Workload management

Discussion of workload management technology, typically in analytic or mixed-workload DBMS.

February 6, 2013

Key questions when selecting an analytic RDBMS

I recently complained that the Gartner Magic Quadrant for Data Warehouse DBMS conflates many use cases into one set of rankings. So perhaps now would be a good time to offer some thoughts on how to tell use cases apart. Assuming you know that you really want to manage your analytic database with a relational DBMS, the first questions you ask yourself could be:

Let’s drill down. Read more

July 28, 2012

Some Vertica 6 features

Vertica 6 was recently announced, and so it seemed like a good time to catch up on Vertica features. The main topics I want to address are:

Also:

In general, the main themes of Vertica 6 appear to be:

Let’s do the analytic functionality first. Notes on that include:

I’ll also take this opportunity to expand on something I wrote about a few vendors — including Vertica — at the end of my post on approximate query results. When I probed how customers of Vertica and other RDBMS-based analytic platform vendors used vendor-proprietary advanced analytic SQL and other analytic capabilities, answers included: Read more

July 23, 2012

Hadoop YARN — beyond MapReduce

A lot of confusion seems to have built around the facts:

Here’s my best effort to make sense of all that, helped by a number of conversations with various Hadoop companies, but most importantly a chat Friday with Arun Murthy and other Hortonworks folks.

Read more

April 4, 2012

IBM DB2 10

Shortly before Tuesday’s launch of DB2 10, IBM’s Conor O’Mahony checked in for a relatively non-technical briefing.* More precisely, this is about DB2 for “distributed” systems, aka LUW (Linux/Unix/Windows); some of the features have already been in the mainframe version of DB2 for a while. IBM is graciously permitting me to post the associated DB2 10 announcement slide deck.

*I hope any errors in interpretation are minor.

Major aspects of DB2 10 include new or improved capabilities in the areas of:

Of course, there are various other enhancements too, including to security (fine-grained access control), Oracle compatibility, and DB2 pureScale. Everything except the pureScale part is also reflected in IBM InfoSphere Warehouse, which is a near-superset of DB2.*

*Also, the data ingest part isn’t in base DB2.

Read more

March 16, 2012

Juggling analytic databases

I’d like to survey a few related ideas:

Here goes. Read more

November 12, 2011

Clarifying SAND’s customer metrics, positioning and technical story

Talking with my clients at SAND can be confusing. That said:

A few months ago, I wrote:

SAND Technology reported >600 total customers, including >100 direct.

Upon talking with the company, I need to revise that figure downward, from > 600 to 15.

Read more

November 12, 2011

Exasol update

I last wrote about Exasol in 2008. After talking with the team Friday, I’m fixing that now. :) The general theme was as you’d expect: Since last we talked, Exasol has added some new management, put some effort into sales and marketing, got some customers, kept enhancing the product and so on.

Top-level points included:

Read more

November 8, 2011

Hadapt is moving forward

I’ve talked with my clients at Hadapt a couple of times recently. News highlights include:

The Hadapt product story hasn’t changed significantly from what it was before. Specific points I can add include:   Read more

November 3, 2011

MarkLogic’s Hadoop connector

It’s time to circle back to a subject I skipped when I otherwise wrote about MarkLogic 5: MarkLogic’s new Hadoop connector.

Most of what’s confusing about the MarkLogic Hadoop Connector lies in two pairs of options it presents you:

Otherwise, the whole thing is just what you would think:

MarkLogic said that it wrote this Hadoop connector itself.

Read more

September 25, 2011

Workload management and RAM

Closing out my recent round of Teradata-related posts, here’s a little anomaly:

Read more

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