delete an image using api but the image is still uploading

1:use glance's image-create command create a new image
# glance --os-image-api-version 1 image-create --name centos7 --disk-format qcow2 --container-format bare --copy-from http://ip/images/centos.img --progress
+------------------+--------------------------------------+
| Property | Value |
+------------------+--------------------------------------+
| checksum | None |
| container_format | bare |
| created_at | 2015-12-07T17:33:02.000000 |
| deleted | False |
| deleted_at | None |
| disk_format | qcow2 |
| id | 431ddb0a-bb27-4075-a239-853e317dbce6 |
| is_public | False |
| min_disk | 0 |
| min_ram | 0 |
| name | centos7 |
| owner | 6f517af2441c4986ba94b2e98f82b8f5 |
| protected | False |
| size | 4310695936 |
| status | queued |
| updated_at | 2015-12-07T17:33:02.000000 |
| virtual_size | None |
+------------------+--------------------------------------+

2:image is uploading
# ll /var/lib/glance/images/
total 211328
-rw-r----- 1 glance glance 216399872 Dec 8 01:33 431ddb0a-bb27-4075-a239-853e317dbce6

3:use glance's image-delete command delete this image
# glance --os-image-api-version 1 image-delete 431ddb0a-bb27-4075-a239-853e317dbce6

4:the image is disappear from database but is still uploading
# glance image-list
+----+------+
| ID | Name |
+----+------+
+----+------+
# ll /var/lib/glance/images/
total 673220
-rw-r----- 1 glance glance 689373184 Dec 8 01:34 431ddb0a-bb27-4075-a239-853e317dbce6
# ll /var/lib/glance/images/
total 686532
-rw-r----- 1 glance glance 703004672 Dec 8 01:34 431ddb0a-bb27-4075-a239-853e317dbce6

5: the image file is deleted until upload completely
# ll /var/lib/glance/images/
total 4209668
-rw-r----- 1 glance glance 4310695936 Dec 8 01:39 431ddb0a-bb27-4075-a239-853e317dbce6
# ll /var/lib/glance/images/
total 0

should we kill the upload process when we delete the image by API？