Can not delete the stack: TypeError: 'NoneType' object has no attribute '__getitem__'

[huangtianhua]

convergence_engine = false

1. create a stack with the snippet:
******************
resources:
  th_server:
    type: OS::Nova::Server
    properties:
      name: si_ser
      flavor: {get_param: flavor}
      image: {get_param: image}
      networks:
        - port: {get_resource: port}
      tags:
        - t1
  port:
    type: OS::Neutron::Port
    properties:
      network: private
********************
2. snapshot for the stack
3. update the stack to add a external server resource:
**************
resources:
  th_server:
    type: OS::Nova::Server
    properties:
      name: si_ser
      flavor: {get_param: flavor}
      image: {get_param: image}
      networks:
        - port: {get_resource: port}
      tags:
        - t1
  external_ser:
    type: OS::Nova::Server
    external_id: 1c002884-4675-4791-82ec-cd3ee81ff86a
  port:
    type: OS::Neutron::Port
    properties:
      network: private
******************
4. to delete the stack, then an error raised: TypeError: 'NoneType' object has no attribute '__getitem__'

[huangtianhua (huangtianhua)]

The error details see: http://paste.openstack.org/show/620916/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/503892

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/503892
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=1861ad88670581e0658c8010950edd54ea4de422
Submitter: Jenkins
Branch: master

commit 1861ad88670581e0658c8010950edd54ea4de422
Author: huangtianhua <email address hidden>
Date: Thu Sep 14 10:16:01 2017 +0800

    Remove the existing snapshots from the backend

    We only have to remove the existing snapshots
    for resources when stack delete.

    Change-Id: Ia195f3c3380fe71e0888c8291209dd4562318951
    Closes-Bug: #1716612

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/pike
Review: https://review.openstack.org/507005

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/507005
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=0d06c9674a8ce415ee2eb20e6518c06a0668a242
Submitter: Jenkins
Branch: stable/pike

commit 0d06c9674a8ce415ee2eb20e6518c06a0668a242
Author: huangtianhua <email address hidden>
Date: Thu Sep 14 10:16:01 2017 +0800

    Remove the existing snapshots from the backend

    We only have to remove the existing snapshots
    for resources when stack delete.

    Change-Id: Ia195f3c3380fe71e0888c8291209dd4562318951
    Closes-Bug: #1716612
    (cherry picked from commit 1861ad88670581e0658c8010950edd54ea4de422)

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/ocata
Review: https://review.openstack.org/508382

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/heat 10.0.0.0b1 development milestone.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/heat 9.0.1 release.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/508382
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=647c0df185a6bf20f1ddf1e83fb591adb090d200
Submitter: Zuul
Branch: stable/ocata

commit 647c0df185a6bf20f1ddf1e83fb591adb090d200
Author: huangtianhua <email address hidden>
Date: Thu Sep 14 10:16:01 2017 +0800

    Remove the existing snapshots from the backend

    We only have to remove the existing snapshots
    for resources when stack delete.

    Change-Id: Ia195f3c3380fe71e0888c8291209dd4562318951
    Closes-Bug: #1716612
    (cherry picked from commit 1861ad88670581e0658c8010950edd54ea4de422)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/heat 8.0.6 release.