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No, SeaTunnel supports Zeta, Spark, and Flink as options for the integration engine. You can choose one of them. The community especially recommends using Zeta, a new-generation high-performance engine specifically built for integration scenarios.
The community provides the most support for Zeta, which also has richer features.
SeaTunnel supports a variety of data sources and destinations. You can find the detailed list on the official website:
Currently, CDC is supported for MongoDB CDC, MySQL CDC, OpenGauss CDC, Oracle CDC, PostgreSQL CDC, SQL Server CDC, TiDB CDC, etc. For more details, refer to the Source documentation.
Yes, it is supported by subscribing to the MySQL binlog and parsing the binlog on the synchronization server.
You need SELECT permission on the relevant databases and tables.
GRANT SHOW DATABASES, REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'username'@'host' IDENTIFIED BY 'password'; FLUSH PRIVILEGES;
[mysqld] log-bin=/var/log/mysql/mysql-bin.log expire_logs_days = 7 binlog_format = ROW binlog_row_image=full
service mysql restart
Using SQL Server CDC as a data source requires enabling the MS-CDC feature in SQL Server. The steps are as follows:
EXEC xp_servicecontrol N'querystate', N'SQLServerAGENT'; -- If the result is "running," it means the agent is enabled. Otherwise, it needs to be started manually.
/opt/mssql/bin/mssql-conf setup The result that is returned is as follows: 1) Evaluation (free, no production use rights, 180-day limit) 2) Developer (free, no production use rights) 3) Express (free) 4) Web (PAID) 5) Standard (PAID) 6) Enterprise (PAID) 7) Enterprise Core (PAID) 8) I bought a license through a retail sales channel and have a product key to enter.
Choose the appropriate option based on your situation.
Select option 2 (Developer) for a free version that includes the agent. Enable the agent by running:
/opt/mssql/bin/mssql-conf set sqlagent.enabled true
If using Windows, enable SQL Server Agent (e.g., for SQL Server 2008):
GRANT SHOW DATABASES, REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'username'@'host' IDENTIFIED BY 'password'; FLUSH PRIVILEGES;
[mysqld] log-bin=/var/log/mysql/mysql-bin.log expire_logs_days = 7 binlog_format = ROW binlog_row_image=full
service mysql restart
No, CDC synchronization is not supported for tables without primary keys. This is because, if there are two identical rows upstream and one is deleted or modified, it would be impossible to distinguish which row should be deleted or modified downstream, potentially resulting in both rows being affected.
This error occurs when the replication slots in PostgreSQL are full and need to be released. Modify the postgresql.conf file to increase max_wal_senders and max_replication_slots, then restart the PostgreSQL service using the command:
EXEC xp_servicecontrol N'querystate', N'SQLServerAGENT'; -- If the result is "running," it means the agent is enabled. Otherwise, it needs to be started manually.
Example configuration:
/opt/mssql/bin/mssql-conf setup The result that is returned is as follows: 1) Evaluation (free, no production use rights, 180-day limit) 2) Developer (free, no production use rights) 3) Express (free) 4) Web (PAID) 5) Standard (PAID) 6) Enterprise (PAID) 7) Enterprise Core (PAID) 8) I bought a license through a retail sales channel and have a product key to enter.
If you encounter an issue while using SeaTunnel that you cannot resolve, you can:
Do you want to know how to declare a variable in a SeaTunnel configuration and dynamically replace its value at runtime? This feature is often used in both scheduled and non-scheduled offline processing as a placeholder for variables such as time and date. Here’s how to do it:
Declare a variable name in the configuration. Below is an example of a SQL transformation (in fact, any value in key = value format can use variable substitution):
/opt/mssql/bin/mssql-conf set sqlagent.enabled true
To run SeaTunnel in Zeta Local mode, use the following command:
Open "SQL Server Configuration Manager" from the Start menu, navigate to "SQL Server Services," right-click the "SQL Server Agent" instance, and start it.
Use the -i or --variable parameter followed by key=value to specify the variable's value, ensuring that key matches the variable name in the configuration. For more details, refer to: https://seatunnel.apache.org/docs/concept/config
To break a long text into multiple lines, use triple double quotes to indicate the start and end:
USE TestDB; -- Replace with your actual database name EXEC sys.sp_cdc_enable_db; -- Check if the database has CDC enabled SELECT name, is_cdc_enabled FROM sys.databases WHERE name = 'database'; -- Replace with the name of your database
Variable substitution in multi-line text is tricky, as variables cannot be enclosed within triple double quotes:
USE TestDB; -- Replace with your actual database name EXEC sys.sp_cdc_enable_table @source_schema = 'dbo', @source_name = 'table', -- Replace with the table name @role_name = NULL, @capture_instance = 'table'; -- Replace with a unique capture instance name -- Check if the table has CDC enabled SELECT name, is_tracked_by_cdc FROM sys.tables WHERE name = 'table'; -- Replace with the table name
See the issue for more information: lightbend/config#456.
The seatunnel-e2e log4j configuration file is located at seatunnel-e2e/seatunnel-e2e-common/src/test/resources/log4j2.properties. You can modify logging parameters directly in the configuration file.
For example, to get more detailed E2E test logs, simply downgrade the rootLogger.level in the configuration file.
SeaTunnel has a well-abstracted and structured architecture design and code implementation, making it an excellent choice for learning big data architecture. You can start exploring and debugging the source code from the seatunnel-examples module: SeaTunnelEngineLocalExample.java. For more details, refer to: https://seatunnel.apache.org/docs/contribution/setup
No, you only need to focus on the interfaces related to source, sink, and transform. If you'd like to develop your own connector using SeaTunnel's API (Connector V2), refer to Connector Development Guide.
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