topic Re: OnSubJobOk vs OnComponentOk!!! in Talend Studio

OnSubJobOk vs OnComponentOk!!!

ankit7359 — Wed, 26 Dec 2018 07:43:49 GMT

Hi All,

Merry Christmas,

Well i was wondering about the triggers in talend and those were OnSubjobOk and OnComponentOk which troubled me and my query on this is -> when OnSubjobOk on initial component(Starting component) and OnComponentOk is placed on last component... will they produce the same behavior???

OnSubJobOK and OnComponentOk(placed on last component of the Job or the Target component of the sub-job).

Pls let me know your opinions on this..

Thanks,

Ankit

Re: OnSubJobOk vs OnComponentOk!!!

Anonymous — Wed, 26 Dec 2018 09:09:11 GMT

hello Ankit,

OnSubjobOK and OnComponentOK are trigger links, which can link to another subjob. The main difference between them lies in the execution order of the linked subjob.

With OnSubjobOK, the linked subjob starts only when the previous subjob completely finishes.
With OnComponentOK, the linked subjob starts when the previous component finishes.

What is a subjob?

A subjob is a self-contained subset of a larger Job, composed of components and links.

The following diagram shows a Job with three subjobs:

The execution order of subjobs linked by OnComponentOK is within the execution cycle of the previous subjob. In this example, subjob 2 starts when tLogRow_1finishes; subjob 3 starts when both subjob 1 and subjob 2 end, because subjob 2 runs within the execution cycle of subjob 1.

Only the first component of a subjob can use the OnSubjobOK link.

Re: OnSubJobOk vs OnComponentOk!!!

ankit7359 — Wed, 26 Dec 2018 09:31:59 GMT

Thanks for the quick reply!!!
But i was presumably asking for the behavior of the component like when onSubjobOk is used then we have to wait until the whole subjob completes on the other hand when it is connected on OnComponentOk at the last component of the subjob does it exhibit OnSubJobOk behavior ????
Thanks,
Ankit

Re: OnSubJobOk vs OnComponentOk!!!

Anonymous — Wed, 26 Dec 2018 10:01:54 GMT

Hi Ankit,

Even if you are adding On Component Ok at the last part, its behavior is totally dependent on the predessor component.

For example, in the below job, I am creating a sequence from 1 to 5 and printing them in iteration. On Component Ok is executed 5 times here but On SubJob OK is executed only once.

Hope I have answered your query 🙂

Warm Regards,
Nikhil Thampi

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Re: OnSubJobOk vs OnComponentOk!!!

Anonymous — Wed, 26 Dec 2018 10:11:16 GMT

Hi,

OnSubjobOK – It was available on the first component of Job and you can link to sub job when Job is a success.
OnComponentOK - It is available in hole jobs and you can link to the subject when component success.

Regards,

Avinash Pentyala