DCP enters deadlock, no inter/intra cluster replication from one node in a cluster

Build

4.0.0-2206

Observed the following during an xdcr test between 2 clusters:
1. While comparing standard_bucket: same size (5GB per node) on two clusters, one with value and other with full eviction, saw that
a. the bucket with value eviction had lesser resident ratio(~13%), more keys and lesser memory usage than the bucket with full eviction (see screenshot)
b. A large number of tmp OOMs were seen from the cluster with full eviction but no tmp-OOMs were seen from the other cluster(with value eviction)
c. When I further tried digging into memory usage on the bucket with full eviction, saw temp-OOMs from just one node: 172.23.105.57. The memory usage was beyond high watermark for just this node in cluster. See screenshot.
d. Active resident ratio was ~82% on this node while rest of the nodes in the cluster were around ~38%
e. The node was basically emitting tmp-OOMs to replica node, XDCR was not active either due to high memory usage of memcached. See screenshot.

Setup

C1: 8 node cluster - http://172.23.105.44:8091/index.html (live)
C2: 8 node cluster - http://172.23.105.54:8091/index.html (live) <-- contains .57