elasticsearch/elasticsearch — pull request #7987 by reuben-sutton (2014-10-04 17:48:30+00:00)
Title: Change IndexPrimaryShardNotAllocatedException from 409 to 500

Closes #7632

Change IndexPrimaryShardNotAllocatedException from 409 (RestStatus.CONFLICT) to 500 (RestStatus.INTERNAL_SERVER_ERROR)