beam-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Juan Carlos Garcia <>
Subject Re: Spark storageLevel not taking effect
Date Fri, 12 Oct 2018 12:20:59 GMT
Hi Mike,

>From the documentation on

storageLevel The StorageLevel to use when caching RDDs in batch pipelines.
The Spark Runner automatically caches RDDs that are evaluated repeatedly.
This is a batch-only property as streaming pipelines in Beam are stateful,
which requires Spark DStream's StorageLevel to be MEMORY_ONLY. MEMORY_ONLY
So i think you are out of luck here.

On Thu, Oct 11, 2018 at 10:05 PM Mike Kaplinskiy <>

> Hey folks,
> Admittedly I may be a bit on the bleeding edge here, but I'm attempting to
> run a Beam pipeline on Spark which is running on top of Kubernetes.
> Specifically Beam 2.6.0 with Spark 2.4.0-rc2 running in client mode with a
> Kubernetes (1.11) driver. It's actually pretty cool - from a Kubernetes
> perspective, I start a pod which starts a ton of workers to do the parallel
> stuff and then cleans up after itself.
> One thing I can't seem to get working is setting the storage level for
> Spark RDDs via Beam. Specifically passing --storageLevel=MEMORY_AND_DISK
> seems to not work - the rdd still shows up as "Memory Deserialized 1x
> Replicated" in the Spark UI. I would expect it to be something closer to
> "Disk Memory Deserialized 1x Replicated." It *seems* to be serialized only
> in the sense that less memory is used (I assume it gets encoded).
> I even tried hardcoding storageLevel in (based on the
> line number in the DAG viz). Unfortunately it still shows up as memory-only.
> Am I missing something that would let me spill data to disk?
> For reference, here's my exact command line:
> /opt/spark/bin/spark-submit
> --master 'k8s://https://kubernetes:443'
> --deploy-mode client
> --name $(MY_POD_NAME)
> --conf spark.executor.instances=20
> --conf$(MY_POD_IP)
> --conf spark.driver.port=7077
> --conf spark.kubernetes.container.image=$(MY_IMAGE)
> --conf$(MY_POD_NAME)
> --conf spark.kubernetes.executor.podNamePrefix=$(MY_POD_NAME)
> --conf spark.executor.memory=5500m
> --conf spark.executor.memoryOverhead=1300m
> --conf spark.memory.fraction=0.45
> --conf spark.executor.cores=3
> --conf spark.kubernetes.executor.limit.cores=3
> --conf spark.default.parallelism=60
> --conf spark.kubernetes.allocation.batch.size=20
> --conf
> --conf
> --conf
> --conf
> --conf spark.kubernetes.executor.secretKeyRef.SENTRY_DSN=sentry-secrets:dsn
> --conf spark.executorEnv.STATSD_HOST=
> --class ladder.my_beam_job
> local:///srv/beam_job.jar
> --runner=SparkRunner
> --storageLevel=MEMORY_AND_DISK
> Thanks,
> Mike.
> Ladder <>. The smart, modern way to insure your life.



View raw message