When searching for transaction information, only ask to readable nodes.

git-svn-id: https://svn.erp5.org/repos/neo/trunk@1830 71dcc9de-d417-0410-9af5-da40c76e7ee4

neo/client/app.py

@@ -764,7 +764,7 @@ class Application(object):
             raise StorageTransactionError(self, transaction_id)
 
         # First get transaction information from a storage node.
-        cell_list = self._getCellListForTID(transaction_id, writable=True)
+        cell_list = self._getCellListForTID(transaction_id, readable=True)
         shuffle(cell_list)
         for cell in cell_list:
             conn = self.cp.getConnForCell(cell)