import ChangeLog from ‘../changelog/connector-file-s3.md’;

S3File

S3 File Source Connector

Support Those Engines

Spark
Flink
SeaTunnel Zeta

Key Features

[x] batch
[ ] stream
[x] multimodal
Use binary file format to read and write files in any format, such as videos, pictures, etc. In short, any files can be synchronized to the target place.
[x] exactly-once
Read all the data in a split in a pollNext call. What splits are read will be saved in snapshot.
[x] column projection
[x] parallelism
[ ] support user-defined split
[x] file format type
- [x] text
- [x] csv
- [x] parquet
- [x] orc
- [x] json
- [x] excel
- [x] xml
- [x] binary
- [x] markdown

Description

Read data from aws s3 file system.

Supported DataSource Info

Datasource	Supported versions
S3	current

Dependency

If you use spark/flink, In order to use this connector, You must ensure your spark/flink cluster already integrated hadoop. The tested hadoop version is 2.x.
If you use SeaTunnel Zeta, It automatically integrated the hadoop jar when you download and install SeaTunnel Zeta. You can check the jar package under ${SEATUNNEL_HOME}/lib to confirm this.
To use this connector you need put hadoop-aws-3.1.4.jar and aws-java-sdk-bundle-1.12.692.jar in ${SEATUNNEL_HOME}/lib dir.

Data Type Mapping

Data type mapping is related to the type of file being read, We supported as the following file types:

text csv parquet orc json excel xml

JSON File Type

If you assign file type to json, you should also assign schema option to tell connector how to parse data to the row you want.

For example:

upstream data is the following:


{"code":  200, "data":  "get success", "success":  true}

You can also save multiple pieces of data in one file and split them by newline:


{"code":  200, "data":  "get success", "success":  true}
{"code":  300, "data":  "get failed", "success":  false}

you should assign schema as the following:


schema {
    fields {
        code = int
        data = string
        success = boolean
    }
}

connector will generate data as the following:

code	data	success
200	get success	true

Text Or CSV File Type

If you set the file_format_type to text,excel,csv,xml. Then it's required to set the schema field to tell connector how to parse data to the row.

If you set the schema field, you should also set the option field_delimiter, except the file_format_type is csv, xml, excel

you can set schema and delimiter as the following:


field_delimiter = "#"
schema {
    fields {
        name = string
        age = int
        gender = string 
    }
}

connector will generate data as the following:

name	age	gender
tyrantlucifer	26	male

Orc File Type

If you assign file type to parquet orc, schema option not required, connector can find the schema of upstream data automatically.

Orc Data type	SeaTunnel Data type
BOOLEAN	BOOLEAN
INT	INT
BYTE	BYTE
SHORT	SHORT
LONG	LONG
FLOAT	FLOAT
DOUBLE	DOUBLE
BINARY	BINARY
STRING VARCHAR CHAR	STRING
DATE	LOCAL_DATE_TYPE
TIMESTAMP	LOCAL_DATE_TIME_TYPE
DECIMAL	DECIMAL
LIST(STRING)	STRING_ARRAY_TYPE
LIST(BOOLEAN)	BOOLEAN_ARRAY_TYPE
LIST(TINYINT)	BYTE_ARRAY_TYPE
LIST(SMALLINT)	SHORT_ARRAY_TYPE
LIST(INT)	INT_ARRAY_TYPE
LIST(BIGINT)	LONG_ARRAY_TYPE
LIST(FLOAT)	FLOAT_ARRAY_TYPE
LIST(DOUBLE)	DOUBLE_ARRAY_TYPE
Map<K,V>	MapType, This type of K and V will transform to SeaTunnel type
STRUCT	SeaTunnelRowType

Parquet File Type

If you assign file type to parquet orc, schema option not required, connector can find the schema of upstream data automatically.

