[tahoe-lafs-trac-stream] [Tahoe-LAFS] #2635: Magic Folder: periodically do a full uploader scan

[Tahoe-LAFS]

#2635: Magic Folder: periodically do a full uploader scan
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     Reporter:  daira                |      Owner:  daira
         Type:  defect               |     Status:  new
     Priority:  normal               |  Milestone:  undecided
    Component:  code-frontend-       |    Version:  n/a
  magic-folder                       |   Keywords:  magic-folder
   Resolution:                       |  reliability upload
Launchpad Bug:                       |
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Comment (by daira):

 The current design is wrong because it assumes that `_scan` finishes
 processing all of the descendant directories under the directory it is
 called with, when actually it only adds callbacks to scan all of its
 direct children. This affects both the initial scan triggered by
 `start_scanning` (which assumes that all desendants have been removed from
 the `_pending` set), and the intent of the tests that move subtrees.

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Ticket URL: <https://tahoe-lafs.org/trac/tahoe-lafs/ticket/2635#comment:5>
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