Talend Data Preparation logs allows you to analyze and debug the activity of Talend Data Preparation.
Talend Data Preparation logs are located in <Data_Preparation_Path>/data/logs/app.log.
To configure the settings of your log files, edit the <Data_Preparation_Path>/config/log4j2.xml file:
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For more information on how to set the Log4j information level, see the Log4j Class documentation.
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For more information on how to set the log rotation, see Automatic Reconfiguration in the Apache documentation.