patch ZODB3 ( https://mail.zope.org/pipermail/zodb-dev/2014-February/015182.html )

component/egg-patch/ZODB3-3.10.5.patch

+# https://mail.zope.org/pipermail/zodb-dev/2014-February/015182.html
+diff --git a/src/ZODB/FileStorage/FileStorage.py b/src/ZODB/FileStorage/FileStorage.py
+index d45cbbf..d662bf4 100644
+--- a/src/ZODB/FileStorage/FileStorage.py
++++ b/src/ZODB/FileStorage/FileStorage.py
+@@ -683,6 +683,7 @@ def tpc_vote(self, transaction):
+                 # Hm, an error occurred writing out the data. Maybe the
+                 # disk is full. We don't want any turd at the end.
+                 self._file.truncate(self._pos)
++                self._files.flush()
+                 raise
+             self._nextpos = self._pos + (tl + 8)
+ 
+@@ -737,6 +738,7 @@ def _finish_finish(self, tid):
+     def _abort(self):
+         if self._nextpos:
+             self._file.truncate(self._pos)
++            self._files.flush()
+             self._nextpos=0
+             self._blob_tpc_abort()
+ 
+@@ -1996,6 +1998,15 @@ def __init__(self, file_name):
+         self._out = []
+         self._cond = threading.Condition()
+ 
++    def flush(self):
++        """Empty read buffers.
++
++        This is required if they may contain data of rolled back transactions.
++        """
++        with self.write_lock():
++            for f in self._files:
++                f.flush()
++
+     @contextlib.contextmanager
+     def write_lock(self):
+         with self._cond:
+
+# https://github.com/zopefoundation/ZODB/pull/15/files
+diff -ur a/src/ZODB/FileStorage/FileStorage.py b/src/ZODB/FileStorage/FileStorage.py
+--- a/src/ZODB/FileStorage/FileStorage.py
++++ b/src/ZODB/FileStorage/FileStorage.py
+@@ -430,7 +430,7 @@
+                 if h.tid == serial:
+                     break
+                 pos = h.prev
+-                if not pos:
++                if h.tid < serial or not pos:
+                     raise POSKeyError(oid)
+             if h.plen:
+                 return self._file.read(h.plen)

stack/erp5/buildout.cfg

@@ -45,6 +45,7 @@ extends =
   ../../component/percona-toolkit/buildout.cfg
   ../../component/mariadb/buildout.cfg
   ../../component/mysql-python/buildout.cfg
+  ../../component/patch/buildout.cfg
   ../../component/pil-python/buildout.cfg
   ../../component/pycrypto-python/buildout.cfg
   ../../component/pysvn-python/buildout.cfg
@@ -106,6 +107,7 @@ parts =
   wget
 
 # Buildoutish
+  patched-eggs
   eggs
   testrunner
   test_suite_runner
@@ -413,6 +415,13 @@ initialization =
   repository_id_list = list(reversed('''${erp5_repository_list:repository_id_list}'''.split()))
   sys.path[0:0] = ['/'.join(['''${buildout:parts-directory}''', x]) for x in repository_id_list]
 
+[patched-eggs]
+recipe = minitage.recipe.egg
+eggs = ZODB3
+ZODB3-patches = ${:_profile_base_location_}/../../component/egg-patch/ZODB3-3.10.5.patch
+ZODB3-patch-options = -p1
+ZODB3-patch-binary = ${patch:location}/bin/patch
+
 [eggs]
 recipe = zc.recipe.egg
 python = python2.7
@@ -616,6 +625,9 @@ Products.CMFDefault = 2.2.3
 Products.CMFTopic = 2.2.1
 Products.CMFUid = 2.2.1
 
+# patched eggs
+ZODB3 = 3.10.5-ZMinitagePatched-ZODB33105
+
 # newer version requires zope.traversing>=4.0.0a2.
 zope.app.appsetup = 3.16.0