Through this article, we are going to complete the MapReduce job started in the [previous article](https://blog.2ndquadrant.com/en/2011/10/mapreduce-in-greenplum.html).
We have a remote datasource, served by a gpfdist server. We need to import the data in a Greenplum database, while performing some ETL manipulation during the import.
It is possible to accomplish this goal with a simple transformation in a few steps using Kettle.
Mapreduce is a very trendy software framework. It has been introduced by Google (TM) in 2004.
It is a large topic, and it is not possible to cover all of its aspetcs in a single blog article.
This is a simple introduction to the _mapreduce_ usage in Greenplum 4.1.
In this article, I am going to upgrade a Greenplum cluster from version 4.0 to 4.1 using `gpmigrator`.
`gpmigrator` is an utility shipped with Greenplum Community Edition whose purpose is to perform a live upgrade of an existing database.
The Call for Papers for the Italian PGDay has been extended of a week. The new deadline for submitting a paper is October 23.
Recently I have shown you how to perform a data import from a CSV file into a Greenplum database, using Talend Community Edition.
In this article I'm going to perform the same task using another ETL tool, Kettle.
I'm going to demonstrate how it is possible to use dblink in Greenplum 22.214.171.124
The Italian PGDay 2011 will take place in Prato, on Friday November 25th, at the Monash University Prato Centre. Exactly, where it all started.The event, organised by the Italian PostgreSQL Users Group, will be a great chance for both Italian and European members of the PostgreSQL community to gather together and to promote PostgreSQL.