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From "Ufuk Celebi (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-3451) NettyServer port is determined via NetUtils.getAvailablePort()
Date Fri, 19 Feb 2016 14:11:18 GMT
Ufuk Celebi created FLINK-3451:
----------------------------------

             Summary: NettyServer port is determined via NetUtils.getAvailablePort()
                 Key: FLINK-3451
                 URL: https://issues.apache.org/jira/browse/FLINK-3451
             Project: Flink
          Issue Type: Bug
          Components: Distributed Runtime
            Reporter: Ufuk Celebi
            Assignee: Ufuk Celebi


During start up, the {{NettyServer}} port is configured via {{NetUtils.getAvailablePort()}}.
In most cases, this works as expected, but it is possible that another service grabs the port
while it is available (between the check and {{NettyServer}} initialization).

It is more robust to let {{NettyServer}} pick the port itself no port is specified.

In general the {{getAvailablePort-then-setConfig}} pattern is not recommended.




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