小编Geo*_*ona的帖子

我使用 kafka-connect-jdbc-4.0.0.jar 和 postgresql-9.4-1206-jdbc41.jar

kafka connect的connector配置

{
  "connector.class": "io.confluent.connect.jdbc.JdbcSourceConnector",
  "mode": "timestamp",
  "timestamp.column.name": "updated_at",
  "topic.prefix": "streaming.data.v2",
  "connection.password": "password",
  "connection.user": "user",
  "schema.pattern": "test",
  "query": "select * from view_source",
  "connection.url": "jdbc:postgresql://host:5432/test?currentSchema=test"
}

我已经使用 jdbc 驱动程序配置了两个连接器一个源和另一个接收器，针对 postgresql 数据库（“PostgreSQL 9.6.9”）一切正常

我对连接器如何收集源数据有疑问，查看日志我看到执行查询之间存在 21 秒的时间差

11/1/2019 9:20:18[2019-01-11 08:20:18,985] DEBUG Checking for next block of results from TimestampIncrementingTableQuerier{name='null', query='select * from view_source', topicPrefix='streaming.data.v2', timestampColumn='updated_at', incrementingColumn='null'} (io.confluent.connect.jdbc.source.JdbcSourceTask)
11/1/2019 9:20:18[2019-01-11 08:20:18,985] DEBUG TimestampIncrementingTableQuerier{name='null', query='select * from view_source', topicPrefix='streaming.data.v2', timestampColumn='updated_at', incrementingColumn='null'} prepared SQL query: select * from view_source WHERE "updated_at" > …