Parquet Data type	SeaTunnel Data type
INT_8	BYTE
INT_16	SHORT
DATE	DATE
TIMESTAMP_MILLIS	TIMESTAMP
INT64	LONG
INT96	TIMESTAMP
BINARY	BYTES
FLOAT	FLOAT
DOUBLE	DOUBLE
BOOLEAN	BOOLEAN
FIXED_LEN_BYTE_ARRAY	TIMESTAMP DECIMAL
DECIMAL	DECIMAL
LIST(STRING)	STRING_ARRAY_TYPE
LIST(BOOLEAN)	BOOLEAN_ARRAY_TYPE
LIST(TINYINT)	BYTE_ARRAY_TYPE
LIST(SMALLINT)	SHORT_ARRAY_TYPE
LIST(INT)	INT_ARRAY_TYPE
LIST(BIGINT)	LONG_ARRAY_TYPE
LIST(FLOAT)	FLOAT_ARRAY_TYPE
LIST(DOUBLE)	DOUBLE_ARRAY_TYPE
Map<K,V>	MapType, This type of K and V will transform to SeaTunnel type
STRUCT	SeaTunnelRowType

Options

name	type	required	default value	Description
path	string	yes	-	The s3 path that needs to be read can have sub paths, but the sub paths need to meet certain format requirements. Specific requirements can be referred to “parse_partition_from_path” option
file_format_type	string	yes	-	File type, supported as the following file types: `text` `csv` `parquet` `orc` `json` `excel` `xml` `binary` `markdown`
bucket	string	yes	-	The bucket address of s3 file system, for example: `s3n://seatunnel-test`, if you use `s3a` protocol, this parameter should be `s3a://seatunnel-test`.
fs.s3a.endpoint	string	yes	-	fs s3a endpoint
fs.s3a.aws.credentials.provider	string	yes	com.amazonaws.auth.InstanceProfileCredentialsProvider	The way to authenticate s3a. We only support `org.apache.hadoop.fs.s3a.SimpleAWSCredentialsProvider` and `com.amazonaws.auth.InstanceProfileCredentialsProvider` now. More information about the credential provider you can see Hadoop AWS Document
read_columns	list	no	-	The read column list of the data source, user can use it to implement field projection. The file type supported column projection as the following shown: `text` `csv` `parquet` `orc` `json` `excel` `xml` . If the user wants to use this feature when reading `text` `json` `csv` files, the “schema” option must be configured.
access_key	string	no	-	Only used when `fs.s3a.aws.credentials.provider = org.apache.hadoop.fs.s3a.SimpleAWSCredentialsProvider`
secret_key	string	no	-	Only used when `fs.s3a.aws.credentials.provider = org.apache.hadoop.fs.s3a.SimpleAWSCredentialsProvider`
hadoop_s3_properties	map	no	-	If you need to add other option, you could add it here and refer to this link
delimiter/field_delimiter	string	no	\001 for text and , for csv	Field delimiter, used to tell connector how to slice and dice fields when reading text files. Default `\001`, the same as hive's default delimiter.
row_delimiter	string	no	\n	Row delimiter, used to tell connector how to slice and dice rows when reading text files. Default `\n`.
parse_partition_from_path	boolean	no	true	Control whether parse the partition keys and values from file path. For example if you read a file from path `s3n://hadoop-cluster/tmp/seatunnel/parquet/name=tyrantlucifer/age=26`. Every record data from file will be added these two fields: name=“tyrantlucifer”, age=16
date_format	string	no	yyyy-MM-dd	Date type format, used to tell connector how to convert string to date, supported as the following formats:`yyyy-MM-dd` `yyyy.MM.dd` `yyyy/MM/dd`. default `yyyy-MM-dd`
datetime_format	string	no	yyyy-MM-dd HH:mm:ss	Datetime type format, used to tell connector how to convert string to datetime, supported as the following formats:`yyyy-MM-dd HH:mm:ss` `yyyy.MM.dd HH:mm:ss` `yyyy/MM/dd HH:mm:ss` `yyyyMMddHHmmss`
time_format	string	no	HH:mm:ss	Time type format, used to tell connector how to convert string to time, supported as the following formats:`HH:mm:ss` `HH:mm:ss.SSS`
skip_header_row_number	long	no	0	Skip the first few lines, but only for the txt and csv. For example, set like following:`skip_header_row_number = 2`. Then SeaTunnel will skip the first 2 lines from source files
csv_use_header_line	boolean	no	false	Whether to use the header line to parse the file, only used when the file_format is `csv` and the file contains the header line that match RFC 4180
schema	config	no	-	The schema of upstream data.
sheet_name	string	no	-	Reader the sheet of the workbook,Only used when file_format is excel.
xml_row_tag	string	no	-	Specifies the tag name of the data rows within the XML file, only valid for XML files.
xml_use_attr_format	boolean	no	-	Specifies whether to process data using the tag attribute format, only valid for XML files.
csv_use_header_line	boolean	no	false	Whether to use the header line to parse the file, only used when the file_format is `csv` and the file contains the header line that match RFC 4180
compress_codec	string	no	none
archive_compress_codec	string	no	none
encoding	string	no	UTF-8
null_format	string	no	-	Only used when file_format_type is text. null_format to define which strings can be represented as null. e.g: `\N`
binary_chunk_size	int	no	1024	Only used when file_format_type is binary. The chunk size (in bytes) for reading binary files. Default is 1024 bytes. Larger values may improve performance for large files but use more memory.
binary_complete_file_mode	boolean	no	false	Only used when file_format_type is binary. Whether to read the complete file as a single chunk instead of splitting into chunks. When enabled, the entire file content will be read into memory at once. Default is false.
file_filter_pattern	string	no		Filter pattern, which used for filtering files.
filename_extension	string	no	-	Filter filename extension, which used for filtering files with specific extension. Example: `csv` `.txt` `json` `.xml`.
common-options		no	-	Source plugin common parameters, please refer to Source Common Options for details.

