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