SparkR (version 2.3.0)

broadcast: broadcast

Description

Return a new SparkDataFrame marked as small enough for use in broadcast joins.

Usage

broadcast(x)
# S4 method for SparkDataFrame
broadcast(x)

Arguments

x

a SparkDataFrame.

Value

a SparkDataFrame.

Details

Equivalent to hint(x, "broadcast").

See Also

Other SparkDataFrame functions: SparkDataFrame-class, agg, alias, arrange, as.data.frame, attach,SparkDataFrame-method, cache, checkpoint, coalesce, collect, colnames, coltypes, createOrReplaceTempView, crossJoin, cube, dapplyCollect, dapply, describe, dim, distinct, dropDuplicates, dropna, drop, dtypes, except, explain, filter, first, gapplyCollect, gapply, getNumPartitions, group_by, head, hint, histogram, insertInto, intersect, isLocal, isStreaming, join, limit, localCheckpoint, merge, mutate, ncol, nrow, persist, printSchema, randomSplit, rbind, registerTempTable, rename, repartition, rollup, sample, saveAsTable, schema, selectExpr, select, showDF, show, storageLevel, str, subset, summary, take, toJSON, unionByName, union, unpersist, withColumn, withWatermark, with, write.df, write.jdbc, write.json, write.orc, write.parquet, write.stream, write.text

Examples

# NOT RUN {
df <- createDataFrame(mtcars)
avg_mpg <- mean(groupBy(createDataFrame(mtcars), "cyl"), "mpg")

head(join(df, broadcast(avg_mpg), df$cyl == avg_mpg$cyl))
# }