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Apache Spark vs Kylo: What are the differences?
# Apache Spark vs Kylo
Apache Spark and Kylo are both popular big data processing tools, but they have distinct differences that set them apart. Below are the key differences between Apache Spark and Kylo:
1. **Processing Engine**: Apache Spark is a distributed computing system that provides in-memory processing for faster data analysis, while Kylo is a data lake management platform that focuses on simplifying and automating data ingestion, curation, and provisioning.
2. **Use Case Focus**: Apache Spark is best suited for data processing and analytics tasks where speed and performance are crucial, making it ideal for real-time data processing and machine learning applications. Kylo, on the other hand, is designed for managing data lakes and enabling data engineers to efficiently discover, ingest, and curate data for downstream processing.
3. **Scalability**: Apache Spark is known for its scalability, allowing users to seamlessly scale up or down based on the workload requirements. Kylo, although designed for enterprise-scale data lake management, may have limitations in terms of scalability compared to Apache Spark.
4. **Development Flexibility**: Apache Spark provides a rich set of APIs in multiple programming languages like Scala, Java, and Python, offering developers flexibility in writing data processing applications. Kylo, while offering a GUI-driven approach to data ingestion and management, may have fewer options for custom development compared to Apache Spark.
5. **Community and Ecosystem**: Apache Spark has a large and active open-source community with extensive documentation, tutorials, and third-party integrations, making it easier for users to find support and resources. Although Kylo also has a community around it, the ecosystem and community support for Kylo may not be as robust as that of Apache Spark.
6. **Integration with Other Technologies**: Apache Spark is well-integrated with a wide range of big data technologies like Hadoop, Kafka, and Cassandra, making it easier to build end-to-end data pipelines. Kylo, while offering integration with various data sources and processing frameworks, may not have the same level of seamless integration as Apache Spark.
In Summary, Apache Spark excels in processing speed, flexibility, and scalability for data analytics tasks, while Kylo specializes in simplifying data lake management and data ingestion processes for data engineering workflows.
We have a Kafka topic having events of type A and type B. We need to perform an inner join on both type of events using some common field (primary-key). The joined events to be inserted in Elasticsearch.
In usual cases, type A and type B events (with same key) observed to be close upto 15 minutes. But in some cases they may be far from each other, lets say 6 hours. Sometimes event of either of the types never come.
In all cases, we should be able to find joined events instantly after they are joined and not-joined events within 15 minutes.
The first solution that came to me is to use upsert to update ElasticSearch:
- Use the primary-key as ES document id
- Upsert the records to ES as soon as you receive them. As you are using upsert, the 2nd record of the same primary-key will not overwrite the 1st one, but will be merged with it.
Cons: The load on ES will be higher, due to upsert.
To use Flink:
- Create a KeyedDataStream by the primary-key
- In the ProcessFunction, save the first record in a State. At the same time, create a Timer for 15 minutes in the future
- When the 2nd record comes, read the 1st record from the State, merge those two, and send out the result, and clear the State and the Timer if it has not fired
- When the Timer fires, read the 1st record from the State and send out as the output record.
- Have a 2nd Timer of 6 hours (or more) if you are not using Windowing to clean up the State
Pro: if you have already having Flink ingesting this stream. Otherwise, I would just go with the 1st solution.
Please refer "Structured Streaming" feature of Spark. Refer "Stream - Stream Join" at https://spark.apache.org/docs/latest/structured-streaming-programming-guide.html#stream-stream-joins . In short you need to specify "Define watermark delays on both inputs" and "Define a constraint on time across the two inputs"
Pros of Kylo
Pros of Apache Spark
- Open-source61
- Fast and Flexible48
- One platform for every big data problem8
- Great for distributed SQL like applications8
- Easy to install and to use6
- Works well for most Datascience usecases3
- Interactive Query2
- Machine learning libratimery, Streaming in real2
- In memory Computation2
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Cons of Kylo
Cons of Apache Spark
- Speed4