It may involve access an element of an RDD from a remote machine and
copying it back to the driver. That and the small overhead of job
scheduling could be a millisecond.
You're comparing to just reading an entry from memory, which is of
course faster.
I don't think you should think of an RDD as
Hi,
I just wonder what would be the access time to take one element from a
cached RDD? if I have understood correctly, access to RDD elements is not
as fast as accessing e.g. HashMap and it could take up to mili seconds
compare to nano seconds in HashMap, which is quite significant difference
if
