The FeatureReader has the option to read "Schema and Data Features", "Data Featues" and "Schema Features".
In an attempt to optimize a process which converts a bunch of AutoDesk dwg's I tried to first read only the schema (the layers), determine which of the layers need to be read and feed that list in a second FeatureReader as Feature Types to Read.
I found out I was getting slower performance, due to the FeatureReader being really slow to read the Schema Features.
- Reading SchemaFeatures from the dwg took 120 seconds.
- Reading Data Features from the dwg took 2 seconds.
Reading from an empty file did not result in a different performance.
- Why is this so slow? Does it have anything to do with the parameters?
- I think the FeatureReaders FME Defaults should be "Data Features" as a lot of users would benefit from the increased performance.
