Hadoop and ETL

My last post (here) blathered about the effect that Hadoop must have on database vendor profits. An associate wrote me with the reminder that Hadoop is also impacting revenues and profits of ETL companies. If you think about Hadoop as both an inexpensive staging area for an EDW and as a parallel compute engine that can…

An Elastic Shared-Nothing Architecture

In this post we will consider again the implications of implementing a shared-nothing architecture in the cloud. That is, we will start wondering about how to extend a static shared-nothing cluster deployed into an elastic hardware environment. This is the first of three posts inspired by a series of conversations with the folks at Bityota (Bityota.com). After…

How DBMS Vendors Admit to an Architectural Limitation: Part 2 – Teradata Intelligent Memory

This is the second post (see Part 1 here) on how vendors adjust their architecture without admitting that the previous architecture was flawed. This time we’ll consider Teradata and in-memory…. When SAP HANA appeared Teradata went on the warpath with a series of posts and statements that were pointed but oddly miscued (see the references below).…