It seems that locks explicitly set by the application with lock(key) are not considered in case of active partition handling (the cache is in DEGRADED mode).

In that case it will be still a timeout to aquire the lock, but it would be preferable to throw an AvailabilityException immediately instead of a TimeoutException after 30 seconds.

The AvailabilityExcetpion is (only) thrown in case of put or get requests.