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[Thierry Carrez <thierry.carrez+lp@xxxxxxxxx>]

** Changed in: quantum
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1158235

Title:
  configuration of QueuePool not possible

Status in OpenStack Quantum (virtual network service):
  Fix Released

Bug description:
  It's not possible to change the size and overflow parameters of the
  SQLAlchemy QueuePool. It's only possible when using the MySQL pool of
  eventlet.

  I received a lot of exceptions in the Quantum server log (using the
  OVS plugin):

  TimeoutError: QueuePool limit of size 5 overflow 10 reached,
  connection timed out, timeout 30

  After manually setting the pool_size=20 and max_overflow=50 everything
  is working fine.

  I suggest adding two new parameters: sqlalchemy_pool_size and
  sqlalchemy_max_overflow to be able to configure the QueuePool.

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