Table of Contents

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  1. Preface
  2. Using Metadata Manager
  3. Configuring Metadata Manager
  4. Application Resources
  5. Business Glossary Resources
  6. Business Intelligence Resources
  7. Custom Resources
  8. Data Integration Resources
  9. Data Modeling Resources
  10. Database Management Resources
  11. Universal Resources
  12. Managing Resources
  13. Loading and Monitoring Resources
  14. Managing Permissions
  15. Resource Migration
  16. Repository Migration
  17. Appendix A: Metadata Manager Login
  18. Appendix B: Metadata Manager Properties Files
  19. Appendix C: Resource Configuration Files
  20. Appendix D: Glossary

Metadata Manager Administrator Guide

Metadata Manager Administrator Guide

Data Lineage Properties

Data Lineage Properties

The following table describes the data lineage properties in imm.properties:
Property
Description
Lineage.Debug.ShowPerformanceDebugMessages
Writes the data lineage performance information to the mm.log file.
If set to true, writes the following information to the log file:
  • Time taken to display the data lineage diagram.
  • Number of features and structures with connections in the diagram.
  • Number of objects displayed in the diagram.
Metadata Manager prefixes the name of the object for which you ran the data lineage analysis to each performance message.
Default is false.
Lineage.Flow.DefaultDownstreamGenerationLimit
Number of generations to display downstream from the source object in a data lineage diagram.
Lineage.Flow.DefaultNumberOfGenerationsToContinueLineage
Number of generations that appear when you use the arrow buttons to navigate the data lineage diagram.
Lineage.Flow.DefaultUpstreamGenerationLimit
Number of generations to display upstream from the source object in a data lineage diagram.
Lineage.PreCompute.ElementsInSingleTransaction
Maximum number of graph elements, including edges and vertices, that the Metadata Manager Service can process in a single transaction during lineage graph creation. When the number of elements reaches this limit, the Metadata Manager Service pages some information to disk instead of storing it in physical memory.
Increase this value to reduce paging for large, complex data lineage diagrams. If you increase this value, verify that the machine that stores the graph database files has enough physical memory to support the increased transaction size.
Default is 50,000.
Lineage.PreCompute.FetchBlockSize
Number of records that the Metadata Manager Service processes in one block when it retrieves data lineage linking information from the Metadata Manager warehouse to populate the graph database.
If you increase this value, you might also need to increase the value of the Lineage.PreCompute.ElementsInSingleTransaction property because each block of records will contain additional graph elements.
Default is 5000.

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