[wp-trac] [WordPress Trac] #48472: The "wp_generate_attachment_metadata" filter is not fired when the initial upload request fails but the upload was completed successfully by retrying to create image sub-sizes

[WordPress Trac]

#48472: The "wp_generate_attachment_metadata" filter is not fired when the initial
upload request fails but the upload was completed successfully by retrying
to create image sub-sizes
--------------------------+-----------------------------
 Reporter:  azaozz        |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  Upload        |    Version:  trunk
 Severity:  normal        |   Keywords:
  Focuses:                |
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 After #47872 it became possible to successfully complete an uploaded image
 post-processing even when the initial upload request resulted in a server
 error/PHP running out of resources.

 However when that happens the `wp_generate_attachment_metadata` filter is
 never reached and is not fired as expected. As this is the de-facto
 "upload is now completed successfully" hook, it causes problems in both
 updating/filtering the metadata on successful uploads and when using it to
 trigger additional post-processing.

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Ticket URL: <https://core.trac.wordpress.org/ticket/48472>
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