GitHub user fcwojtul created a discussion: Hop workflow issue: Process receives old rows instead of empty result after lookup
Hi! I’ve just switched from Pentaho and I’m having a problem with one of my workflows. I have a workflow layout like this: crts – copy rows to result grfr – get rows from result get_data1 (crts) → (grfr) process_data_1 (crts) → (grfr) get_data_2 (crts) → (grfr) process_data_2 In get_data_2 I fetch records from the previous transformation and then check their existence in the database (database lookup). The data doesn’t exist in the database, so the lookup returns no rows, and as a result no dataset is passed forward. Then process_data_2, during get rows from result, receives the same set of rows as get_data_2, instead of an empty one, so it crashes because the expected columns are missing. Is this normal behavior in Hop? In Pentaho it worked differently — it didn’t pass those rows forward. Is this an issue caused by importing Pentaho → Hop, or is this simply a behavioral difference between the two tools? GitHub link: https://github.com/apache/hop/discussions/6059 ---- This is an automatically sent email for [email protected]. To unsubscribe, please send an email to: [email protected]
