sparklyr | R interface for Apache Spark
kandi X-RAY | sparklyr Summary
kandi X-RAY | sparklyr Summary
sparklyr: R interface for Apache Spark.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of sparklyr
sparklyr Key Features
sparklyr Examples and Code Snippets
Community Discussions
Trending Discussions on sparklyr
QUESTION
I am running Spark 2.4.4 using Yarn and interfacing using RSparkling and Sparklyr
As per these instructions I've
- Installed Sparklyr
- Called the library for Sparklyr
- Removed any prior installs of H2O
- Installed the latest version of H2O (rel-zorn)
- Installed rsparkling 3.36.0.3-1-2.4
- Called the library for rsparkling
- Specified my spark_config()
- Successfully made a connection to Spark using Yarn
- Ran h2oConf <- H2OConf()
When I try to make a H2O context using the h2oConf above I get the following error:
...ANSWER
Answered 2022-Mar-25 at 13:08It seems that your environment still contains old H2O R library. cacert
is an valid parameter and it was introduced in H2O 3.26.0.6.
QUESTION
I am using RStudio Cloud and I want to connect to Spark using sparklyr
package. I tried a local master and a yarn
master. The code is as below.
ANSWER
Answered 2022-Mar-13 at 08:39This could be a problem with the version of Spark.
This works fine for me, on a new project on RStudio Cloud:
QUESTION
New in Azure Databricks environment, I discover the packages SparkR
and sparklyr
.
From my notebooks with SparkR
, I manage to connect to a database :
ANSWER
Answered 2022-Jan-13 at 09:04If it helps anyone, here's what I found that seems to work.
- Setting the default data base
- Read table in default data base
QUESTION
Background
I'm doing some data manipulation (joins, etc.) on a very large dataset in R
, so I decided to use a local installation of Apache Spark and sparklyr
to be able to use my dplyr
code to manipulate it all. (I'm running Windows 10 Pro; R
is 64-bit.) I've done the work needed, and now want to output the sparklyr
table to a .csv file.
The Problem
Here's the code I'm using to output a .csv file to a folder on my hard drive:
...ANSWER
Answered 2021-Aug-10 at 18:45Data will be divided into multiple partitions. When you save the dataframe to CSV, you will get file from each partition. Before calling spark_write_csv method you need to bring all the data to single partition to get single file.
You can use a method called as coalese to achieve this.
QUESTION
I'm using: R version 4.1.1 sparklyr version ‘1.7.2’
I'm connected to my databricks cluster with databricks-connect and trying to read an avro file using the following code:
...ANSWER
Answered 2021-Oct-15 at 10:39I found a workaround using sparkavro package:
QUESTION
I have a Spark dataframe in a SparklyR interface, and I'm trying to extract elements from an array column.
...ANSWER
Answered 2021-Sep-12 at 00:21The following solution came to mind.
QUESTION
I have a spark dataframe I'm manipulating using sparklyr that looks like the following:
...ANSWER
Answered 2021-Aug-30 at 23:18The following matches your requested output format, and process the data in the way I understand you want, but (as per the comment by @Martin Gal) does not match the example result you provided.
QUESTION
Background
This may be my lack of skill showing, but as I'm working on data manipulation in R
, using RStudio, I'm fond of clicking into dataframes in the "Environments" section of the GUI (for me it's in the top-right of the screen) to see how my joins, mutates, etc. are changing the table(s) as I move through my workflow. It acts as a visual sanity check for me; when it comes to tables and dataframes I'm a very visual thinker, and I like to see my results as I code. As an example, I click on this:
And see something like this:
The Problem
Lately, because of a very large dataset (~200m rows), I've needed to do some of my dplyr
work inside sparklyr
, using a local instance of Apache Spark to work through some data manipulation. It's working mostly fine, but I lose my ability to have little previews of the data because spark dataframe objects look like lists in the Environment pane:
Besides clicking, is there a way I can "preview" my Spark dataframes inside RStudio as I work on them?
What I've tried
So your first thought might be "just use head()
" -- and you'd be right! Except that running head(d1, 5)
on a local Spark df
with 200 million rows takes ... a long time.
Anything I may be missing?
...ANSWER
Answered 2021-Aug-12 at 21:11Generally, I believe you need to call collect() on the Spark dataframe. So I would first sample the Spark dataframe, say .001% of the rows (if there's 200 million) with the sparklyr::sdf_sample
function, and then collect that sample into a regular dataframe to look at.
QUESTION
Im trying to convert the following to a 24 hour time using sparklyr:
...ANSWER
Answered 2021-Aug-10 at 18:00You can set spark.sql.legacy.timeParserPolicy to LEGACY as shown below:
QUESTION
I'm trying to develop a simple logistic regression model using Tidymodels with the Spark engine. My code works fine when I specify set_engine = "glm"
, but fails when I attempt to set the engine to spark
. Any advice would be much appreciated!
ANSWER
Answered 2021-Jul-10 at 04:15So the support for Spark in tidymodels is not even across all the parts of a modeling analysis. The support for modeling in parsnip is good, but we don't have fully featured support for feature engineering in recipes or putting those building blocks together in workflows. So for example, you can fit just the logistic regression model:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install sparklyr
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page