When should I use Apache Storm instead of Apache Spark Streaming?

Real-time computation on unbounded streams with guaranteed message processing semantics. Legacy real-time processing systems built before Flink and Spark Streaming became dominant. Low-latency stream topologies (spouts and bolts) where sub-second processing is critical

When should I use Apache Spark Streaming instead of Apache Storm?

Micro-batch stream processing integrated with the Spark ecosystem using Structured Streaming API. Teams already using PySpark who want to add streaming with minimal new tooling or concepts. Combining historical batch data with real-time streams in a single unified Spark job

What are the main weaknesses of Apache Storm?

Largely superseded by Apache Flink and Spark Structured Streaming for all new projects. JVM-based; Python support via Streamparse is a second-class experience with limitations. No built-in stateful processing — managing state requires external systems like Redis or HBase

What are the main weaknesses of Apache Spark Streaming?

Micro-batch architecture introduces latency compared to true streaming engines like Flink. Legacy DStream API is deprecated; migration to Structured Streaming is required for new work. JVM overhead and cluster management complexity remain significant operational challenges

Apache Storm vs Apache Spark Streaming: Key Differences for Python Data Engineering

Stream Processing

Apache Storm

Real-Time Computation System

★ 4.4

Apache-2.0

pip install streamparse

Apache Spark Streaming

Scalable Stream Processing

★ 4.6

Apache-2.0

pip install pyspark

Side-by-Side Comparison

Apache Storm

Apache Spark Streaming

Apache Storm

Apache Spark Streaming

Best For

✓Real-time computation on unbounded streams with guaranteed message processing semantics
✓Legacy real-time processing systems built before Flink and Spark Streaming became dominant
✓Low-latency stream topologies (spouts and bolts) where sub-second processing is critical

✓Micro-batch stream processing integrated with the Spark ecosystem using Structured Streaming API
✓Teams already using PySpark who want to add streaming with minimal new tooling or concepts
✓Combining historical batch data with real-time streams in a single unified Spark job

Best For

✓Real-time computation on unbounded streams with guaranteed message processing semantics
✓Legacy real-time processing systems built before Flink and Spark Streaming became dominant
✓Low-latency stream topologies (spouts and bolts) where sub-second processing is critical

✓Micro-batch stream processing integrated with the Spark ecosystem using Structured Streaming API
✓Teams already using PySpark who want to add streaming with minimal new tooling or concepts
✓Combining historical batch data with real-time streams in a single unified Spark job

Weaknesses

•Largely superseded by Apache Flink and Spark Structured Streaming for all new projects
•JVM-based; Python support via Streamparse is a second-class experience with limitations
•No built-in stateful processing — managing state requires external systems like Redis or HBase

•Micro-batch architecture introduces latency compared to true streaming engines like Flink
•Legacy DStream API is deprecated; migration to Structured Streaming is required for new work
•JVM overhead and cluster management complexity remain significant operational challenges

Weaknesses

•Largely superseded by Apache Flink and Spark Structured Streaming for all new projects
•JVM-based; Python support via Streamparse is a second-class experience with limitations
•No built-in stateful processing — managing state requires external systems like Redis or HBase

•Micro-batch architecture introduces latency compared to true streaming engines like Flink
•Legacy DStream API is deprecated; migration to Structured Streaming is required for new work
•JVM overhead and cluster management complexity remain significant operational challenges

License

Apache-2.0

License

Apache-2.0

Install

pip install streamparse

pip install pyspark

Install

pip install streamparse

pip install pyspark

Rating

★ 4.4

★ 4.6

Rating

★ 4.4

★ 4.6

Key Features

Apache Storm

1Real-time stream processing with guaranteed message processing semantics
2Topology-based architecture defining spouts (sources) and bolts (processors)
3Horizontal scalability by adding workers to running topologies
4At-least-once and exactly-once processing guarantees via transactional topologies
5Integration with Kafka, HDFS, HBase, and other ecosystem components

Apache Spark Streaming

1Micro-batch and continuous streaming modes on the Spark engine
2Exactly-once semantics with checkpointing and write-ahead logs
3Unified API with Spark batch — same DataFrame operations on streams
4Native Kafka, Kinesis, S3, and Delta Lake source/sink support
5Watermarking for handling late-arriving data in event-time windows

How Python Data Engineers Use These Tools

Apache Storm

Python data engineers use Apache Storm via the streamparse library to write Storm topologies in Python. Storm is used for real-time event processing, fraud detection, and IoT telemetry pipelines where data must be processed and acted upon within milliseconds. While Kafka Streams and Flink have largely superseded Storm in new builds, it remains in production at organisations processing high-velocity event streams.

