[tor-bugs] #10609 [Torflow]: aggregate.py unhappy with input data

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#10609: aggregate.py unhappy with input data
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     Reporter:  ln5      |      Owner:  aagbsn
         Type:  defect   |     Status:  new
     Priority:  normal   |  Milestone:
    Component:  Torflow  |    Version:
   Resolution:           |   Keywords:
Actual Points:           |  Parent ID:
       Points:           |
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Comment (by aagbsn):

 Perhaps a bws-* file was still open and being written to while
 aggregate.py was trying to read it? We could add exclusive locking (see
 fcntl) to make sure that the bws-* files are written atomically.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/10609#comment:4>
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