Delight
Stream Spark event logs to an improved UI for better monitoring and analysis.
Pricing
Free tier
Flat rate
Adoption
↘CoolingLicense
Open Source
Data freshness
Aging · Jun 8, 2026Overview
What is Delight?
Delight is a listener that streams Spark events logs to a free, enhanced Spark UI. It provides developers with more insightful visualizations and analytics compared to the default Spark UI.
Key differentiator
“Delight offers a free and enhanced UI for monitoring Spark jobs, providing more insightful visualizations compared to the default Spark UI, making it ideal for developers who need better visibility into their Spark applications.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
↓ Weaknesses
The primary language is Scala, which can be a barrier for teams with developers who are not proficient in Scala.
Setting up Delight requires detailed configuration and integration steps that may be challenging without extensive Spark experience.
Streaming event logs to the enhanced UI can introduce performance bottlenecks, especially in large-scale or high-throughput environments.
Due to its niche focus on Spark monitoring, Delight has a smaller user base and fewer third-party tools that integrate directly with it.
Fit analysis
Who is it for?
✓ Best for
Developers who need a more insightful and user-friendly UI for monitoring their Spark jobs.
Data teams looking to improve the visibility into their Spark application performance.
✕ Not a fit for
Teams needing real-time streaming capabilities beyond what is provided by Spark event logs.
Projects that require integration with non-Spark data processing frameworks.
Cost structure
Pricing
Free Tier
Available
Open source — free to use
Starts at
$0
Model
Flat rate
Enterprise
None
Performance benchmarks
How Fast Is It?
Ecosystem
Relationships
Next step
Get Started with Delight
Step-by-step setup guide with code examples and common gotchas.