The Definitive Guide to Data Quality
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I'm afraid this issue is due to your custom routine.
Click "Code" tag and check the source code of this job.
Or attach this export job and email me.
After I debug the java code in your job, I think this issue is due to sShapeFileOutput.
When you use it twice, it will duplicate variables "currentGeom", "currentGeomType".
You'd better correct this custom component.