You are being contacted because you are on the Spark user or GraphFrames user list or have expressed interest in a GraphFrames Hackathon.
The first annual GraphFrames Hackathon is taking place on Friday, February 21 :) As we have had interest from the US and Europe, we are going to hack round the clock. You are invited to attend starting at 8AM CET (middle of the night for Americans: 2AM EST/11PM PST) all the way through 5PM PST (2AM CET).