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Table of Contents

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  1. Preface
  2. Understanding Pipeline Partitioning
  3. Partition Points
  4. Partition Types
  5. Pushdown Optimization
  6. Pushdown Optimization and Transformations
  7. Real-time Processing
  8. Commit Points
  9. Row Error Logging
  10. Workflow Recovery
  11. Stopping and Aborting
  12. Concurrent Workflows
  13. Grid Processing
  14. Load Balancer
  15. Workflow Variables
  16. Parameters and Variables in Sessions
  17. Parameter Files
  18. FastExport
  19. External Loading
  20. FTP
  21. Session Caches
  22. Incremental Aggregation
  23. Session Log Interface
  24. Understanding Buffer Memory
  25. High Precision Data

Advanced Workflow Guide

Advanced Workflow Guide

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Transformation Repeatability

Transformation Repeatability

You can configure a session to resume from the last checkpoint when transformations in the session produce the same data between the session and recovery run. All transformations have properties that determine if the transformation can produce repeatable data. A transformation can produce the same data between a session and recovery run if the output is deterministic and the output is repeatable.
If you configure a transformation as repeatable and deterministic, it is your responsibility to ensure that the data is repeatable. If you try to recover a session with transformations that do not generate repeatable and deterministic data, the recovery process can result in corrupted data.