I am trying to use the FeatureJoiner to join Parcels(LEFT) to centroids(RIGHT). If I choose a LEFT as the join mode. I should the same number of parcels as the orinial input. This would include the successfully joined parcels and the parcels that had no match. My initial parcel input is 830K. My output is over 1M. Where did the extra parcels come from?
It looks to me that dupliate parcels were created. But I dont know why.
If one parcel on the left matches two records on the right (i.e. the attribute(s) you are matching on in the centroids contain duplicates), a parcel will be output for each matching centroid
@natalie_campos @ebygomm is correct. If this is a 1:M relationship between the Parcels -> Centroids you should see a duplicate parcel on output for every centroid that i joined. If that's not what you want, then try FeatureMerger with a list.