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Persist this SparkDataFrame with the specified storage level. For details of the supported storage levels, refer to https://spark.apache.org/docs/latest/rdd-programming-guide.html#rdd-persistence.

Usage

persist(x, newLevel)

# S4 method for class 'SparkDataFrame,character'
persist(x, newLevel)

Arguments

x

the SparkDataFrame to persist.

newLevel

storage level chosen for the persistence. See available options in the description.

Note

persist since 1.4.0

Examples

if (FALSE) { # \dontrun{
sparkR.session()
path <- "path/to/file.json"
df <- read.json(path)
persist(df, "MEMORY_AND_DISK")
} # }