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  • Common Content for Data Engineering 10.5
  • All Products

Table of Contents

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  1. Preface
  2. Mappings
  3. Mapplets
  4. Mapping Parameters
  5. Where to Assign Parameters
  6. Mapping Outputs
  7. Generate a Mapping from an SQL Query
  8. Dynamic Mappings
  9. How to Develop and Run a Dynamic Mapping
  10. Dynamic Mapping Use Cases
  11. Mapping Administration
  12. Export to PowerCenter
  13. Import From PowerCenter
  14. Performance Tuning
  15. Pushdown Optimization
  16. Partitioned Mappings
  17. Developer Tool Naming Conventions

Developer Mapping Guide

Developer Mapping Guide

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Execution Instances for Address Validator and Match Transformations

Execution Instances for Address Validator and Match Transformations

If you override the
Maximum Parallelism
 run-time property for a mapping, the Data Integration Service considers the value of the
Execution Instances
 advanced property defined for an Address Validator or Match transformation.
The Data Integration Service considers the execution instances value for the number of threads for that transformation pipeline stage as long as the transformation can be partitioned. For example, if you configure the mapping to maintain row order, the Data Integration Service might need to use one thread for the transformation.
You can increase the number of execution instances on a Match transformation when you configure the transformation for identity match analysis. You cannot increase the number of execution instances on a Match transformation when you configure the transformation for field match analysis. In field match analysis, the Match transformation uses a single execution instance.
If the
Maximum Parallelism
 run-time property for a mapping is set to Auto, the Data Integration Service ignores the execution instances value defined for an Address Validator or Match transformation.
You can configure the following values for the
Execution Instances
 advanced property for an Address Validator or Match transformation when you override the maximum parallelism for the mapping:
Execution Instances Value
Description
1
The Data Integration Service uses one thread to run the transformation.
Default for the Address Validator transformation.
Auto
The Data Integration Service considers the maximum parallelism defined for the mapping and for the Data Integration Service. The service uses the lowest value to determine the optimal number of threads that run the transformation.
Default for the Match transformation in identity match analysis.
Greater than 1
The Data Integration Service considers the execution instances defined for the transformation, the maximum parallelism defined for the mapping, and the maximum parallelism defined for the Data Integration Service. The service uses the lowest value for the number of threads that run the transformation.
The Data Integration Service also considers the Max Address Object Count property on the Content Management Service when it calculates the optimal number of threads for an Address Validator transformation. The Max Address Object Count property determines the maximum number of address validation instances that can run concurrently in a mapping. The Max Address Object Count value must be greater than or equal to the maximum parallelism value on the Data Integration Service.
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