Table of Contents

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  1. Preface
  2. Transformations
  3. Source transformation
  4. Target transformation
  5. Access Policy transformation
  6. Aggregator transformation
  7. B2B transformation
  8. Chunking transformation
  9. Cleanse transformation
  10. Data Masking transformation
  11. Data Services transformation
  12. Deduplicate transformation
  13. Expression transformation
  14. Filter transformation
  15. Hierarchy Builder transformation
  16. Hierarchy Parser transformation
  17. Hierarchy Processor transformation
  18. Input transformation
  19. Java transformation
  20. Java transformation API reference
  21. Joiner transformation
  22. Labeler transformation
  23. Lookup transformation
  24. Machine Learning transformation
  25. Mapplet transformation
  26. Normalizer transformation
  27. Output transformation
  28. Parse transformation
  29. Python transformation
  30. Rank transformation
  31. Router transformation
  32. Rule Specification transformation
  33. Sequence transformation
  34. Sorter transformation
  35. SQL transformation
  36. Structure Parser transformation
  37. Transaction Control transformation
  38. Union transformation
  39. Vector Embedding transformation
  40. Velocity transformation
  41. Verifier transformation
  42. 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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