sijie commented on a change in pull request #368: Issue 360: [documentation] 
configuration settings
URL: https://github.com/apache/bookkeeper/pull/368#discussion_r130921946
 
 

 ##########
 File path: bookkeeper-server/conf/bk_server.conf
 ##########
 @@ -40,11 +40,21 @@ bookiePort=3181
 # establish their identities as 127.0.0.1:3181, and only one will be able
 # to join the cluster. For VPSs configured like this, you should explicitly
 # set the listening interface.
-#allowLoopback=false
+# allowLoopback=false
+
+# Whether the bookie allowed to use an ephemeral port (port 0) as its server 
port.
+# By default, an ephemeral port is not allowed. Using an ephemeral port
+# as the service port usually indicates a configuration error. However, in unit
+# tests, using ephemeral port will address port conflicts problem and allow
+# running tests in parallel.
+# allowEphemeralPorts=false
 
 # Directory Bookkeeper outputs its write ahead log
 
 Review comment:
   Directory Bookkeeper outputs its write ahead log
   @deprecated since `4.5.0`. `journalDirectories` is preferred over 
`journalDirectory`.
 
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