hardware backend (e.g., CPU, GPU) for each operator. We have implemented Raven as an extension to Spark’s Catalyst optimizer to enable the optimization of SparkSQL prediction queries. Our implementation also allows the optimization of prediction queries in SQL Server. As we will show, Raven is capable of improving prediction query performance on Apache Spark and SQL Server by up to 13.1x and 330x, respectively. For complex models, where GPU acceleration is beneficial, Raven provides up to 8x speedup compared to state-of-the-art systems. As part of the presentation, we will also give a demo showcasing Raven in action.

Raven: End-to-end Optimization of ML Prediction Queries

Semantic segmentation is the classification of every pixel in an image/video. The segmentation partitions a digital image into multiple objects to simplify/change the representation of the image into something that is more meaningful and easier to analyze [1][2]. The technique has a wide variety of applications ranging from perception in autonomous driving scenarios to cancer cell segmentation for medical diagnosis. Exponential growth in the datasets that require such segmentation is driven by improvements in the accuracy and quality of the sensors generating the data extending to 3D point cloud data. This growth is further compounded by exponential advances in cloud technologies enabling the storage and compute available for such applications. The need for semantically segmented datasets is a key requirement to improve the accuracy of inference engines that are built upon them. Streamlining the accuracy and efficiency of these systems directly affects the value of the business outcome for organizations that are developing such functionalities as a part of their AI strategy. This presentation details workflows for labeling, preprocessing, modeling, and evaluating performance/accuracy. Scientists and engineers leverage domain-specific features/tools that support the entire workflow from labeling the ground truth, handling data from a wide variety of sources/formats, developing models and finally deploying these models. Users can scale their deployments optimally on GPU-based cloud infrastructure to build accelerated training and inference pipelines while working with big datasets. These environments are optimized for engineers to develop such functionality with ease and then scale against large datasets with Spark-based clusters on the cloud.

Processing Large Datasets for ADAS Applications using Apache Spark

At Adobe Experience Platform, we ingest TBs of data every day and manage PBs of data for our customers as part of the Unified Profile Offering. At the heart of this is a bunch of complex ingestion of a mix of normalized and denormalized data with various linkage scenarios power by a central Identity Linking Graph. This helps power various marketing scenarios that are activated in multiple platforms and channels like email, advertisements etc. We will go over how we built a cost effective and scalable data pipeline using Apache Spark and Delta Lake and share our experiences. What are we storing? Multi Source – Multi Channel Problem Data Representation and Nested Schema Evolution Performance Trade Offs with Various formats Go over anti-patterns used (String FTW) Data Manipulation using UDFs Writer Worries and How to Wipe them Away Staging Tables FTW Datalake Replication Lag Tracking Performance Time!

Massive Data Processing in Adobe Using Delta Lake

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