pentaho/pentaho-mongodb-plugin — pull request #73 by akhayrutdinov (2014-08-11 08:19:08+00:00)
Title: [PDI-12599] - MongoDB Output step has a race condition in batch insert retries that can cause errors to be logged.

It seems to be impossible to prevent a driver from throwing an exception, thus it makes sense to merely avoid it after recognising the case properly.