I tried it before, but still I am not able to see a proper round robin across
the jobs I submit.
Given this:
<pool name="production">
<schedulingMode>FAIR</schedulingMode>
<weight>1</weight>
<minShare>2</minShare>
</pool>
Each jobs inside production pool should be scheduled in round robin way, am I
right?
________________________________
From: Mark Hamstra <[email protected]>
Sent: Thursday, September 1, 2016 8:19:44 PM
To: enrico d'urso
Cc: [email protected]
Subject: Re: Spark scheduling mode
The default pool (`<pool name = "default">`) can be configured like any other
pool:
https://spark.apache.org/docs/latest/job-scheduling.html#configuring-pool-properties
On Thu, Sep 1, 2016 at 11:11 AM, enrico d'urso
<[email protected]<mailto:[email protected]>> wrote:
Is there a way to force scheduling to be fair inside the default pool?
I mean, round robin for the jobs that belong to the default pool.
Cheers,
________________________________
From: Mark Hamstra <[email protected]<mailto:[email protected]>>
Sent: Thursday, September 1, 2016 7:24:54 PM
To: enrico d'urso
Cc: [email protected]<mailto:[email protected]>
Subject: Re: Spark scheduling mode
Just because you've flipped spark.scheduler.mode to FAIR, that doesn't mean
that Spark can magically configure and start multiple scheduling pools for you,
nor can it know to which pools you want jobs assigned. Without doing any setup
of additional scheduling pools or assigning of jobs to pools, you're just
dumping all of your jobs into the one available default pool (which is now
being fair scheduled with an empty set of other pools) and the scheduling of
jobs within that pool is still the default intra-pool scheduling, FIFO -- i.e.,
you've effectively accomplished nothing by only flipping spark.scheduler.mode
to FAIR.
On Thu, Sep 1, 2016 at 7:10 AM, enrico d'urso
<[email protected]<mailto:[email protected]>> wrote:
I am building a Spark App, in which I submit several jobs (pyspark). I am using
threads to run them in parallel, and also I am setting:
conf.set("spark.scheduler.mode", "FAIR") Still, I see the jobs run serially in
FIFO way. Am I missing something?
Cheers,
Enrico
