File

Sink plugin : File [Flink]

Description

Write data to the file system

Options

name	type	required	default value
format	string	yes	-
path	string	yes	-
path_time_format	string	no	yyyyMMddHHmmss
write_mode	string	no	-
common-options	string	no	-
parallelism	int	no	-

format [string]

Currently, csv , json , and text are supported. The streaming mode currently only supports text

path [string]

The file path is required. The hdfs file starts with hdfs:// , and the local file starts with file://, we can add the variable ${now} or ${uuid} in the path, like hdfs:///test_${uuid}_${now}.txt, ${now} represents the current time, and its format can be defined by specifying the option path_time_format

path_time_format [string]

When the format in the path parameter is xxxx-${now} , path_time_format can specify the time format of the path, and the default value is yyyy.MM.dd . The commonly used time formats are listed as follows:

Symbol	Description
y	Year
M	Month
d	Day of month
H	Hour in day (0-23)
m	Minute in hour
s	Second in minute

See Java SimpleDateFormat for detailed time format syntax.

write_mode [string]

• NO_OVERWRITE

  • No overwrite, there is an error in the path

• OVERWRITE

  • Overwrite, delete and then write if the path exists

common options [string]

Sink plugin common parameters, please refer to Sink Plugin for details

parallelism [Int]

The parallelism of an individual operator, for FileSink

Examples

  FileSink {
    format = "json"
    path = "hdfs://localhost:9000/flink/output/"
    write_mode = "OVERWRITE"
  }