Amazon Redshift, an independent review.

As on the Amazon AWS front page Amazon Redshift is a fast, fully managed, petabyte-scale data warehouse that makes it simple and cost-effective to efficiently analyze all your data using your existing business intelligence tools.

In this independent review I will set up an Amazon Redshift datawarehouse and do some basic tests to check, without going too much deep, what can be achieved with a simple Redshift installation.

Tutorial: Stress test MySQL or any other JDBC database with Yahoo Cloud Serving Benchmark (YCSB)


Yahoo Cloud Serving Benchmark (YCSB) is an Open Source tool developed by Yahoo to stress test database systems. Both SQL and NoSQL databases are supported, which makes it a good tool to stress test databases like MySQL, Oracle, MongoDb, Cassandra, etc.

XStream UnknownFieldException: Skip unmapped tags while parsing XML


By default XStream requires the developer to declare a property for each possible XML tag. For example if the XML file contains the tag X but the Java class doesn't, the parser will generate and UnknownFieldException

com.thoughtworks.xstream.converters.reflection.AbstractReflectionConverter$UnknownFieldException: No such field ...

To skip unmapped tags we can use the following code (it also works with implicit collections):

Now in London!

It has been a long time since the last post, now I'm in London working on exiting projects for very big companies!

My current project is the design and development of a visual statistical enviroment with R-Project as backend. I hope the company I'm working for will release it as an Open Source tool for complex Data Mining analysis.