File Writer Activity

Writes specified view as file to target path. Optimal for writing to HDFS, FTP and Local file systems.

Parameters

Name	Description	Type	Default
Title	Title of the activity. Its displayed on the designer.	text
View	Name of the DataRow view that is going to be written into the file.	text
Path	File path. Please see below for supported file systems.	text
Format	File format. Please see below for supported file formats.	enum
Partition By	List of columns to partition the output by.	enum	error
Mode	Write mode. Please see blow for list modes and their meanings.	enum	error
Options	Additional options (e.g. delimiter for CSV file could be specified as [delimiter,\t] if file is tab delimited	key-value

Supported File Sources

Name	Path Template
Local File System	file://<path>
HDFS	hdfs://<namenodehost>/<path>
FTP	ftp://<username>:<password>@<host>/<path>

Supported File Formats

Name	Description
Parquet	Apache Parquet is a columnar storage format.
ORC	ORC is also columnar storage format.
Avro	Apache Avro is a data serialization format.
CSV	CSV is a delimited text file format.
JSON	JSON is a lightweight data-interchange format.

Supported Write Modes

Name	Description
error	Fail if file already exists.
append	Append to existing file or create new.
overwrite	Overwrite existing file or create new.
ignore	Ignore if file already exists or create new.