I have a question regarding tmap lookup models options available
Load once : It is used to load the lookup data once into the memory (regardless of main flow data volume)
Reload at each row : I have read in many blogs that it is used when the main flow has lesser data compared to lookup flow and for each and every main row the lookup is reloaded every time
But in first option(load once) even though the main flow is huge we are not reloading the lookup for every main row but in second option why do we need to reload even though if the main flow is very small?
Is my question correct? or is there misunderstanding by me?
Could anyone please help me when can i use reload at each row option and exact use of that?
Please don't send me any other links to refer as i have gone through each and every of them
Hope I get a clear understanding in this talend forum
Solved! Go to Solution.
Tag as "solved" for others! Kudos to thanks!
thanks for the reply.
so you mean to say that its used to filter the lookup data based on main flow data right?
ex : main flow have emp_id in (1,2,3,4,5)
so lookup query will be like
select * from lookup where emp_id in ("+id_from_lookup+");
for every empid from main flow the lookup will load only those specific records right?
is this correct?
Talend named a Leader.
Kickstart your first data integration and ETL projects.
Watch the recorded webinar!
Pick up some tips and tricks with Context Variables
Learn how media organizations have achieved success with Data Integration
Practical steps to developing your data integration strategy.