Parallel Stage which supports both Input and output links?

rockr · Post by **rockr** » Wed Feb 13, 2008 12:55 pm

Is there a parallel stage which supports both input and output links with the same metadata?

Like SEQUENTIAL FILE in SERVER ?

ArndW · Post by **ArndW** » Wed Feb 13, 2008 1:23 pm

Yes, many active stages like the transform and copy stages support both input and output links. The passive stage functionality you are referring to with server jobs does not exist in Parallel jobs. The "other" link in these stages is, where allowed, always a reject link in PX jobs.

ray.wurlod · Post by **ray.wurlod** » Wed Feb 13, 2008 3:48 pm

The reason is that that would be a "blocking operation" - a passive stage can not open its output(s) until its input has closed. Blocking operations interfere with (prevent) pipeline parallelism and are therefore banned.

chulett · Post by **chulett** » Wed Feb 13, 2008 5:49 pm

In other words, you can't do a direct equivalent of your Server job in PX so I assume you'll need to break it up into two discrete jobs.