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Subject: Concurrent execution of actions within a driver
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. coll
Spark executes tasks on an action. An action is broken down to multiple
tasks. Multiple tasks from different actions run either in FIFO or FAIR
mode depending on spark.scheduler.mode.
Of course to get benefit of FAIR scheduling the two actions should be
called by different threads.
On Mon, Oct 26,
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 wrote:
>
> Does spark run different actions of an rdd within a driver in parallel als
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 dri
