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https://issues.apache.org/jira/browse/SPARK-9318?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14943810#comment-14943810
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Deborah Siegel commented on SPARK-9318:
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Narine, just want to offer that I haven't replicated that problem.
x <- data.frame(k1 = c(NA,NA,3,4,5), k2 = c(1,NA,NA,4,5), data = 1:5)
y <- data.frame(k1 = c(NA,2,NA,4,5), k2 = c(NA,NA,3,4,5), data = 1:5)
xdf <- createDataFrame(sqlContext, x)
ydf <- createDataFrame(sqlContext, y)
res <- join(xdf,ydf)
head(res)
k1 k2 data k1 k2 data
1 NA 1 1 NA NA 1
2 NA 1 1 2 NA 2
3 NA 1 1 NA 3 3
4 NA 1 1 4 4 4
5 NA 1 1 5 5 5
6 NA NA 2 NA NA 1
> printSchema(res)
root
|-- k1: double (nullable = true)
|-- k2: double (nullable = true)
|-- data: integer (nullable = true)
|-- k1: double (nullable = true)
|-- k2: double (nullable = true)
|-- data: integer (nullable = true)
> Add `merge` as synonym for join
> -------------------------------
>
> Key: SPARK-9318
> URL: https://issues.apache.org/jira/browse/SPARK-9318
> Project: Spark
> Issue Type: Sub-task
> Components: SparkR
> Reporter: Shivaram Venkataraman
> Assignee: Hossein Falaki
> Fix For: 1.5.0
>
>
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