Why is AWS Athena fast?

Amazon Athena is an interactive query service that makes it easy to analyze data stored in Amazon S3 using standard SQL. Athena is serverless, so there is no infrastructure to manage, and you pay only for the queries that you run….6. Optimize ORDER BY.

Query	Run time
Speedup	98\% faster

Is Athena faster than spark?

Athena / Presto Vs Spark They can both run queries over very large datasets, both are pretty fast and both use clusters of machines. Presto is designed for low latency and uses a massively parallel processing (MPP) approach which is fast but requires everything to happen at once and in memory.

Is Amazon Athena fully managed?

Amazon Athena is an interactive query service that makes it easy to analyze data in Amazon S3 using standard SQL. Athena is serverless, so there is no infrastructure to setup or manage, and you can start analyzing data immediately.

Is Athena scalable?

Amazon Athena is designed as a scalable and extensible interactive query service. It accelerates query execution by accessing compute resources across multiple facilities. It even has the capability to route the queries automatically and appropriately when a specific facility is unavailable.

Does Athena cache query results?

Amazon Athena automatically stores query results and metadata information for each query that runs in a query result location that you can specify in Amazon S3. If necessary, you can access the files in this location to work with them.

Is Athena fast?

Athena Performance Issues Athena is a distributed query engine, which uses S3 as its underlying storage engine. Therefore its performance is strongly dependent on how data is organized in S3—if data is sorted to allow efficient metadata based filtering, it will perform fast, and if not, some queries may be very slow.

Does AWS Athena use spark?

Apache Spark makes it easy to build data lakes that are optimized for AWS Athena queries.

Does Athena support Avro?

Amazon Athena supports querying AVRO data, is available in the US East (Ohio) region and integrates with Looker. Customers can now use Amazon Athena to query data stored in Apache AVRO. AVRO is a data serialization system with support for rich data structures, schemas and binary data format.