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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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Message Processing

Message Processing

The following image shows how the Integration Service processes messages using the recovery table:
The Integration Service completes the following tasks to process messages using recovery tables:
  1. The Integration Service reads one message at a time until the flush latency is met.
  2. The Integration Service writes the message IDs, commit numbers, and the transformation states to the recovery table on the target database and writes the messages to the target simultaneously.
  3. When the target commits the messages, the Integration Service sends an acknowledgement to the real-time source to confirm that all messages were processed and written to the target.
The Integration Service continues to read messages from the source.
If the session has multiple partitions, the tasks apply to each partition.