am 54bd4cae: (-s ours) am 8ea6e641: am 266ea6b0: Merge "Optimize EventHub to process events in big chunks. (DO NOT MERGE)" into honeycomb-mr2

* commit '54bd4caeabc5daddfce56269949daccd8e7bf661':
  Optimize EventHub to process events in big chunks. (DO NOT MERGE)