Adding split description

Author: ealsur

articles/cosmos-db/change-feed-processor.md

@@ -73,7 +73,9 @@ As mentioned during the introduction, the change feed processor can distribute c
 
 If these three conditions apply, then the change feed processor will, using an equal distribution algorithm, distribute all the leases in the lease container across all running instances and parallelize compute. One lease can only be owned by one instance at a given time, so the maximum number of instances equals to the number of leases.
 
-The instances can grow and shrink, and the change feed processor will dynamically adjust the load by redistributing accordingly.
+The number of instances can grow and shrink, and the change feed processor will dynamically adjust the load by redistributing accordingly.
+
+Moreover, the change feed processor can dynamically adjust to container size changes. When your container grows and the cardinality of your logical partitions increases, [physical partitions](./partition-data.md#physical-partitions) can undergo a growing process known as *split* to accommodate more data. The change feed processor transparently handles these scenarios by dynamically increasing the leases and distributing the new leases among the existing instances.
 
 ## Change feed and provisioned throughput