topic Re: [resolved] globalMap Vs context in Talend Studio

[resolved] globalMap Vs context

Anonymous — Sat, 16 Nov 2024 12:46:28 GMT

Dear All,
Can anyone explain me about the difference between accessing the globalMap variables Vs context variables?
What is the main difference between these two?
Thanks in advance.
Regards,
Vijay Muthiah

Re: [resolved] globalMap Vs context

Anonymous — Thu, 28 Jul 2011 15:16:01 GMT

hi
GlobalMap variable can be used only inside the job,where as context can be used outside the job like parentjob to subjob

Re: [resolved] globalMap Vs context

alevy — Mon, 01 Aug 2011 01:24:30 GMT

Also:
context variables must be pre-defined to be used in a job, although their value can be changed during run-time. Their value can also be passed into the job as a parameter when it starts.
globalMap variables can be defined during run-time - name and value - and need not exist at all to be used (will just be treated as null). They cannot be passed into the job as a parameter when it starts.

Re: [resolved] globalMap Vs context

Anonymous — Mon, 01 Aug 2011 15:17:51 GMT

Also, the globalMap is copied around alot in the generated code. If you jam a ton of stuff in there, you will begin to notice performance problems.

Re: [resolved] globalMap Vs context

Anonymous — Tue, 02 Aug 2011 08:18:40 GMT

John,
So does that mean, using the context variables over globalMap would improve the performance..?