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Georger commented on FLINK-20617: --------------------------------- it seems not the problem , i have only use flink-connector-kafka-0.11_2.11 or flink-connector-kafka_2.11, the same result it only with application mode [~aljoscha] > Kafka Consumer Deserializer Exception on application mode > --------------------------------------------------------- > > Key: FLINK-20617 > URL: https://issues.apache.org/jira/browse/FLINK-20617 > Project: Flink > Issue Type: Bug > Components: Connectors / Kafka > Affects Versions: 1.11.2 > Environment: application mode > flink 1.11.2 with hadoop 2.6.0-cdh5.15.0 > Reporter: Georger > Priority: Critical > > Kafka source may has some issues on application mode > > when i run it with application mode on flink 1.11.2 it can't startup > the detail Excetion is: > org.apache.kafka.common.KafkaException: Failed to construct kafka consumer > at > org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:789) > at > org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:643) > at > org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:623) > at > org.apache.flink.streaming.connectors.kafka.internal.KafkaPartitionDiscoverer.initializeConnections(KafkaPartitionDiscoverer.java:58) > at > org.apache.flink.streaming.connectors.kafka.internals.AbstractPartitionDiscoverer.open(AbstractPartitionDiscoverer.java:94) > at > org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase.open(FlinkKafkaConsumerBase.java:550) > at > org.apache.flink.api.common.functions.util.FunctionUtils.openFunction(FunctionUtils.java:36) > at > org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.open(AbstractUdfStreamOperator.java:102) > at > org.apache.flink.streaming.runtime.tasks.OperatorChain.initializeStateAndOpenOperators(OperatorChain.java:291) > at > org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$beforeInvoke$0(StreamTask.java:479) > at > org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.runThrowing(StreamTaskActionExecutor.java:92) > at > org.apache.flink.streaming.runtime.tasks.StreamTask.beforeInvoke(StreamTask.java:475) > at > org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:528) > at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:721) > at org.apache.flink.runtime.taskmanager.Task.run(Task.java:546) > at java.lang.Thread.run(Thread.java:745) > Caused by: org.apache.kafka.common.KafkaException: > org.apache.kafka.common.serialization.ByteArrayDeserializer is not an > instance of org.apache.kafka.common.serialization.Deserializer > at > org.apache.kafka.common.config.AbstractConfig.getConfiguredInstance(AbstractConfig.java:263) > at > org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:688) > ... 15 more > The pom is: > <dependency> > <groupId>org.apache.flink</groupId> > <artifactId>flink-connector-kafka_2.11</artifactId> > <version>${flink.version}</version> > <exclusions> > <exclusion> > <groupId>org.slf4j</groupId> > <artifactId>slf4j-api</artifactId> > </exclusion> > <exclusion> > <groupId>org.apache.kafka</groupId> > <artifactId>kafka-clients</artifactId> > </exclusion> > </exclusions> > </dependency> > <dependency> > <groupId>org.apache.kafka</groupId> > <artifactId>kafka-clients</artifactId> > <version>1.0.1</version> > </dependency> -- This message was sent by Atlassian Jira (v8.3.4#803005)