File/Hadoop CSV Input and Output Adapter

The File/Hadoop CSV Input adapter obtains CSV data from files on a local hard disk and publishes it to Event Stream Processor. The File/Hadoop CSV Output adapter reads rows from Event Stream Processor and writes this data into a specified CSV file.

Commands specified in the cnxml file for this adapter cannot contain the following strings: "mv", "rm", or "del".

These adapters can run in managed or unmanaged mode.

• Managed Mode Configuration
  To start and stop the adapter with an ESP project, attach it to a project using the ATTACH ADAPTER statement and configure its properties using the ESP Studio.
• Unmanaged Mode Configuration
  To start and stop the adapter independently of an ESP project, do not reference it in an ATTACH ADAPTER statement, and configure it independently outside of the ESP Studio.
• Starting the File/Hadoop CSV Adapter
  Start the File/Hadoop CSV adapter either in unmanaged or managed mode. In unmanaged mode, the adapter is started separately from the ESP project, and in managed mode, the adapter is started with the ESP project. In unmanaged mode, you can start the adapter from the command line or using the start command files.
• Stopping the File/Hadoop CSV Adapter
  Stop the File/Hadoop CSV adapter either in unmanaged or managed mode. In unmanaged mode, the adapter is stopped separately from the ESP project, and in managed mode, the adapter is stopped with the ESP project. Stop the adapter either from the command line or using the stop command files when running in unmanaged mode.
• Adapter Controller Parameters
  The Adapter Control port listens for commands. The controller.xml file is located in %ESP_HOME%/adapters/framework/config directory. This file is shared among all the adapters within the %ESP_HOME%/adapters/framework/instances directory.
• Logging
  The File/Hadoop CSV Input and Output adapters use the Apache log4j API to log errors, warnings, and information and debugging messages. A sample log4j.properties file containing the logging configuration is located in the %ESP_HOME%\adapters\framework\config directory.