[fdo][FDO311][New] Add property to schema causes excessive memory usage

[Brent Robinson]

You can view the artifact detail at the following URL:

    https://fdo.osgeo.org/servlets/Scarab/id/FDO311

Type
 Defect

Artifact ID
 FDO311 (Add property to schema causes excessive memory usage)

Reported by
 Brent Robinson
 brentrobinson (brent.robinson at autodesk.com)

New artifact details:
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- Platform set to new value
  All
- Artifact Status set to new value
  New
- Summary set to new value
  Add property to schema causes excessive memory usage
- Operating system set to new value
  All
- Priority set to new value
  P1
- Version set to new value
  V2
- Component set to new value
  SDF
- Subcomponent set to new value
  SCHEMA
- Artifact created
- Defect Severity set to new value
  Critical
- Description set to new value
  When a property is added to a feature class, that has a string property and objects, the SDF provider can used up to 1GB of memory. This can lead to crashes if the machine runs out of memory
- Steps to Reproduce set to new value
  - create an SDF file
- Add a schema to it, with one feature class
   - add at least one string property to the 
     class.
- Add some objects to the class, via FdoIInsert
- Add a property to the class and do an ApplySchema.

During the last ApplySchema, the SDF provider's memory usage will go up and down sometimes reaching as much as 1GB.

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