To read text files in parallel, specify the following input format in the complex file read properties:

com.informatica.adapter.hdfs.hadoop.io.InfaTextInputFormat

You can also specify the following input format to read text files in batches:

com.informatica.adapter.hdfs.hadoop.io.InfaBatchTextInputFormat

Typically, when you read complex files, the Data Processor transformation has a Streamer component and a Parser component. By default, the Data Integration Service calls the Data Transformation Engine for every record. You can modify this behavior by using the count property in the Streamer component. Set the count property to define the number of records that the Data Integration Service must treat as a batch. When you set the count property, the Data Integration Service calls the Data Transformation Engine for each batch of records instead of calling the Data Transformation Engine for every record. Since the Data Integration Service processes the text files in batches, the performance increases.