[Xapian-tickets] [Xapian] #648: Allow readers to lock revisions

[Xapian]

#648: Allow readers to lock revisions
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        Reporter:  olly           |      Owner:  olly
            Type:  defect         |     Status:  new
        Priority:  normal         |  Milestone:  1.3.3
       Component:  Backend-Brass  |    Version:  SVN trunk
        Severity:  normal         |   Keywords:
      Blocked By:                 |   Blocking:
Operating System:  All            |
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 If readers could lock the revision they were reading,
 !DatabaseModifiedError could be avoided.

 Brass now uses a freelist implementation to track the blocks which are
 free in each revision, so keeping multiple old revisions around is more
 feasible than it would be with the old base files.

 Marking for 1.3.3 for now.
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Ticket URL: <http://trac.xapian.org/ticket/648>
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