HDFS Flat File Targets
Effective in version 10.2.2, you can append output data to HDFS target files and reject files. To append output data, choose to append data if the HDFS target exists.
To help you manage the files that contain appended data, the Data Integration Service appends the mapping execution ID to the names of the target files and reject files.
For more information, see the "Targets" chapter in the
Informatica Big Data Management 10.2.2 User Guide.