JDBC

JDBC source connector

Description

Read external data source data through JDBC.

tip

Warn: for license compliance, you have to provide database driver yourself, copy to $SEATNUNNEL_HOME/lib/ directory in order to make them work.

e.g. If you use MySQL, should download and copy mysql-connector-java-xxx.jar to $SEATNUNNEL_HOME/lib/. For Spark/Flink, you should also copy it to $SPARK_HOME/jars/ or $FLINK_HOME/lib/.

Key features

• batch
• stream
• exactly-once
• column projection

supports query SQL and can achieve projection effect.

• parallelism
• support user-defined split

Options

name	type	required	default value
url	String	Yes	-
driver	String	Yes	-
user	String	No	-
password	String	No	-
query	String	Yes	-
connection_check_timeout_sec	Int	No	30
partition_column	String	No	-
partition_upper_bound	Long	No	-
partition_lower_bound	Long	No	-
partition_num	Int	No	job parallelism
fetch_size	Int	No	0
common-options		No	-

driver [string]

The jdbc class name used to connect to the remote data source, if you use MySQL the value is com.mysql.cj.jdbc.Driver.

user [string]

userName

password [string]

password

url [string]

The URL of the JDBC connection. Refer to a case: jdbc:postgresql://localhost/test

query [string]

Query statement

connection_check_timeout_sec [int]

The time in seconds to wait for the database operation used to validate the connection to complete.

partition_column [string]

The column name for parallelism's partition, only support numeric type.

partition_upper_bound [long]

The partition_column max value for scan, if not set SeaTunnel will query database get max value.

partition_lower_bound [long]

The partition_column min value for scan, if not set SeaTunnel will query database get min value.

partition_num [int]

The number of partition count, only support positive integer. default value is job parallelism

fetch_size [int]

For queries that return a large number of objects, you can configure the row fetch size used in the query to improve performance by reducing the number database hits required to satisfy the selection criteria. Zero means use jdbc default value.

common options

Source plugin common parameters, please refer to Source Common Options for details.

tips

If partition_column is not set, it will run in single concurrency, and if partition_column is set, it will be executed in parallel according to the concurrency of tasks.

appendix

there are some reference value for params above.

datasource	driver	url	maven
mysql	com.mysql.cj.jdbc.Driver	jdbc:mysql://localhost:3306/test	https://mvnrepository.com/artifact/mysql/mysql-connector-java
postgresql	org.postgresql.Driver	jdbc:postgresql://localhost:5432/postgres	https://mvnrepository.com/artifact/org.postgresql/postgresql
dm	dm.jdbc.driver.DmDriver	jdbc:dm://localhost:5236	https://mvnrepository.com/artifact/com.dameng/DmJdbcDriver18
phoenix	org.apache.phoenix.queryserver.client.Driver	jdbc:phoenix:thin:url=http://localhost:8765;serialization=PROTOBUF	https://mvnrepository.com/artifact/com.aliyun.phoenix/ali-phoenix-shaded-thin-client
sqlserver	com.microsoft.sqlserver.jdbc.SQLServerDriver	jdbc:sqlserver://localhost:1433	https://mvnrepository.com/artifact/com.microsoft.sqlserver/mssql-jdbc
oracle	oracle.jdbc.OracleDriver	jdbc:oracle:thin:@localhost:1521/xepdb1	https://mvnrepository.com/artifact/com.oracle.database.jdbc/ojdbc8
sqlite	org.sqlite.JDBC	jdbc:sqlite:test.db	https://mvnrepository.com/artifact/org.xerial/sqlite-jdbc
gbase8a	com.gbase.jdbc.Driver	jdbc:gbase://e2e_gbase8aDb:5258/test	https://www.gbase8.cn/wp-content/uploads/2020/10/gbase-connector-java-8.3.81.53-build55.5.7-bin_min_mix.jar
starrocks	com.mysql.cj.jdbc.Driver	jdbc:mysql://localhost:3306/test	https://mvnrepository.com/artifact/mysql/mysql-connector-java
db2	com.ibm.db2.jcc.DB2Driver	jdbc:db2://localhost:50000/testdb	https://mvnrepository.com/artifact/com.ibm.db2.jcc/db2jcc/db2jcc4
tablestore	com.alicloud.openservices.tablestore.jdbc.OTSDriver	"jdbc:ots:http s://myinstance.cn-hangzhou.ots.aliyuncs.com/myinstance"	https://mvnrepository.com/artifact/com.aliyun.openservices/tablestore-jdbc
saphana	com.sap.db.jdbc.Driver	jdbc:sap://localhost:39015	https://mvnrepository.com/artifact/com.sap.cloud.db.jdbc/ngdbc
doris	com.mysql.cj.jdbc.Driver	jdbc:mysql://localhost:3306/test	https://mvnrepository.com/artifact/mysql/mysql-connector-java
teradata	com.teradata.jdbc.TeraDriver	jdbc:teradata://localhost/DBS_PORT=1025,DATABASE=test	https://mvnrepository.com/artifact/com.teradata.jdbc/terajdbc
Snowflake	net.snowflake.client.jdbc.SnowflakeDriver	jdbc❄️//<account_name>.snowflakecomputing.com	https://mvnrepository.com/artifact/net.snowflake/snowflake-jdbc
Redshift	com.amazon.redshift.jdbc42.Driver	jdbc:redshift://localhost:5439/testdb?defaultRowFetchSize=1000	https://mvnrepository.com/artifact/com.amazon.redshift/redshift-jdbc42
Vertica	com.vertica.jdbc.Driver	jdbc:vertica://localhost:5433	https://repo1.maven.org/maven2/com/vertica/jdbc/vertica-jdbc/12.0.3-0/vertica-jdbc-12.0.3-0.jar

Example

simple:

Jdbc {
    url = "jdbc:mysql://localhost/test?serverTimezone=GMT%2b8"
    driver = "com.mysql.cj.jdbc.Driver"
    connection_check_timeout_sec = 100
    user = "root"
    password = "123456"
    query = "select * from type_bin"
}

parallel:

Jdbc {
    url = "jdbc:mysql://localhost/test?serverTimezone=GMT%2b8"
    driver = "com.mysql.cj.jdbc.Driver"
    connection_check_timeout_sec = 100
    user = "root"
    password = "123456"
    query = "select * from type_bin"
    partition_column = "id"
    partition_num = 10
}

Changelog

2.2.0-beta 2022-09-26

• Add ClickHouse Source Connector

2.3.0-beta 2022-10-20

• [Feature] Support Phoenix JDBC Source (2499)
• [Feature] Support SQL Server JDBC Source (2646)
• [Feature] Support Oracle JDBC Source (2550)
• [Feature] Support StarRocks JDBC Source (3060)
• [Feature] Support GBase8a JDBC Source (3026)
• [Feature] Support DB2 JDBC Source (2410)

next version

• [BugFix] Fix jdbc split bug (3220)
• [Feature] Support Sqlite JDBC Source (3089)
• [Feature] Support Tablestore Source (3309)
• [Feature] Support Teradata JDBC　Source (3362)
• [Feature] Support JDBC Fetch Size Config (3478)
• [Feature] Support Doris JDBC Source (3586)
• [Feature] Support Redshift JDBC Sink(#3615)
• [BugFix] Fix jdbc connection reset bug (3670)
• [Improve] Add Vertica connector(#4303)