I tried to use WorkspaceRunner to perform a batch processing, but I didn't get the result I wanted.

For example, I run 4 fme.exe at the same time in child workbrench and set the output result to same location. No matter the output location is Esri Geodatabase with 4 different names or with 1 same name, sometimes one or more fme.exe fail to write the correct result, some features will be missing.

But when I set 4 different Esri Geodatabases as output locations, I can get the correct result. And this happens only when I use File Geodb Open API Writer, File Geodb didn't work either.

I'am thinking maybe FME can't write to the same GDB at same time? Is there any solution to situation? Otherwise I have to do an additional Fanout processing.

Thank you.