apache/spark — pull request #2148 by rnowling (2014-08-26 20:26:02+00:00)
Title: [GraphX] Fixed backward-incompatible change to logNormalGraph API 

PR #720 added a required parameter to logNormalGraph(), breaking backwards compatibility. PR did not update function docs and GraphX programming guide, either. This new PR makes the parameter optional so that both versions of the API are supported, maintaining backwards compatibility