not parallel.
Spark only execute tasks with Action,(‘collect' here)
rdd1.collect and rdd2.collect are executed sequencely, so Spark execute two
tasks one by one.
> On Oct 26, 2015, at 7:26 PM, praveen S <mylogi...@gmail.com> wrote:
>
> Does spark run different actions of an rdd within a driver in parallel also?
>
> Let's say
> class Driver{
>
> val rdd1= sc. textFile("... ")
> val rdd2=sc.textFile("....")
> rdd1. collect //Action 1
> rdd2. collect //Action 2
>
> }
>
> Does Spark run Action 1 & 2 run in parallel? ( some kind of a pass through
> the driver code and than start the execution)?
>
> if not than is using threads safe for independent actions/red's?
>
