convertKafkaValueFromJson

<p>Spark Structured Streaming DataFrame which is returned by the <code>castKafkaStreamAsString</code> function</p>

streamObj

<p>A structType object created from SparkR specifying the schema of the json data present in the <code>value</code>
attribute of the incoming Kafka stream</p>

schema

Enables data scientists to compose pipelines of analysis which consist of data manipulation, exploratory analysis & reporting, as well as modeling steps. Data scientists can use tools of their choice through an R interface, and compose interoperable pipelines between R, Spark, and Python.
Credits to Mu Sigma for supporting the development of the package.
Note - To enable pipelines involving Spark tasks, the package uses the 'SparkR' package.
The SparkR package needs to be installed to use Spark as an engine within a pipeline. SparkR is distributed natively with Apache Spark and is not distributed on CRAN. The SparkR version needs to directly map to the Spark version (hence the native distribution), and care needs to be taken to ensure that this is configured properly.
To install SparkR from Github, run the following command if you know the Spark version: 'devtools::install_github('apache/spark@v2.x.x', subdir='R/pkg')'.
The other option is to install SparkR by running the following terminal commands if Spark has already been installed: '$ export SPARK_HOME=/path/to/spark/directory && cd $SPARK_HOME/R/lib/SparkR/ && R -e "devtools::install('.')"'.

Mu Sigma, Inc. 

analysisPipelines

Compose Interoperable Analysis Pipelines & Put Them in
Production

Naren Srinivasan

Zubin Dowlaty 

Sanjay 

Neeratyoy Mallik

Anoop S 

convertKafkaValueFromJson function

Connect to a Spark session — convertKafkaValueFromJson

Connect to a Spark session

convertKafkaValueFromJson: Connect to a Spark session

Description

Usage

Arguments

Value

Details

See Also