I inherited some jobs that were built under version 7.5 but now we're running v8. In each job, the lookup stages do not send rejects down a reject link. Instead, a transformer stage parses the rejects after the lookup stage and sends the rejects down a link using stage variables.
Was there a bug in past versions of DataStage that prevented the lookup stage from correctly rejecting records? Is this a best practice that I should continue in new jobs or is it safe to use the built-in lookup reject functionality?
Rejects from a lookup stage
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No there isn't. In parallel jobs it's one stage, one task. That sounds like a good reason to process through a Transformer stage. Of course that Transformer stage (or a Column Generator stage) could appear on the reject link from the Lookup stage.
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Any contribution to this forum is my own opinion and does not necessarily reflect any position that IBM may hold.