I'm using the Docker image and I keep on getting out of memory errors due to heap space. I do hit it with about 3 images at once, but I also set it up so I have 3 replicas. It also does not appear to recover once it hits out of memory.
So far I have tried setting JAVA_OPTS=-Xmx 1768m -Xms 1768m and 2gb limit (to allow for direct memory/non-heap)
