I have a Spark DataFrame like this: +-------+------+-----+---------------+ |Account|nature|value| time| +-------+------+-----+---------------+ |
blobxfer
appveyor
glibmm
flops
mongodb-lookup
postscript
scalameter
load-balancing
eclipse-3.4
intersect
mandelbrot
bnlearn
mapped-types
findwindowex
distortion
initrd
heapsort
ocaml-core
mpj-express
amazon-cognito-facebook
ng2-completer
nettcpbinding
conduktor
ottoman-node
ghidra
livecycle-designer
ms-query
geom-bar
samsung-gear-fit
referrals