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  1. Preface
  2. Introduction to PowerExchange for Teradata Parallel Transporter API
  3. PowerExchange for Teradata Parallel Transporter API Configuration
  4. PowerExchange for Teradata Parallel Transporter Connections
  5. PowerExchange for Teradata Parallel Transporter API Data Objects
  6. PowerExchange for Teradata Parallel Transporter API Mappings
  7. Teradata Parallel Transporter API Run-time Processing
  8. Data Type Reference

PowerExchange for Teradata Parallel Transporter API User Guide

PowerExchange for Teradata Parallel Transporter API User Guide

Configuration Parameters for Teradata Connector for Hadoop

Configuration Parameters for Teradata Connector for Hadoop

Configuration parameters determine how TDCH reads data from and writes data to Teradata.
When you run a Teradata mapping on the Hive engine, you can define the following configuration parameters in the
InfaTDCHConfig.txt
file:
libjars
Set the libjars parameter to the paths that contain the TDCH JAR files.
method
Set the method parameter to define the method that TDCH must use to write data to the Teradata database.
You can set the method to batch.insert or internal.fastload.
nummappers
Set the nummappers parameter to define the maximum number of mapper tasks that TDCH must use while writing data. You can enter an integer value that is greater than or equal to zero. If you enter zero, the number of mapper tasks will be the same as the number of file blocks in HDFS.
Use either this parameter or the numreducers parameter, but not both.
read_nummappers
Set the read_nummappers parameter to define the maximum number of mapper tasks that TDCH must use while reading data. You can enter an integer value that is greater than or equal to zero. If you enter zero, the number of mapper tasks will be the same as the number of file blocks in HDFS.
read_method
Set the read_method parameter to define the method that TDCH must use to read data from the Teradata database.
You can set the read_method parameter to one of the following values:
  • split.by.hash
  • split.by.value
  • split.by.partition
  • split.by.amp
For more information about the configuration options, see the Teradata Connector for Hadoop documentation.


Updated October 05, 2018