Memory leaks in KV get operation

We have problem in our applications with memory consumption after upgrade to python client SDK version 3.2.*. Simple get operation in a while iteration is consuming more and more memory.

Example code:

from couchbase.cluster import Cluster, ClusterOptions
from couchbase.auth import PasswordAuthenticator
cluster = Cluster('couchbase://some-cluster?enable_tracing=false', ClusterOptions(PasswordAuthenticator('xxx', 'xxx')))

cb = cluster.bucket('xxx')
cb_coll_default = cb.default_collection()
cb_coll_default.upsert(str(123), '123')
for i in range(10000000):
try:
cb_coll_default.get(str(123))
except Exception:
pass