如果所有源数据库中的主键相同，我们可以为多个源数据库制作单个 JDBC 接收器连接器吗？

Question

Below is my JDBC Sink Connector Configuration Properties.

    "connector.class": "io.confluent.connect.jdbc.JdbcSinkConnector",
    "transforms.dropPrefix.replacement": "$1",
    "table.name.format": "kafka_${topic}",
    "connection.password": "********",
    "tasks.max": "3",
    "topics": "aiq.db1.Test1,aiq.db1.Test2,aiq.db2.Topic1,aiq.db2.Topic2",
    "batch.size": "3000",
    "transforms": "dropPrefix",
    "transforms.dropPrefix.regex": "aiq.(.*)",
    "transforms.dropPrefix.type": "org.apache.kafka.connect.transforms.RegexRouter",
    "value.converter.schema.registry.url": "http://localhost:8081",
    "value.converter.value.subject.name.strategy": "io.confluent.kafka.serializers.subject.RecordNameStrategy",
    "auto.evolve": "true",
    "connection.user": "admin",
    "name": "MSSQL_jdbc_sink_connect",
    "errors.tolerance": "all",
    "auto.create": "true",
    "value.converter": "io.confluent.connect.avro.AvroConverter",
    "connection.url": "jdbc:sqlserver://mssql",
    "insert.mode": "upsert",
    "key.converter": "io.confluent.connect.avro.AvroConverter",
    "key.converter.schema.registry.url": "http://localhost:8081",
    "pk.mode": "record_value",
    "pk.fields": "id"

If I used this then connector is looking for db1 or db2, which is source db and giving this error.

com.microsoft.sqlserver.jdbc.SQLServerException: Database 'db2' does not exist. Make sure that the name is entered correctly.

at io.confluent.connect.jdbc.sink.JdbcSinkTask.getAllMessagesException(JdbcSinkTask.java:150)
at io.confluent.connect.jdbc.sink.JdbcSinkTask.put(JdbcSinkTask.java:102)
... 11 more
[2022-01-25 06:09:09,582] WARN Write of 500 records failed, remainingRetries=10 (io.confluent.connect.jdbc.sink.JdbcSinkTask:92)
com.microsoft.sqlserver.jdbc.SQLServerException: Database 'db2' does not exist. Make sure that the name is entered correctly.

Please let me know Can I create a JDBC sink connector which uses more than one databases for source topic. If this scenario is possible then How can I achieve this by using JDBC Sink Connector?

Answer 1

AFAIK, the connection.url can only refer to one database at a time, for an authenticated user to that database.

If you need to write different topics to different databases, copy your connector config, and change the appropriate configs