flink.partition-discovery.interval-millis这个配置在Flink中是生效的,flink kafka connectors
会根据配置的时间去获取kafka topic的分区信息,代码实现见: FlinkKafkaConsumerBase
中的createAndStartDiscoveryLoop方法。
19:38:37,557 WARN org.apache.kafka.clients.consumer.ConsumerConfig
[] - The configuration 'flink.partition-discovery.interval-millis' was
supplied but isn't a known config.
这个WARN是kafka报出来的,意思是说kafka收到了提供这个参数,但是kafka并不认识。
这个参数并不是给kafka用的,只不过在获取kafka分区的时候需要创建一个KafkaConsumer实例,把设置的参数也一并传给了Kafka。
对应的Warn位置为KafkaConsumer构造函数里面调用的config.logUnused()方法。
在 2021/4/18 下午7:45,“lp”<973182...@qq.com> 写入:
flink1.12正常程序中,有如下告警:
19:38:37,557 WARN org.apache.kafka.clients.consumer.ConsumerConfig
[] - The configuration 'flink.partition-discovery.interval-millis' was
supplied but isn't a known config.
我有一行如下配置:
properties.setProperty(FlinkKafkaConsumerBase.KEY_PARTITION_DISCOVERY_INTERVAL_MILLIS,10);
根据官网https://ci.apache.org/projects/flink/flink-docs-stable/dev/connectors/kafka.html#topic-discovery介绍:
By default, partition discovery is disabled. To enable it, set a
non-negative value for flink.partition-discovery.interval-millis in the
provided properties config, representing the discovery interval in
milliseconds.
上述配置应该是合法的,但是为何会报如此警告呢?
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