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Hang Ruan commented on FLINK-23847: ----------------------------------- The _checkNotNull_ method will throw a _NullPointerException_ with the given message, maybe we don't need extra information to explain it. > [Kafka] Error msg are obscure when KafkaConsumer init, valueDeserializer is > null > -------------------------------------------------------------------------------- > > Key: FLINK-23847 > URL: https://issues.apache.org/jira/browse/FLINK-23847 > Project: Flink > Issue Type: Bug > Components: Connectors / Kafka > Reporter: camilesing > Priority: Critical > Labels: pull-request-available > > As the title, i think the msg can be clearer. > > _this.deserializer = checkNotNull(deserializer, "valueDeserializer");_ > _->_ > _this.deserializer = checkNotNull(deserializer, "valueDeserializer cannot be > null");_ -- This message was sent by Atlassian Jira (v8.3.4#803005)