file_format_type [string]

File type, supported as the following file types:

text csv parquet orc json excel xml binary markdown

If you assign file type to markdown, SeaTunnel can parse markdown files and extract structured data. The markdown parser extracts various elements including headings, paragraphs, lists, code blocks, tables, and more. Each element is converted to a row with the following schema:

element_id: Unique identifier for the element
element_type: Type of the element (Heading, Paragraph, ListItem, etc.)
heading_level: Level of heading (1-6, null for non-heading elements)
text: Text content of the element
page_number: Page number (default: 1)
position_index: Position index within the document
parent_id: ID of the parent element
child_ids: Comma-separated list of child element IDs

Note: Markdown format only supports reading, not writing.

delimiter/field_delimiter [string]

delimiter parameter will deprecate after version 2.3.5, please use field_delimiter instead.

row_delimiter [string]

Only need to be configured when file_format is text

Row delimiter, used to tell connector how to slice and dice rows

default \n

file_filter_pattern [string]

Filter pattern, which used for filtering files.

The pattern follows standard regular expressions. For details, please refer to https://en.wikipedia.org/wiki/Regular_expression. There are some examples.

File Structure Example:

/data/seatunnel/20241001/report.txt
/data/seatunnel/20241007/abch202410.csv
/data/seatunnel/20241002/abcg202410.csv
/data/seatunnel/20241005/old_data.csv
/data/seatunnel/20241012/logo.png

Matching Rules Example:

Example 1: Match all .txt files，Regular Expression:

/data/seatunnel/20241001/.*\.txt

The result of this example matching is:

/data/seatunnel/20241001/report.txt

Example 2: Match all file starting with abc，Regular Expression:

/data/seatunnel/20241002/abc.*

The result of this example matching is:

/data/seatunnel/20241007/abch202410.csv
/data/seatunnel/20241002/abcg202410.csv

Example 3: Match all file starting with abc，And the fourth character is either h or g, the Regular Expression:

/data/seatunnel/20241007/abc[h,g].*

The result of this example matching is:

/data/seatunnel/20241007/abch202410.csv

Example 4: Match third level folders starting with 202410 and files ending with .csv, the Regular Expression:

/data/seatunnel/202410\d*/.*\.csv

The result of this example matching is:

/data/seatunnel/20241007/abch202410.csv
/data/seatunnel/20241002/abcg202410.csv
/data/seatunnel/20241005/old_data.csv

compress_codec [string]

The compress codec of files and the details that supported as the following shown:

txt: lzo none
json: lzo none
csv: lzo none
orc/parquet:
automatically recognizes the compression type, no additional settings required.

archive_compress_codec [string]

The compress codec of archive files and the details that supported as the following shown:

archive_compress_codec	file_format	archive_compress_suffix
ZIP	txt,json,excel,xml	.zip
TAR	txt,json,excel,xml	.tar
TAR_GZ	txt,json,excel,xml	.tar.gz
GZ	txt,json,excel,xml	.gz
NONE	all	.*

Note: gz compressed excel file needs to compress the original file or specify the file suffix, such as e2e.xls ->e2e_test.xls.gz

encoding [string]

Only used when file_format_type is json,text,csv,xml. The encoding of the file to read. This param will be parsed by Charset.forName(encoding).

binary_chunk_size [int]

Only used when file_format_type is binary.

