topic Re: Unable to pass context variables between Parent Job and SubJob in Talend Studio

Unable to pass context variables between Parent Job and SubJob

RodBoni8587 — Fri, 15 Nov 2024 21:08:08 GMT

Hello Community,

I hope you are doing well.

I'm new to Talend and I need your help. I've been working on a Talend Job using Snowflake. Within this job, I have a sub Job that includes a tDBROW component that executes a stored procedure. This procedure expects certain context variables to be utilized in the call to the Store Proc.

This is the SubJob

The SubJob is working as expected. However, an issue arises here:

The idea is to define these variables in the tRunJob component to use them in the child Job Execution.

I have defined the context variables in the SubJob with the same names, and I'm expecting to use the values that I defined here. However, I'm encountering the following error.

When I run the SubJob independently, it works, and I get the data inserted. But if I run the parent job, things break. I wanted to know if anyone has faced this type of issue and can provide me with a hint on how to resolve it.

Thanks,

Re: Unable to pass context variables between Parent Job and SubJob

Anonymous — Mon, 08 Jan 2024 02:32:42 GMT

It is NullPointerException error, one variable is null value however it shouldn't.

In child job, print the value of these context variable before they are used to see if the values are passed correctly from parent job.

Regards

Shong

Re: Unable to pass context variables between Parent Job and SubJob

RodBoni8587 — Mon, 08 Jan 2024 02:52:29 GMT

Is there's any specific configuration I should change in order to move those context variables ?

Re: Unable to pass context variables between Parent Job and SubJob

Anonymous — Tue, 09 Jan 2024 06:44:07 GMT

I see you have checked the 'transmit whole context' box on tRunJob, so you don't need to specify these context variables in the table list.

With this option is enable, the value of context variables from patent job will be passed automatically to child job's variable which have the same name.

Re: Unable to pass context variables between Parent Job and SubJob

konvertilo — Thu, 11 Jan 2024 14:12:57 GMT

Hello,

you must ensure that the checkbox on the tRunJob to indicate you want to run the subjob in a separate VM is UNchecked. If it is checked, then the 2 differents JVM will not be able to share any values and the only way to retrieve values from the subjob is to write the context down to a file a re-read it from the master.