[Checkins] [zopefoundation/ZODB] eb64a2: mvccadapter: fix race with invalidations when star...

[Julien Muchembled]

  Branch: refs/heads/issue290
  Home:   https://github.com/zopefoundation/ZODB
  Commit: eb64a2b240cbc22d136ac2e59e45e50f9e389a2b
      https://github.com/zopefoundation/ZODB/commit/eb64a2b240cbc22d136ac2e59e45e50f9e389a2b
  Author: Julien Muchembled <jm at nexedi.com>
  Date:   2019-12-19 (Thu, 19 Dec 2019)

  Changed paths:
    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