Schema Evolution in Merge Operations and Operational Metrics in Delta Lake
Try this notebook to reproduce the steps outlined below We recently announced the release of Delta Lake 0.6.0, which introduces schema evolution and performance improvements in merge and operational metrics in table history. The key features in this release are: Support for schema evolution in merge operations (#170) - You can now automatically evolve the...
Query Delta Lake Tables from Presto and Athena, Improved Operations Concurrency, and Merge performance
We are excited to announce the release of Delta Lake 0.5.0, which introduces Presto/Athena support and improved concurrency. The key features in this release are: Support for other processing engines using manifest files (#76) - You can now query Delta tables from Presto and Amazon Athena using manifest files, which you can generate using Scala,...
Simple, Reliable Upserts and Deletes on Delta Lake Tables using Python APIs
We are excited to announce the release of Delta Lake 0.4.0 which introduces Python APIs for manipulating and managing data in Delta tables. The key features in this release are: Python APIs for DML and utility operations (#89) - You can now use Python APIs to update/delete/merge data in Delta Lake tables and to run...
Announcing the Delta Lake 0.3.0 Release
We are excited to announce the release of Delta Lake 0.3.0 which introduces new programmatic APIs for manipulating and managing data in Delta tables. The key features in this release are: Scala/Java APIs for DML commands - You can now modify data in Delta tables using programmatic APIs for Delete (#44), Update (#43) and Merge...
Efficient Upserts into Data Lakes with Databricks Delta
Simplify building big data pipelines for change data capture (CDC) and GDPR use cases. Databricks Delta, the next-generation engine built on top of Apache Spark™, now supports the MERGE command, which allows you to efficiently upsert and delete records in your data lakes. MERGE dramatically simplifies how a number of common data pipelines can be...
Introducing Databricks Optimized Autoscaling on Apache Spark™
Databricks is thrilled to announce our new optimized autoscaling feature. The new Apache Spark™-aware resource manager leverages Spark shuffle and executor statistics to resize a cluster intelligently, improving resource utilization. When we tested long-running big data workloads, we observed cloud cost savings of up to 30%. What’s the problem with current state-of-the-art autoscaling approaches? Today,...
Introducing Low-latency Continuous Processing Mode in Structured Streaming in Apache Spark 2.3
Structured Streaming in Apache Spark 2.0 decoupled micro-batch processing from its high-level APIs for a couple of reasons. First, it made developer’s experience with the APIs simpler: the APIs did not have to account for micro-batches. Second, it allowed developers to treat a stream as an infinite table to which they could issue queries as...
Introducing Stream-Stream Joins in Apache Spark 2.3
Since we introduced Structured Streaming in Apache Spark 2.0, it has supported joins (inner join and some type of outer joins) between a streaming and a static DataFrame/Dataset. With the release of Apache Spark 2.3.0, now available in Databricks Runtime 4.0 as part of Databricks Unified Analytics Platform, we now support stream-stream joins. In this...
Do your Streaming ETL at Scale with Apache Spark’s Structured Streaming
At the Spark Summit in San Francisco in June, we announced that Apache Spark’s Structured Streaming is marked as production-ready and shared benchmarks to demonstrate its performance compared to other streaming engines. Structured Streaming is a novel way to process streams. Not only does this new way make it easy to build end-to-end streaming applications,...
Event-time Aggregation and Watermarking in Apache Spark’s Structured Streaming
This is the fourth post in a multi-part series about how you can perform complex streaming analytics using Apache Spark. Continuous applications often require near real-time decisions on real-time aggregated statistics—such as health of and readings from IoT devices or detecting anomalous behavior. In this blog, we will explore how easily streaming aggregations can be...
