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[OpenStack Infra <1591004@xxxxxxxxxxxxxxxxxx>]

Reviewed:  https://review.openstack.org/328013
Committed: https://git.openstack.org/cgit/openstack/glance/commit/?id=bf53c1b8f18b494b97454ba4142679ad5052f8c2
Submitter: Jenkins
Branch:    master

commit bf53c1b8f18b494b97454ba4142679ad5052f8c2
Author: Sabari Kumar Murugesan <smurugesan@xxxxxxxxxx>
Date:   Thu Jun 9 17:35:06 2016 -0700

    Do not set header if checksum doesn't exist
    
    When image caching is disabled, we don't set the 'Content-MD5' header
    if there is no checksum. We need to do the same when cache middleware
    is enabled. This will make the response consistent. Second, it also
    fixes an issue where we try to encode the header without checking
    if it's defined.
    
    Closes-Bug: #1591004
    
    Change-Id: I3b3c58db3a839728a0d019594b2cecce4f0f8a1e


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

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https://bugs.launchpad.net/bugs/1591004

Title:
  Unable to download image with no checksum when cache is enabled

Status in Glance:
  Fix Released

Bug description:
  When cache middleware is enabled in the pipeline (default with
  devstack) and you create an image using HTTP URL, the image cannot be
  downloaded the second time.

  Steps
  1. glance image-create --name cirros_test --disk-format raw --container-format bare
  2. glance location-add --url "http://download.cirros-cloud.net/0.3.4/cirros-0.3.4-i386-disk.img"; <IMAGE_ID>
  3. glance image-download f6c43e4f-0927-4484-baf4-681c96b950fc > /tmp/1
    [Success]
  4. glance image-download f6c43e4f-0927-4484-baf4-681c96b950fc > /tmp/2
     Unable to download image 'f6c43e4f-0927-4484-baf4-681c96b950fc'. (HTTPInternalServerError (HTTP 500))

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