[jira] [Created] (STORM-2886) Look into better phemeral port support in LocalCluster.withNimbusDaemon

["Robert Joseph Evans (JIRA)" <ji...@apache.org>]

Robert Joseph Evans created STORM-2886:
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             Summary: Look into better phemeral port support in LocalCluster.withNimbusDaemon
                 Key: STORM-2886
                 URL: https://issues.apache.org/jira/browse/STORM-2886
             Project: Apache Storm
          Issue Type: Improvement
          Components: storm-server
    Affects Versions: 1.0.0, 2.0.0
            Reporter: Robert Joseph Evans


We have a few tests that use a LocalCluster and then launch an actual Nimbus Thrift Server instance.  This is mostly to test that the thrift code works properly.

In some cases this can cause issues because by default it is going to get a single hard coded port.

In most cases we work around this, like in STORM-2885 by finding a free port and then using that for both client and server configs.

This does not eliminate the race, but it makes it very unlikely.  It would be great if we could eliminate the race by somehow bringing up the thrift server on an ephemeral port, and then providing a way to get that port through an API in LocalCluster.

One of the issues we would have to overcome is that we explicitly check for positive port numbers, and we would only want to turn that off for this particular use case.



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