What are some alternatives?
When comparing Hadoop HDFS and Impala, you can also consider the following products
Google Cloud Dataflow - Google Cloud Dataflow is a fully-managed cloud service and programming model for batch and streaming big data processing.
RJ Metrics - RJMetrics provides hosted business intelligence & data analysis software to companies that operate online.
Amazon EMR - Amazon Elastic MapReduce is a web service that makes it easy to quickly process vast amounts of data.
Google BigQuery - A fully managed data warehouse for large-scale data analytics.
BlueData - BlueData's software platform makes it easier, faster and more cost-effective for organizations to deploy Big Data infrastructure on-premises.
Qubole - Qubole delivers a self-service platform for big aata analytics built on Amazon, Microsoft and Google Clouds.