storage: commit when replicating many transactions

neo/storage/handlers/storage.py

@@ -77,6 +77,9 @@ class StorageOperationHandler(EventHandler):
                 deleteTransaction(tid)
         assert not pack_tid, "TODO"
         if next_tid:
+            # More than one chunk ? This could a full replication so avoid
+            # restarting from the beginning by committing now.
+            self.app.dm.commit()
             self.app.replicator.fetchTransactions(next_tid)
         else:
             self.app.replicator.fetchObjects()
@@ -96,6 +99,9 @@ class StorageOperationHandler(EventHandler):
             for serial, oid_list in object_dict.iteritems():
                 for oid in oid_list:
                     deleteObject(oid, serial)
+        # XXX: It should be possible not to commit here if it was the last
+        #      chunk, because we'll either commit again when updating
+        #      'backup_tid' or the partition table.
         self.app.dm.commit()
         assert not pack_tid, "TODO"
         if next_tid: