Part 7 – How Hadooped is Greenplum, the Pivotal GPDB?

Now for Greenplum & Hadoop… to continue this thread on RDBMS-Hadoop integration (Part 1, Part 2, Part 3, Part 4, Part 5, Part 6) I have suggested that we could evaluate integration architecture using three criteria: How parallel are the pipes to move data between the RDBMS and the parallel file system; Is there intelligence to push down predicates; and Is there…

Part 6: How Hadooped is HANA?

Now for HANA plus Hadoop… to continue this thread on RDBMS-Hadoop integration (Part 1, Part 2, Part 3, Part 4, Part 5) I have suggested that we could evaluate integration architecture using three criteria: How parallel are the pipes to move data between the RDBMS and the parallel file system; Is there intelligence to push…

Part 5: A Review of Processing Push-down

Continuing this thread on RDBMS-Hadoop integration (Part 1, Part 2, Part 3, Part 4) I have suggested that we could evaluate integration architecture using three criteria: How parallel are the pipes to move data between the RDBMS and the parallel file system; Is there intelligence to push down predicates; and Is there more intelligence to…

Part 1: How Hadooped is Your RDBMS?

Sorry for the comic adjective “Hadooped”? The next few blogs will try to evaluate the different approaches to integrating Hadoop and a standard RDBMS… so the first thing I’ll try in this post is to suggest a criteria based on some architectural  choices for making the evaluation. Further, I’ll inject a little surprise and make…

Specialized Databases vs. Swiss Army Knives

Michael Stonbreaker has suggested several times… and again in this interview… that  databases will become more specialized and that “one size will fit none”. I’m sure that his argument is more nuanced than the sound bites in the interview, but in this post I’ll suggest a line of thinking that may lead to a different conclusion.…

Who Out-performs Who: A Story…

In this blog I have stated explicitly and implied now and again that the big architectural features are what count… despite the fact that little features are often what are marketed. Here is a true story to reinforce this theme… and a reminder of the implications… a real-life battle between two vendors: we’ll call them…

Chuck McDevitt: An Obituary

My friend and a major contributor to the art of database architecture, Chuck McDevitt, died last week. Five years ago Chuck was diagnosed with an advanced cancer and given six months to live. He fought and endured and worked for most of those five years, teaching us all a little about how we might live…