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https://issues.apache.org/jira/browse/TOREE-398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15937724#comment-15937724
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Mario Briggs commented on TOREE-398:
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[~mariusvniekerk] any thoughts on above, since i see your PR handled 2.0
support in R Interpreter
> Toree - R : Error in getSparkSession(): SparkSession not initialized when
> using 'spark'
> ---------------------------------------------------------------------------------------
>
> Key: TOREE-398
> URL: https://issues.apache.org/jira/browse/TOREE-398
> Project: TOREE
> Issue Type: Bug
> Affects Versions: 0.2.0
> Reporter: Mario Briggs
>
> Using Toree R interpreter with Spark 2.0.
> After kernel is initialized, 'spark' var is available
> >>
> spark
> Out[19]:
> Java ref type org.apache.spark.sql.SparkSession id 33
> <<
> However trying to use it , ends up with this
> >>
> localDF <- data.frame(name=c("a", "b", "c"), age=c(19, 23, 18))
> df <- createDataFrame(spark, localDF)
> Out[20]:
> Message: Error in getSparkSession(): SparkSession not initialized
> <<
> Trying to do sparkR.session(), leads to eror that only one SparkContext can
> be created
> Seem zepellin hit same issue and fixed -
> https://issues.apache.org/jira/browse/ZEPPELIN-1260
> I see 2.0 fixes are around this line -
> https://github.com/apache/incubator-toree/blob/master/sparkr-interpreter/src/main/resources/kernelR/sparkr_runner.R#L122
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