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Pentaho Data Integration Cookbook - Second Edition - Second Edition

You're reading from  Pentaho Data Integration Cookbook - Second Edition - Second Edition

Product type Book
Published in Dec 2013
Publisher Packt
ISBN-13 9781783280674
Pages 462 pages
Edition 2nd Edition
Languages

Table of Contents (21) Chapters

Pentaho Data Integration Cookbook Second Edition
Credits
About the Author
About the Reviewers
www.PacktPub.com
Preface
1. Working with Databases 2. Reading and Writing Files 3. Working with Big Data and Cloud Sources 4. Manipulating XML Structures 5. File Management 6. Looking for Data 7. Understanding and Optimizing Data Flows 8. Executing and Re-using Jobs and Transformations 9. Integrating Kettle and the Pentaho Suite 10. Getting the Most Out of Kettle 11. Utilizing Visualization Tools in Kettle 12. Data Analytics Data Structures References Index

Generating a custom logfile


When you run a transformation or a job, all of what is happening in the process is shown in the Execution Results window, which has a tab named Logging where you can check the execution of your transformation step by step. By default, the level of the logging detail is Basic, but you can change it to show different levels of detail.

Under the Logging tab, you can see information about how the step is performing, for example, the number of rows coming from previous steps, the number of rows read, the number of rows written, errors in execution, and so on. All this data is provided by the steps automatically, but what if you want to write your custom messages to the Logging information? To do this, there is a step and an entry named Write to log, in the Utility folder.

To put them into practice, let's take a simple transformation that reads a text file with book novelties and splits them into two Excel files depending on their price. The objective here is to include...

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