Github user mkedwards commented on the issue:
https://github.com/apache/zookeeper/pull/707
After groveling through
https://builds.apache.org/job/PreCommit-ZOOKEEPER-github-pr-build/2708/consoleText,
I think this may be a contributing factor to flaky tests:
```
[exec] [junit] 2018-11-22 00:18:30,336 [myid:] - INFO
[QuorumPeerListener:QuorumCnxManager$Listener@884] - My election bind port:
localhost/127.0.0.1:19459
[exec] [junit] 2018-11-22 00:18:30,337 [myid:] - INFO
[QuorumPeer[myid=1](plain=/127.0.0.1:19457)(secure=disabled):NettyServerCnxnFactory@493]
- binding to port localhost/127.0.0.1:19466
[exec] [junit] 2018-11-22 00:18:30,337 [myid:] - ERROR
[QuorumPeer[myid=1](plain=/127.0.0.1:19457)(secure=disabled):NettyServerCnxnFactory@497]
- Error while reconfiguring
[exec] [junit] org.jboss.netty.channel.ChannelException: Failed to
bind to: localhost/127.0.0.1:19466
[exec] [junit] at
org.jboss.netty.bootstrap.ServerBootstrap.bind(ServerBootstrap.java:272)
[exec] [junit] at
org.apache.zookeeper.server.NettyServerCnxnFactory.reconfigure(NettyServerCnxnFactory.java:494)
[exec] [junit] at
org.apache.zookeeper.server.quorum.QuorumPeer.processReconfig(QuorumPeer.java:1947)
[exec] [junit] at
org.apache.zookeeper.server.quorum.Follower.processPacket(Follower.java:154)
[exec] [junit] at
org.apache.zookeeper.server.quorum.Follower.followLeader(Follower.java:93)
[exec] [junit] at
org.apache.zookeeper.server.quorum.QuorumPeer.run(QuorumPeer.java:1263)
[exec] [junit] Caused by: java.net.BindException: Address already
in use
[exec] [junit] at sun.nio.ch.Net.bind0(Native Method)
[exec] [junit] at sun.nio.ch.Net.bind(Net.java:433)
[exec] [junit] at sun.nio.ch.Net.bind(Net.java:425)
[exec] [junit] at
sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
[exec] [junit] at
sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)
[exec] [junit] at
org.jboss.netty.channel.socket.nio.NioServerBoss$RegisterTask.run(NioServerBoss.java:193)
[exec] [junit] at
org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:391)
[exec] [junit] at
org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:315)
[exec] [junit] at
org.jboss.netty.channel.socket.nio.NioServerBoss.run(NioServerBoss.java:42)
[exec] [junit] at
org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)
[exec] [junit] at
org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)
[exec] [junit] at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[exec] [junit] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[exec] [junit] at java.lang.Thread.run(Thread.java:748)
```
---
