I've finally found the problem causing the delta-import to fail and thought I would post it here for future reference (if someone makes the same mistake I did).
I had forgot to collect the "id" column in the deltaImportQuery. I should, of course, have known this from the log entires about documents not being added because they lacked "id" fields. My broken query: SELECT column_1, column_2, column_3 FROM table WHERE id = ${dataimporter.delta.id} My working query: SELECT id, column_1, column_2, column_3 FROM table WHERE id = ${dataimporter.delta.id} Thanks all for you help! -- View this message in context: http://lucene.472066.n3.nabble.com/dataimport-properties-is-not-updated-on-delta-import-tp916753p933342.html Sent from the Solr - User mailing list archive at Nabble.com.