Schema change events of excluded databases are discarded

Before starting the connector make sure you have a database to be excluded with a table in it (I'll use  db_excludetest.t1 in my examples). Start the connector. In my case I have the following configuration: name=debezium-mysql-connector connector.class=io.debezium.connector.mysql.MySqlConnector database.hostname=localhost database.port=3306 database.user=mysqluser database.password=mysqlpw database.server.id=184054 database.server.name=mysqlsrvr database.history.kafka.bootstrap.servers=localhost:9092 database.history.kafka.topic=debezium-mysql-connector.dbhistory include.schema.changes= false Please note that database.history.store.only.monitored.tables.ddl is not specified, which means the default value is used. Issue the following DDL to make sure schema change events are stored in dbhistory prior to the database exclusion: ALTER TABLE db_excludetest.t1 ADD c1 varchar (100) NULL ; Observe a new message in dbhistory: { "source" : { "server" : "mysqlsrvr" }, "position" : { "transaction_id" : null , "ts_sec" : 1623412247, "file" : "mysql-bin.000004" , "pos" : 4547, "server_id" : 112233 }, "databaseName" : "db_excludetest" , "ddl" : "ALTER TABLE db_excludetest.t1 ADD c1 varchar(100) NULL" , "tableChanges" : [ { "type" : "ALTER" , "id" : "\" db_excludetest\ ".\" t1\"", "table" : { "defaultCharsetName" : "latin1" , "primaryKeyColumnNames" : [ "id" ], "columns" : [ { "name" : "id" , "jdbcType" : 4, "typeName" : "INT UNSIGNED" , "typeExpression" : "INT UNSIGNED" , "charsetName" : null , "length" : 10, "position" : 1, "optional" : false , "autoIncremented" : true , "generated" : true }, { "name" : "c1" , "jdbcType" : 12, "typeName" : "VARCHAR" , "typeExpression" : "VARCHAR" , "charsetName" : "latin1" , "length" : 100, "position" : 2, "optional" : true , "autoIncremented" : false , "generated" : false } ] } } ] } Add the following line to the connector configuration and restart the connector: database.exclude.list=db_excludetest Issue another DDL: ALTER TABLE db_excludetest.t1 ADD c2 varchar (100) NULL ; Observe that there is no new messages in dbhistory.