It looks like if you are only changing Environment Variables, then it appears the only choice is to choose a Compute Mode = Exception. Please confirm...

Hi Anne

Yes, and No.

If you want to use a compute node, then yes, that is what you need to do.

But, if you only want to update something in the environment then you can use one of the other nodes that takes ESQL code, like the Filter node or the Database node. 

I've done some performance tests on a very basic simple flow.  I've found on my laptop the following TPS: 

• Compute Node with mode set to exception:   about 56 000 transactions per second
• Filter node:                                                      about 72 600 transactions per second
• Database node                                                 about 76 800 transactions per second

So, for updating only the environment it might be better to use a database node. Strange but true.

Thanks Francois!

I usually use a Filter node if I'm just changing the Environment,  People unfamiliar with this technique will argue against it but now I see it is faster than a Compute node.  This is good stuff.

Scott