Part 8 – How Hadooped is SQL Server PDW with Polybase?

Now for SQL Server… continuing the thread on RDBMS-Hadoop integration (Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7) 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…

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…

HANA, BLU, Hekaton, and Oracle 12c vs. Teradata and Greenplum – November 2013

I would like to point out a very important section in the paper on Hekaton on the Microsoft Research site here. I will quote the section in total: 2. DESIGN CONSIDERATIONS  An analysis done early on in the project drove home the fact that a 10-100X throughput improvement cannot be achieved by optimizing existing SQL…

BLU Meanies: Data In-memory

IBM is presenting a DB2 Tech Talk that compares the BLU Accelerator to HANA. There are several mistakes and some odd thinking in the pitch so let me address the issues as a way to explain some things about HANA and about BLU. This blog will consider what data needs to be in-memory. IBM like…

IBM BLU and SAP HANA

As I noted here, I think that the IBM BLU Accelerator is a very nice piece of work. Readers of this blog are in the software business where any feature developed by any vendor can be developed in a relatively short period of time by any other vendor… and BLU certainly moves DB2 forward in…

HANA Memory Utilization

The current release of HANA requires that all of the data required to satisfy a query be in-memory to run the query. Let’s think about what this means: HANA compresses tables into bitmap vectors… and then compresses the vectors on write to reduce disk I/O. Disk I/O with HANA? Yup. Once this formatting is complete…