Kafka Consumer??????????????

Fri, 29 May 2020 01:17:13 -0700 

Hi??
????????Kafka Consumer????????????
????kafka consumer job ??????Flink session 
cluster????????????????????????????Flink per-job cluster 
????kafka??????????????????????????
????flink??????1.10,kafka??????kafka_2.12-2.1.0????????consumer??????val data = 
env.addSource(new FlinkKafkaConsumer[String](topic, new SimpleStringSchema(), 
properties))
2020-05-27 17:05:22
org.apache.kafka.common.KafkaException: Failed to construct kafka consumer
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.<init&gt;(KafkaConsumer.java:811)
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.<init&gt;(KafkaConsumer.java:659)
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.<init&gt;(KafkaConsumer.java:639)
        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:505)
        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.StreamTask.initializeStateAndOpen(StreamTask.java:1007)
        at 
org.apache.flink.streaming.runtime.tasks.StreamTask.lambda$beforeInvoke$0(StreamTask.java:454)
        at 
org.apache.flink.streaming.runtime.tasks.StreamTaskActionExecutor$SynchronizedStreamTaskActionExecutor.runThrowing(StreamTaskActionExecutor.java:94)
        at 
org.apache.flink.streaming.runtime.tasks.StreamTask.beforeInvoke(StreamTask.java:449)
        at 
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:461)
        at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:707)
        at org.apache.flink.runtime.taskmanager.Task.run(Task.java:532)
        at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.kafka.common.KafkaException: 
org.apache.flink.kafka.shaded.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:304)
        at 
org.apache.kafka.clients.consumer.KafkaConsumer.<init&gt;(KafkaConsumer.java:705)
        ... 15 more

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