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[OpenStack Infra <1825961@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.opendev.org/653675
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=36515b38b2ab990aa16e14e9a410b710df661652
Submitter: Zuul
Branch:    master

commit 36515b38b2ab990aa16e14e9a410b710df661652
Author: Pavlo Shchelokovskyy <shchelokovskyy@xxxxxxxxx>
Date:   Thu Apr 18 10:08:44 2019 +0300

    Do not try to access sets by index
    
    code in neutron api in some circumstances tries to access
    a set or a frozenset by index, which does not work.
    In particular it may manifest as
    
    Unable to connect to Neutron: 'frozenset' object has
    no attribute '__getitem__'
    
    error in the horizon.log when opening an empty instances list page.
    
    Convert to list instead, and skip conversion for `collections.Sequence`
    objects only that support all the methods used for this object
    further in this method.
    
    Closes-bug: #1825961
    Change-Id: I141a28d96f71c06a1ebe44d7067ccf4609e22db6


** Changed in: horizon
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1825961

Title:
  Horizon displays an error message on an empty instances list page

Status in OpenStack Dashboard (Horizon):
  Fix Released

Bug description:
  The following error is observed in the Horizon log:
  Unable to connect to Neutron: 'frozenset' object has no attribute '_getitem_'

  The error happens on the network_list requests when the parameter list
  is too long.

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