[jira] [Created] (SOLR-13868) Eliminate 'Port Roulette' in Solr Testing

["Chris M. Hostetter (Jira)" <ji...@apache.org>]

Chris M. Hostetter created SOLR-13868:
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             Summary: Eliminate 'Port Roulette' in Solr Testing
                 Key: SOLR-13868
                 URL: https://issues.apache.org/jira/browse/SOLR-13868
             Project: Solr
          Issue Type: Test
      Security Level: Public (Default Security Level. Issues are Public)
            Reporter: Chris M. Hostetter


Although our testing is generally pretty good about not having hard coded ports, we still have some places in our code where we can encounter "port roulette" bugs -- expecting that a particular network port will be available to use to Bind to at some point in the test.

But instead of classic port bugs -- basing that assumption off of hardcoded ports -- the problematic portions of our test code expect that since a port *was* available to us previously (via code asking the OS to assign a port by binding to '0') it will _still_ be available to us later even if we release it.  But there is no guarantee the OS won't have already re-allocated that port to a different process/purpose.

I'm creating this issue to serve as a parent for Sub-Tasks targeting the specific instances where this problematic practice comes up.  Some of these can be solved easily, others may be more challenging.

This issue can also serve as a reference point for citating/linking from other jiras, in case there is any general discussion/concern about the overall problem, or in case new instances are discovered later.





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