nrow: Returns the number of rows in a SparkDataFrame

Description Usage Arguments Note See Also Examples

Description

Returns the number of rows in a SparkDataFrame

Usage

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## S4 method for signature 'SparkDataFrame'
count(x)

## S4 method for signature 'SparkDataFrame'
nrow(x)

Arguments

x

a SparkDataFrame.

Note

count since 1.4.0

nrow since 1.5.0

See Also

Other SparkDataFrame functions: SparkDataFrame-class, agg, alias, arrange, as.data.frame, attach,SparkDataFrame-method, broadcast, cache, checkpoint, coalesce, collect, colnames, coltypes, createOrReplaceTempView, crossJoin, cube, dapplyCollect, dapply, describe, dim, distinct, dropDuplicates, dropna, drop, dtypes, exceptAll, except, explain, filter, first, gapplyCollect, gapply, getNumPartitions, group_by, head, hint, histogram, insertInto, intersectAll, intersect, isLocal, isStreaming, join, limit, localCheckpoint, merge, mutate, ncol, persist, printSchema, randomSplit, rbind, rename, repartitionByRange, 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

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## Not run: 
sparkR.session()
path <- "path/to/file.json"
df <- read.json(path)
count(df)

## End(Not run)

SparkR documentation built on Sept. 2, 2019, 5:05 p.m.