BIND 10 #2648: Statistics test leak file descriptors

[BIND 10 Development]

#2648: Statistics test leak file descriptors
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                   Reporter:         |                 Owner:
  vorner                             |                Status:  new
                       Type:         |             Milestone:  New Tasks
  defect                             |              Keywords:
                   Priority:  high   |             Sensitive:  0
                  Component:         |           Sub-Project:  Core
  statistics                         |  Estimated Difficulty:  0
               CVSS Scoring:         |           Total Hours:  0
            Defect Severity:  High   |
Feature Depending on Ticket:         |
        Add Hours to Ticket:  0      |
                  Internal?:  0      |
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 Statistics tests leak file descriptors and maybe threads.

 It seems the mock system (test_utils.py) don't terminate correctly. They
 need
 more than 128 descriptors to run, which is quite a high number. It seems
 the
 client side of the sockets (eg. in the mock boss, cfgmgr, etc) are not
 closed.

 I suspect the code around threads is strange and complicated, some of the
 threads might be leaking too (not from the `BaseModules` class, as it
 waits for
 all of them now, but maybe others).

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Ticket URL: <http://bind10.isc.org/ticket/2648>
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BIND 10 Development