Apache Spark RefCardz by Ashwini Kuntamukkala.
Counting the cover, four (4) out of the eight (8) pages don’t qualify for inclusion in a cheat sheet or refcard. Depending on how hard you want to push that, the count could easily be six (6) out of the eight (8) pages should not be in a cheat sheet or refcard.
Reasoning that cheat sheets or refcards are meant for practitioners or experts who have forgotten a switch on date or bc.
The “extra” information present on this RefCard is useful but you will rapidly outgrow it. Unless you routinely need help installing Apache Spark or working a basic word count problem.
A two (2) page (front/back) cheatsheet for Spark would be more useful.