spark shared RDD

[Ben]

Hi,
After reading some documentations about spark and ignite,
I am wondering if shared RDD from ignite can be used to share data in
memory without any duplication between multiple spark jobs.
Running on mesos I can collocate them, but will this be enough to avoid
memory duplication or not?
I am also confused by Tachyon usage compare to apache ignite
which seems to be overlapping at some points.
Thanks for you help
Regards