Hi all RPS HA Design doc(ver0.1) is here: https://issues.apache.org/jira/secure/attachment/12864941/RPSHADesign_v0.1.pdf
We designed two HA strategy: the default strategy with local and standby RPS, and also provides a RPS cluster strategy for specific scenario. It's a draft now, please feel free to comment on: https://issues.apache.org/jira/browse/HAWQ-1436 Thanks! -- Regards, Hongxu.