What are the fundamental architectural, SQL compliance, and data use scenario differences between Presto and Impala?

问题

Can some experts give some succinct answers to the differences between Presto and Impala from these perspectives?

1. Fundamental architecture design
2. SQL compliance
3. Real-world latency
4. Any SPOF or fault-tolerance functionality
5. Structured and unstructured data use scenario performance

来源：https://stackoverflow.com/questions/19841027/what-are-the-fundamental-architectural-sql-compliance-and-data-use-scenario-di