Feeds

Gurus answer MapReduce young turks

Database blues and grays

Intelligent flash storage arrays

The two database gurus whose blog produced a storm of protest over their criticism of Google's MapReduce technology last month have hit back with a robust defense.

In their latest joint posting Michael Stonebraker and David DeWitt have respond to four specific issues raised by their critics: that MapReduce is not a database and, therefore, should not be judged as such, that MapReduce is scalable, that MapReduce is cheap, and - finally - that the two are merely "the old guard" defending traditional database management (DBMS) technology.

They claim that the original critique never said that MapReduce is a database - only that it is capable of performing some of the same tasks - specifically the analysis of large datasets. It is, therefore, legitimate to make the comparison between the two and conclude that "most things that are possible in MapReduce are also possible in a SQL engine".

On the scalability of MapReduce, Stonebraker and DeWitt note that the jury is still out on this and "as far as we are aware there are no published papers that study the scalability of MapReduce in a controlled scientific fashion". They also dismiss the claim that DBMS is expensive compared to MapReduce - pointing out open source alternatives to expensive commercial products.

Finally, they admit to being "gray beards" who "have seen a lot of ideas come and go" but add that gray beards and young turks should not be adversaries.

The initial response to Stonebraker and DeWitt's defense indicates that the argument looks set to continue. While a few commenters have reacted positively, the majority remain unconvinced.®

Choosing a cloud hosting partner with confidence

Whitepapers

Choosing cloud Backup services
Demystify how you can address your data protection needs in your small- to medium-sized business and select the best online backup service to meet your needs.
Getting started with customer-focused identity management
Learn why identity is a fundamental requirement to digital growth, and how without it there is no way to identify and engage customers in a meaningful way.
High Performance for All
While HPC is not new, it has traditionally been seen as a specialist area – is it now geared up to meet more mainstream requirements?
Choosing a cloud hosting partner with confidence
Download Choosing a Cloud Hosting Provider with Confidence to learn more about cloud computing - the new opportunities and new security challenges.
Storage capacity and performance optimization at Mizuno USA
Mizuno USA turn to Tegile storage technology to solve both their SAN and backup issues.