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[Salvatore Orlando <1486134@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Switching the gate tests to multiple workers + pymysql is triggering a lot of errors like [1] in the reservation logic.
These errors are not hitting the gate at the moment (no instance of lock wait timeout or deadlock errors emerged from logstash).

Nevertheless Rally failure rate has now jumped to 100%. This means that
the issue with the reservation logic will surely end up affecting
production environments, and is a time bomb waiting to explode in the
upstream gate.

The logic must be fixed, otherwise reverted.
Please also cut the fingers of the developer that wrote that code.

[1] http://logs.openstack.org/60/213360/4/check/gate-rally-dsvm-neutron-
neutron/4297681/logs/screen-q-svc.txt.gz?level=TRACE#_2015-08-18_10_28_01_314

** Affects: neutron
     Importance: High
     Assignee: Salvatore Orlando (salvatore-orlando)
         Status: New

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https://bugs.launchpad.net/bugs/1486134

Title:
  Reservations code triggers deadlocks and lock wait timeouts

Status in neutron:
  New

Bug description:
  Switching the gate tests to multiple workers + pymysql is triggering a lot of errors like [1] in the reservation logic.
  These errors are not hitting the gate at the moment (no instance of lock wait timeout or deadlock errors emerged from logstash).

  Nevertheless Rally failure rate has now jumped to 100%. This means
  that the issue with the reservation logic will surely end up affecting
  production environments, and is a time bomb waiting to explode in the
  upstream gate.

  The logic must be fixed, otherwise reverted.
  Please also cut the fingers of the developer that wrote that code.

  [1] http://logs.openstack.org/60/213360/4/check/gate-rally-dsvm-
  neutron-
  neutron/4297681/logs/screen-q-svc.txt.gz?level=TRACE#_2015-08-18_10_28_01_314

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