WWM Mic Wind: do not delay ingestion for some turbines

bt5/erp5_wendelin/DocumentTemplateItem/portal_components/document.erp5.DataStream.py

@@ -63,6 +63,10 @@ class DataStream(BigFile):
   def appendData(self, data_chunk):
     db = self.getPortalObject().erp5_sql_connection()
     if self.getId() in ('150', '152', '154', '156'):
+      # WARNING: This precaution is not enough because there can still be a
+      #          race condition between a zope using the old code and another
+      #          using the new code, when the table does not contain any data
+      #          yet for this stream.
       if not db.query('SELECT 1 FROM data_stream_queue WHERE uid=%s'
                       % self.getUid(), max_rows=1)[1]:
         BigFile.appendData(self, data_chunk)