Local vs Cluster

Hi, What is the Spark cluster equivalent of standalone's local[N]. I mean, the value we set as a parameter of local as N, which parameter takes it in the cluster mode? Thanks, Aakash.

Re: Local vs Cluster

Local only one JVM, runs on the host you submitted the job ${SPARK_HOME}/bin/spark-submit \ --master local[N] \ Standalone meaning using Spark own scheduler ${SPARK_HOME}/bin/spark-submit \ --master spark:// \ Where IP_ADDRESS is the host your Spark master sta

Re: Local vs Cluster

Hi Aakash, in the cluster you need to consider the total number of executors you are using. Please take a look in the following link for an introduction. https://spoddutur.github.io/spark-notes/distribution_of_executors_cores_and_memory_for_spark_application.html regards, Apostolos On

Is there any open source framework that converts Cypher to SparkSQL?

Hi All, Is there any open source framework that converts Cypher to SparkSQL? Thanks!

DAGScheduler in SparkStreaming

A question, if you use Spark Streaming, the DAG is calculated for each microbatch? it's possible to calculate only the first time?

Spark2 DynamicAllocation doesn't release executors that used cache

Hi, We're starting to use Spark2 with usecases for Dynamic Allocation. However, it was noticed it doesn't work as expected when dataset is cached&uncached (persist&unpersist). The cluster runs with: CDH 5.15.0 Spark 2.3.0 Oracle Java 8.131 The following configs are passed to spark (as well as se

Re: Unsubscribe

On Thu, Sep 13, 2018 at 7:47 PM Pekka Lehtonen wrote: > >

What is the best way for Spark to read HDF5@scale?

Hi, Any Spark-connector for HDF5? The following link does not work anymore? https://www.hdfgroup.org/downloads/spark-connector/ down vo Thanks, Kathleen

Re: Python Dependencies Issue on EMR

You didn't say how you're zipping the dependencies, but I'm guessing you either include .egg files or zipped up a virtualenv. In either case, the extra C stuff that scipy and pandas rely upon doesn't get included. An approach like this solved the last problem I had that seemed like this - https://

Re: StackOverflow Error when run ALS with 100 iterations

Just wanted to add a comment to the Jira ticket but I don't think I have permission to do so, so answering here instead. I am encountering the same issue with a stackOverflow Exception. I would like to point out that there is a localCheckpoint

[SparkSQL] Count Distinct issue

Hi all, I am having some troubles in doing a count distinct over multiple columns. This is an example of my data: ++++---+ |a |b |c |d | ++++---+ |null|null|null|1 | |null|null|null|2 | |null|null|null|3 | |null|null|null|4 | |null|null|null|5 | |null|null|null|

[Spark SQL] Catalyst ScalaReflection/ExpressionEncoder fail with relocated (shaded) classes

Hello, I'm trying to compile google's timestamp.proto protobuf to a scala case class and use it as a field in another proto-derived case class as part of a larger dataset schema. (Although the SQL date type might be preferred in a schema, I encountered this problem when I attempted to use Timestam