Alluxio and Compute Answers

Which kind of EC2 instance is more recommended for use with Alluxio with applications like Presto/Spark? Does it make a big difference to have EBS disks with IOPS?

Presto and Spark are CPU-bound so they require CPU intensive instances. But on the other hand, they also need memory so the R4/R5 instances are what most users end up using for their Presto/Spark workloads. The memory itself will get distributed across Presto/Spark and Alluxio, and typically we see about 60% going to compute, 30% … Continued

Some compute frameworks like Apache Spark have single node-caching, how is Alluxio different than single-node caching?

While single node caching may be sufficient for some users, for many it does not improve the performance meaningfully. By definition, a single node cache is limited to what that single node has accessed. Also, most frameworks with a single node cache typically do not leverage the SSD or HDD in the node. Alluxio is … Continued

How do you modify location metadata in Hive?

Problem If you have hundreds of external tables defined in Hive, what is the easist way to change those references to point to new locations? That is a fairly normal challenge for those that want to integrate Alluxio into their stack. A typical setup that we will see is that users will have Spark-SQL or … Continued

How do you access AWS S3 data when running Presto in an on-premise environment?

How do we access AWS S3 data when running Presto in an on-premise environment, how can we do it efficiently to reduce both egress cost and performance runtimes? Alluxio as a local cache for Presto queries against remote AWS S3 data sources As we move toward more and more decoupled environments one of the things … Continued

How do you partition Hive Table across storage systems using Alluxio?

Today when we create a Hive table, it is a common technique to partition the table across different values and ranges to improve query performance and reduce maintenance cost. However, Hive can not access a single table directly using a single query with the data of this Hive table across different mediums of storage and … Continued

How do you run Spark on On-Premise S3?

Introducing S3 and Spark S3 has become the de-facto standard API for digital business applications to store unstructured data chunks. To this end, several vendors have S3-API compatible offerings that allow app developers to standardize on the S3 API’s on-premise, and port these apps to run on other platforms when ready. So, what is S3 and … Continued

How do you train and deploy ML models using TensorFlow and S3?

TensorFlow is an open source machine learning platform used to build applications like deep neural networks. It consists of an ecosystem of tools, libraries, and community resources for machine learning, artificial intelligence and data science applications. S3 is an object storage service that was created originally by Amazon. It has a rich set of API’s … Continued