Thursday night during the meetup at Facebook someone was asking about java11 and 3.5/master. I dug in a bit. Looks like master hasn't been passing for some time, https://builds.apache.org/view/S-Z/view/ZooKeeper/job/ZooKeeper-trunk-java11/
I just added a java11 job for 3.5 to jenkins, it is displaying the same issue. I noticed this issue https://issues.apache.org/jira/browse/ZOOKEEPER-1441 which looks similar. I updated the jira with some comments, please take a look as it would be good to get Java11 passing on 3.5/master. Based on what I've seen so far it may be a real issue with java11. I turned test.junit.threads=1 for the job and it's still happening. As such there seems to be some issue with port assignment, or perhaps (see the logs I added to that jira) it may be related to not closing the socket properly with Java 11. Thanks, Patrick
