[Checkins] [zopefoundation/ZODB] 873156: mvccadapter: fix race with invalidations when star...

[Julien Muchembled]

  Branch: refs/heads/issue290
  Home:   https://github.com/zopefoundation/ZODB
  Commit: 8731565739b7343b4286e456162769dac522566b
      https://github.com/zopefoundation/ZODB/commit/8731565739b7343b4286e456162769dac522566b
  Author: Julien Muchembled <jm at nexedi.com>
  Date:   2020-01-22 (Wed, 22 Jan 2020)

  Changed paths:
    M CHANGES.rst
    M src/ZODB/FileStorage/tests.py
    M src/ZODB/mvccadapter.py
    M src/ZODB/tests/testConnection.py
    M src/ZODB/tests/testmvcc.py

  Log Message:
  -----------
  mvccadapter: fix race with invalidations when starting a new transaction