Table of Contents

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  1. Preface
  2. Transformations
  3. Source transformation
  4. Target transformation
  5. Access Policy transformation
  6. B2B transformation
  7. Aggregator transformation
  8. Cleanse transformation
  9. Data Masking transformation
  10. Data Services transformation
  11. Deduplicate transformation
  12. Expression transformation
  13. Filter transformation
  14. Hierarchy Builder transformation
  15. Hierarchy Parser transformation
  16. Hierarchy Processor transformation
  17. Input transformation
  18. Java transformation
  19. Java transformation API reference
  20. Joiner transformation
  21. Labeler transformation
  22. Lookup transformation
  23. Machine Learning transformation
  24. Mapplet transformation
  25. Normalizer transformation
  26. Output transformation
  27. Parse transformation
  28. Python transformation
  29. Rank transformation
  30. Router transformation
  31. Rule Specification transformation
  32. Sequence Generator transformation
  33. Sorter transformation
  34. SQL transformation
  35. Structure Parser transformation
  36. Transaction Control transformation
  37. Union transformation
  38. Velocity transformation
  39. Verifier transformation
  40. Web Services transformation

Transformations

Transformations

Rank caches

Rank caches

When you run a mapping that contains a Rank transformation,
Data Integration
creates data and index cache files to run the transformation. By default,
Data Integration
stores the cache files in the directory entered in the Secure Agent $PMCacheDir property for the Data Integration Server.
You can change the cache directory and cache sizes on the
Advanced
tab of the Rank transformation.
Data Integration
creates the following caches for the Rank transformation:
  • Data cache that stores row data based on the group by fields.
  • Index cache that stores group values as configured in the group by fields.
When you run a mapping that contains a Rank transformation,
Data Integration
compares an input row with rows in the data cache. If the input row out-ranks a cached row,
Data Integration
replaces the cached row with the input row. If you configure the Rank transformation to rank across multiple groups,
Data Integration
ranks incrementally for each group that it finds.
If you create multiple partitions in the Source transformation,
Data Integration
creates separate caches for each partition.

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