Hey Guys,Today I am going to post a doubt to discuss. I have faced this question a number of time and i don’t find me giving a very satisfactory answer.
Question is :-
What is the difference/similarities between IS Trigger processing
- If mode is set to serial
- Or if mode is set to Concurrent but with Maximum Thread set to 1.
Something which i found out is if we have concurrent with max thread as 1, then this will indicate to Broker that it can hand out documents to multiple IS instances at the same time without any document order maintained.Please post your thoughts in comment section.
Happy Learning 🙂
Comments from shashank patel – He explained difference with situation.
Situation: Clustered environment with 2 ISs and a trigger on both IS. This Cluster will have a client on Broker.
If a trigger is set to Serial – then, only 1 document is processed at a time. Either of IS can pull document from Client queue to its Trigger queue. But, never both.
If a trigger is set to Concurrent – and max Threads =1 ; Then, both ISs can pull 1 document each at the same time from Client Queue towards their respective Trigger queues.
I concur. We’ve observed this difference at a customer both Shashank & I worked together at.
I think on the backend implementation “serial” corresponds to a Queue whereas “concurrent” corresponds to a Topic, for the trigger client queues created.
you can say that broadly. but underlying it is complex. you can have a concurrent trigger on queue and serial on topic.