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[Bug 1317392] [NEW] Glance image-list returns different results for MySQL and PostgreSQL

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Public bug reported:

Glance image-list is returning different results for MySQL and
PostgreSQL with sort_key=name

Steps to reproduce:

1. Assume images with following names are present in database
   
   'image--1439541877',
   'Fedora-x86_64-20-20131211.1-sda', 
   'cirros-0.3.1-x86_64-uec-ramdisk',
   'cirros-0.3.1-x86_64-uec-kernel',
   'cirros-0.3.1-x86_64-uec'

2.   
a. For MySQL :

List Images with sort_key = name
   $ glance image-list --sort-key=name --sort-dir=desc

Output:
+--------------------------------------+---------------------------------+-------------+------------------+----------+-------+
| ID                                   | Name                            | Disk Format | Container Format | Size     | Status |
+--------------------------------------+---------------------------------+-------------+------------------+----------+--------+
| 662998c2-4e19-4ddf-9eb4-91ad1ffae8c9 | image--1439541877               | qcow2       | bare             | 12185586 | active 
| d067e2bd-7679-4e36-a1d0-0715e1d11a84 | cirros-0.3.1-x86_64-uec         | ami         | ami              | 25165824 | active |
| 61ebb7f7-56ff-423b-8816-838a31ada1bf | cirros-0.3.1-x86_64-uec-kernel  | aki         | aki              | 4955792  | active |
| 87f3642c-a1b7-4925-948c-05684b5fcb93 | cirros-0.3.1-x86_64-uec-ramdisk | ari         | ari              | 3714968  | active |
| e6aeba3c-07d9-4b40-96c9-8013c52e8816 | Fedora-x86_64-20-20131211.1-sda | qcow2       | bare             | 2341     | queued |
-------------------------------------------------------------------------------------------------------------------------------
Here ,'Fedora-x86_64-20-20131211.1-sda' is at last position . 

b. For PostgreSQL :

List Images with sort_key = name
   $ glance image-list --sort-key=name --sort-dir=desc

Output:
+--------------------------------------+---------------------------------+-------------+------------------+----------+-------+
| ID                                   | Name                            | Disk Format | Container Format | Size     | Status |
+--------------------------------------+---------------------------------+-------------+------------------+----------+--------+
| 662998c2-4e19-4ddf-9eb4-91ad1ffae8c9 | image--1439541877               | qcow2       | bare             | 12185586 | active 
| e6aeba3c-07d9-4b40-96c9-8013c52e8816 | Fedora-x86_64-20-20131211.1-sda | qcow2       | bare             | 2341     | queued |
| d067e2bd-7679-4e36-a1d0-0715e1d11a84 | cirros-0.3.1-x86_64-uec         | ami         | ami              | 25165824 | active |
| 61ebb7f7-56ff-423b-8816-838a31ada1bf | cirros-0.3.1-x86_64-uec-kernel  | aki         | aki              | 4955792  | active |
| 87f3642c-a1b7-4925-948c-05684b5fcb93 | cirros-0.3.1-x86_64-uec-ramdisk | ari         | ari              | 3714968  | active |
------------------------------------------------------------------------------------------------------------------------------- 
Here 'Fedora-x86_64-20-20131211.1-sda' is at 2nd position.
  
Note :
I am adding a new test case in glance tempest to 'list image with sort_key'
Blueprint: testcases-expansion-icehouse

But after submitting the patch to the community, Jenkins is continuously failing with mismatch error for Test: check-tempest-dsvm-postgres-full
Please refer:
http://logs.openstack.org/69/81769/12/check/check-tempest-dsvm-postgres-full/411e98c/console.html

Locally this test case is getting passed where i am using MySQL
Database.

** Affects: glance
     Importance: Undecided
         Status: New


** Tags: ntt

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https://bugs.launchpad.net/bugs/1317392

Title:
  Glance image-list returns different results for MySQL and PostgreSQL

Status in OpenStack Image Registry and Delivery Service (Glance):
  New

Bug description:
  Glance image-list is returning different results for MySQL and
  PostgreSQL with sort_key=name

  Steps to reproduce:

  1. Assume images with following names are present in database
     
     'image--1439541877',
     'Fedora-x86_64-20-20131211.1-sda', 
     'cirros-0.3.1-x86_64-uec-ramdisk',
     'cirros-0.3.1-x86_64-uec-kernel',
     'cirros-0.3.1-x86_64-uec'

  2.   
  a. For MySQL :

  List Images with sort_key = name
     $ glance image-list --sort-key=name --sort-dir=desc

  Output:
  +--------------------------------------+---------------------------------+-------------+------------------+----------+-------+
  | ID                                   | Name                            | Disk Format | Container Format | Size     | Status |
  +--------------------------------------+---------------------------------+-------------+------------------+----------+--------+
  | 662998c2-4e19-4ddf-9eb4-91ad1ffae8c9 | image--1439541877               | qcow2       | bare             | 12185586 | active 
  | d067e2bd-7679-4e36-a1d0-0715e1d11a84 | cirros-0.3.1-x86_64-uec         | ami         | ami              | 25165824 | active |
  | 61ebb7f7-56ff-423b-8816-838a31ada1bf | cirros-0.3.1-x86_64-uec-kernel  | aki         | aki              | 4955792  | active |
  | 87f3642c-a1b7-4925-948c-05684b5fcb93 | cirros-0.3.1-x86_64-uec-ramdisk | ari         | ari              | 3714968  | active |
  | e6aeba3c-07d9-4b40-96c9-8013c52e8816 | Fedora-x86_64-20-20131211.1-sda | qcow2       | bare             | 2341     | queued |
  -------------------------------------------------------------------------------------------------------------------------------
  Here ,'Fedora-x86_64-20-20131211.1-sda' is at last position . 

  b. For PostgreSQL :

  List Images with sort_key = name
     $ glance image-list --sort-key=name --sort-dir=desc

  Output:
  +--------------------------------------+---------------------------------+-------------+------------------+----------+-------+
  | ID                                   | Name                            | Disk Format | Container Format | Size     | Status |
  +--------------------------------------+---------------------------------+-------------+------------------+----------+--------+
  | 662998c2-4e19-4ddf-9eb4-91ad1ffae8c9 | image--1439541877               | qcow2       | bare             | 12185586 | active 
  | e6aeba3c-07d9-4b40-96c9-8013c52e8816 | Fedora-x86_64-20-20131211.1-sda | qcow2       | bare             | 2341     | queued |
  | d067e2bd-7679-4e36-a1d0-0715e1d11a84 | cirros-0.3.1-x86_64-uec         | ami         | ami              | 25165824 | active |
  | 61ebb7f7-56ff-423b-8816-838a31ada1bf | cirros-0.3.1-x86_64-uec-kernel  | aki         | aki              | 4955792  | active |
  | 87f3642c-a1b7-4925-948c-05684b5fcb93 | cirros-0.3.1-x86_64-uec-ramdisk | ari         | ari              | 3714968  | active |
  ------------------------------------------------------------------------------------------------------------------------------- 
  Here 'Fedora-x86_64-20-20131211.1-sda' is at 2nd position.
    
  Note :
  I am adding a new test case in glance tempest to 'list image with sort_key'
  Blueprint: testcases-expansion-icehouse

  But after submitting the patch to the community, Jenkins is continuously failing with mismatch error for Test: check-tempest-dsvm-postgres-full
  Please refer:
  http://logs.openstack.org/69/81769/12/check/check-tempest-dsvm-postgres-full/411e98c/console.html

  Locally this test case is getting passed where i am using MySQL
  Database.

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