Diving Into Delta Lake: Unpacking The Transaction Log
The transaction log is key to understanding Delta Lake because it is the common thread that runs through many of its most important features, including ACID transactions, scalable metadata handling, time travel, and more. In this article, we’ll explore what the transaction log is, how it works at the file level, and how it offers...
Productionizing Machine Learning with Delta Lake
Try out this notebook series in Databricks - part 1 (Delta Lake), part 2 (Delta Lake + ML) For many data scientists, the process of building and tuning machine learning models is only a small portion of the work they do every day. The vast majority of their time is spent doing the less-than-glamorous (but...
Announcing Databricks Runtime 5.5 and Runtime 5.5 for Machine Learning
Databricks is pleased to announce the release of Databricks Runtime 5.5. This release includes Apache Spark 2.4.3 along with several important improvements and bug fixes as noted in the latest release notes [Azure|AWS]. We recommend all users upgrade to take advantage of this new runtime release. This blog post gives a brief overview of some...
Scaling Genomic Workflows with Spark SQL BGEN and VCF Readers
In the past decade, the amount of available genomic data has exploded as the price of genome sequencing has dropped. Researchers are now able to scan for associations between genetic variation and diseases across cohorts of hundreds of thousands of individuals from projects such as the UK Biobank. These analyses will lead to a deeper...
Accurately Building Genomic Cohorts at Scale with Delta Lake and Spark SQL
This is the second post in our “Genomic Analysis at Scale” series. In our first post, we explored a simple problem: how to provide real-time aggregates when sequencing large volumes of genomes. We solved this problem by using Delta Lake and a streaming pipeline built using Spark SQL. In this blog, we focus on the more advanced...
Simplifying Streaming Stock Analysis using Delta Lake and Apache Spark: On-Demand Webinar and FAQ Now Available!
On June 13th, we hosted a live webinar — Simplifying Streaming Stock Analysis using Delta Lake and Apache Spark — with Junta Nakai, Industry Leader - Financial Services at Databricks, John O’Dwyer, Solution Architect at Databricks, and Denny Lee, Technical Product Marketing Manager at Databricks. This is the first webinar in a series of financial...
Detecting Bias with SHAP
StackOverflow's annual developer survey concluded earlier this year, and they have graciously published the (anonymized) 2019 results for analysis. They're a rich view into the experience of software developers around the world -- what's their favorite editor? how many years of experience? tabs or spaces? and crucially, salary. Software engineers' salaries are good, and sometimes...
Hyperparameter Tuning with MLflow, Apache Spark MLlib and Hyperopt
Hyperparameter tuning is a common technique to optimize machine learning models based on hyperparameters, or configurations that are not learned during model training. Tuning these configurations can dramatically improve model performance. However, hyperparameter tuning can be computationally expensive, slow, and unintuitive even for experts. Databricks Runtime 5.4 and 5.4 ML (Azure | AWS) introduce new...
Advanced Analytics with HyperLogLog Functions in Apache Spark
This is a community guest blog from Sim Simeonov, the founder & CTO of Swoop and IPM.ai. Pre-aggregation is a common technique in the high-performance analytics toolbox. For example, 10 billion rows of website visitation data per hour may be reducible to 10 million rows of visit counts, aggregated by the superset of dimensions used...
Spark + AI Summit 2019 Product Announcements and Recap. Watch the keynote recordings today!
Spark + AI Summit 2019, the world’s largest data and machine learning conference for the Apache Spark™ Community, brought nearly 5000 registered data scientists, engineers, and business leaders to San Francisco's Moscone Center to find out what’s coming next. Watch the keynote recordings today and learn more about the latest product announcements for Apache Spark,...
