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)

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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

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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. 

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