Getting unique RowdID while using Parallel Chunks start and Nested Loop

[dmuphin]

Hi all,

this is an issue in my workflows. I often read 24 hourly files of GPS logs to create a file for the full day.

I would like to do that in a parallel chunk loop, as the files are Huge. What I do first, is list the 24 files, open a Parallel chunk start, and then I use the Table Row to variable loop Start loop, which results in only 4 files per Processor core.

Now the inner Loop generates a Unique RowID by append a suffix. Which is unfortunately not unique, because ever nested loop starts counting at zero, adding the suffix. Which results in an error in the Parallel Chunk End:

ERROR Parallel Chunk End 3:45 Execute failed: Encountered duplicate row ID “Row0”

Are there any tricks, rather than generating my own RowIDs per loop, and use the RowID node?

Thanks!

[Iris]

In the dialog of the parallel loop end there is an option to uniquify the row ids.

[dmuphin]

Didn’t see that, thanks!