Apache Spark Streaming

Python data engineers use Spark Structured Streaming via PySpark to process high-volume Kafka streams at scale. A streaming job reads a Kafka topic as a DataFrame, applies transformations (filtering, aggregations, joins with static data), and writes results continuously to Delta Lake or a database — using the same PySpark syntax as batch jobs.

More Stream Processing Comparisons

Stream Processing

Apache Flink vs Apache Kafka

Stream Processing

Apache Storm vs Apache Kafka

Stream Processing

Faust vs Apache Kafka

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Apache Kafka vs Apache Spark Streaming

Stream Processing

Apache Kafka vs Redpanda

Stream Processing

Apache Samza vs Apache Kafka

Individual Tool Pages

View Apache Storm details →View Apache Spark Streaming details →

Side-by-Side Comparison

Apache Storm

Apache Spark Streaming

Apache Storm

Apache Spark Streaming

Best For

✓Real-time computation on unbounded streams with guaranteed message processing semantics
✓Legacy real-time processing systems built before Flink and Spark Streaming became dominant
✓Low-latency stream topologies (spouts and bolts) where sub-second processing is critical

✓Micro-batch stream processing integrated with the Spark ecosystem using Structured Streaming API
✓Teams already using PySpark who want to add streaming with minimal new tooling or concepts
✓Combining historical batch data with real-time streams in a single unified Spark job

Best For

✓Real-time computation on unbounded streams with guaranteed message processing semantics
✓Legacy real-time processing systems built before Flink and Spark Streaming became dominant
✓Low-latency stream topologies (spouts and bolts) where sub-second processing is critical

✓Micro-batch stream processing integrated with the Spark ecosystem using Structured Streaming API
✓Teams already using PySpark who want to add streaming with minimal new tooling or concepts
✓Combining historical batch data with real-time streams in a single unified Spark job

Weaknesses

•Largely superseded by Apache Flink and Spark Structured Streaming for all new projects
•JVM-based; Python support via Streamparse is a second-class experience with limitations
•No built-in stateful processing — managing state requires external systems like Redis or HBase

•Micro-batch architecture introduces latency compared to true streaming engines like Flink
•Legacy DStream API is deprecated; migration to Structured Streaming is required for new work
•JVM overhead and cluster management complexity remain significant operational challenges

Weaknesses

•Largely superseded by Apache Flink and Spark Structured Streaming for all new projects
•JVM-based; Python support via Streamparse is a second-class experience with limitations
•No built-in stateful processing — managing state requires external systems like Redis or HBase

•Micro-batch architecture introduces latency compared to true streaming engines like Flink
•Legacy DStream API is deprecated; migration to Structured Streaming is required for new work
•JVM overhead and cluster management complexity remain significant operational challenges

License

Apache-2.0

License

Apache-2.0

Install

pip install streamparse

pip install pyspark

Install

pip install streamparse

pip install pyspark

Rating

★ 4.4

★ 4.6

Rating

★ 4.4

★ 4.6

Key Features

Apache Storm

1Real-time stream processing with guaranteed message processing semantics
2Topology-based architecture defining spouts (sources) and bolts (processors)
3Horizontal scalability by adding workers to running topologies
4At-least-once and exactly-once processing guarantees via transactional topologies
5Integration with Kafka, HDFS, HBase, and other ecosystem components

Apache Spark Streaming

1Micro-batch and continuous streaming modes on the Spark engine
2Exactly-once semantics with checkpointing and write-ahead logs
3Unified API with Spark batch — same DataFrame operations on streams
4Native Kafka, Kinesis, S3, and Delta Lake source/sink support
5Watermarking for handling late-arriving data in event-time windows

How Python Data Engineers Use These Tools