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[XiaojueGuan <1433765@xxxxxxxxxxxxxxxxxx>]

** Changed in: horizon
       Status: Incomplete => Invalid

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https://bugs.launchpad.net/bugs/1433765

Title:
  FileField need clean up temp file and and get file size without
  loading file

Status in OpenStack Dashboard (Horizon):
  Invalid

Bug description:
  
  We are using forms.FileField to upload a client local file. 

  We noticed that if the file size is big, for example 7 gb,  Horizon
  dumps a temp file in /tmp dir where horizon server runs. If the file
  loaded is different each time, the temp files are left in the /tmp.
  Over the long run, it could overflow the disk spaces.

  We would like to have a way to clean up the tmp file once file loading
  is done.

  The way that we use to get the file handle  in the form's clean or
  handle method is :

  f = self.request.FILES['file"]

  If we use this to get the file size in the clean method to validate,
  the whole file gets loaded either into memory or to temp dir,  it
  would be nice to get the file size without loading the whole file.

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