Channel size exceeded - ensure this value is less than or equal to 2147483647

[sentry]

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Observed behavior

QA team member attempted to publish a channel with a reported size greater than the 32-bit integer limit.

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Sentry Issue: STUDIO-J64

ValidationError: {'size': ['Ensure this value is less than or equal to 2147483647.']}
(2 additional frame(s) were not displayed)
...
  File "contentcuration/viewsets/channel.py", line 556, in publish_from_changes
    self.publish(
  File "contentcuration/viewsets/channel.py", line 583, in publish
    channel = publish_channel(
  File "contentcuration/utils/publish.py", line 1177, in publish_channel
    fill_published_fields(channel, version_notes)
  File "contentcuration/utils/publish.py", line 1045, in fill_published_fields
    channel.version_info.save()
  File "contentcuration/models.py", line 1639, in save
    self.full_clean()

Investigation

Perhaps we need to change this field to a BIG INT?

[bjester]

From @pcenov:

Actually I've been publishing very small test channels throughout the day, so it should definitely be further investigated! :)

Perhaps this size calculation is incorrect!