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Return the first num rows of a SparkDataFrame as a R data.frame. If num is not specified, then head() returns the first 6 rows as with R data.frame.

Usage

# S4 method for SparkDataFrame
head(x, num = 6L)

Arguments

x

a SparkDataFrame.

num

the number of rows to return. Default is 6.

Value

A data.frame.

Note

head since 1.4.0

Examples

if (FALSE) {
sparkR.session()
path <- "path/to/file.json"
df <- read.json(path)
head(df)
}