[Bug]: Preview output in pipelines - useless dialog and partial regression #6763
Description
Apache Hop version?
2.17.0
Java version?
Zulu17.64+17-CA (build 17.0.18+8-LTS)
Operating system
Linux
What happened?
The following dialog appears in some scenarios (*):
It doesn't add any value, since the transform to be previewed should have been already selected in a previous phase, and only this transform is listed (I can't choose another one).
In addition, sometimes (*) when previewing another transform after this, the last set of rows is not shown (possible regression, see issues #5305 and #6050)
(*) Documented reproduction path (cannot exclude other ways):
- select a transform that presumably will not receive any row to be previewed: after the message "No preview rows found", you will get the dialog above
- then select a transform that presumably will receive more than [e.g. 1000] rows, and continue to "Get more rows": you won't get the last set of rows exceeding a multple of [i.e. 1000]
Issue Priority
Priority: 2
Issue Component
Component: Hop Gui