Read Text Stream

R/stream_data.R

stream_read_text

Description

Reads a text stream as a Spark dataframe stream.

Usage

stream_read_text(sc, path, name = NULL, options = list(), ...) 

Arguments

Arguments Description
sc A spark_connection.
path The path to the file. Needs to be accessible from the cluster. Supports the "hdfs://", "s3a://" and "file://" protocols.
name The name to assign to the newly generated stream.
options A list of strings with additional options.
Optional arguments; currently unused.

Examples

library(sparklyr)
sc <- spark_connect(master = "local") 
dir.create("text-in") 
writeLines("A text entry", "text-in/text.txt") 
text_path <- file.path("file://", getwd(), "text-in") 
stream <- stream_read_text(sc, text_path) %>% stream_write_text("text-out") 
stream_stop(stream) 

See Also

Other Spark stream serialization: stream_read_csv(), stream_read_delta(), stream_read_json(), stream_read_kafka(), stream_read_orc(), stream_read_parquet(), stream_read_socket(), stream_write_console(), stream_write_csv(), stream_write_delta(), stream_write_json(), stream_write_kafka(), stream_write_memory(), stream_write_orc(), stream_write_parquet(), stream_write_text()