Quick question: I have a before update trigger on the Lead object and would like to know what happens in this scenario:

1. Bulk data import of leads (let's say 1000) cause it to fire.  It'll fire 5 times if the batch size is 200.
2. During the processing of one of the batches of 200 above, a web service pushes a Lead into the system, firing the same trigger.

Will the trigger in 2 wait for one of the batches of 200 to finish before executing or will it run while the (same) trigger in 1 is halfway through processing a batch of leads?
 

Quick question: I have a before update trigger on the Lead object and would like to know what happens in this scenario:

1. Bulk data import of leads (let's say 1000) cause it to fire.  It'll fire 5 times if the batch size is 200.
2. During the processing of one of the batches of 200 above, a web service pushes a Lead into the system, firing the same trigger.

Will the trigger in 2 wait for one of the batches of 200 to finish before executing or will it run while the (same) trigger in 1 is halfway through processing a batch of leads?