The chunk size (in bytes) for reading binary files. Default is 1024 bytes. Larger values may improve performance for large files but use more memory.

binary_complete_file_mode [boolean]

Only used when file_format_type is binary.

Whether to read the complete file as a single chunk instead of splitting into chunks. When enabled, the entire file content will be read into memory at once. Default is false.

Example

In this example, We read data from s3 path s3a://seatunnel-test/seatunnel/text and the file type is orc in this path. We use org.apache.hadoop.fs.s3a.SimpleAWSCredentialsProvider to authentication so access_key and secret_key is required. All columns in the file will be read and send to sink.

# Defining the runtime environment
env {
  parallelism = 1
  job.mode = "BATCH"
}

source {
  S3File {
    path = "/seatunnel/text"
    fs.s3a.endpoint="s3.cn-north-1.amazonaws.com.cn"
    fs.s3a.aws.credentials.provider = "org.apache.hadoop.fs.s3a.SimpleAWSCredentialsProvider"
    access_key = "xxxxxxxxxxxxxxxxx"
    secret_key = "xxxxxxxxxxxxxxxxx"
    bucket = "s3a://seatunnel-test"
    file_format_type = "orc"
  }
}

transform {
  # If you would like to get more information about how to configure seatunnel and see full list of transform plugins,
    # please go to https://seatunnel.apache.org/docs/transform-v2
}

sink {
  Console {}
}

Use InstanceProfileCredentialsProvider to authentication The file type in S3 is json, so need config schema option.


  S3File {
    path = "/seatunnel/json"
    bucket = "s3a://seatunnel-test"
    fs.s3a.endpoint="s3.cn-north-1.amazonaws.com.cn"
    fs.s3a.aws.credentials.provider="com.amazonaws.auth.InstanceProfileCredentialsProvider"
    file_format_type = "json"
    schema {
      fields {
        id = int 
        name = string
      }
    }
  }

Use InstanceProfileCredentialsProvider to authentication The file type in S3 is json and has five fields (id, name, age, sex, type), so need config schema option. In this job, we only need send id and name column to mysql.

# Defining the runtime environment
env {
  parallelism = 1
  job.mode = "BATCH"
}

source {
  S3File {
    path = "/seatunnel/json"
    bucket = "s3a://seatunnel-test"
    fs.s3a.endpoint="s3.cn-north-1.amazonaws.com.cn"
    fs.s3a.aws.credentials.provider="com.amazonaws.auth.InstanceProfileCredentialsProvider"
    file_format_type = "json"
    read_columns = ["id", "name"]
    schema {
      fields {
        id = int 
        name = string
        age = int
        sex = int
        type = string
      }
    }
  }
}

transform {
  # If you would like to get more information about how to configure seatunnel and see full list of transform plugins,
    # please go to https://seatunnel.apache.org/docs/transform-v2
}

sink {
  Console {}
}

Filter File

env {
  parallelism = 1
  job.mode = "BATCH"
}

source {
  S3File {
    path = "/seatunnel/json"
    bucket = "s3a://seatunnel-test"
    fs.s3a.endpoint="s3.cn-north-1.amazonaws.com.cn"
    fs.s3a.aws.credentials.provider="com.amazonaws.auth.InstanceProfileCredentialsProvider"
    file_format_type = "json"
    read_columns = ["id", "name"]
    // file example abcD2024.csv
    file_filter_pattern = "abc[DX]*.*"
  }
}

sink {
  Console {
  }
}

S3File

Support Those Engines

Key Features

Description

Supported DataSource Info

Dependency

Data Type Mapping

JSON File Type

Text Or CSV File Type

Orc File Type

Parquet File Type

Options

file_format_type [string]

delimiter/field_delimiter [string]

row_delimiter [string]

file_filter_pattern [string]

compress_codec [string]

archive_compress_codec [string]

encoding [string]

binary_chunk_size [int]

binary_complete_file_mode [boolean]

Example

Filter File

Changelog