Hi I am sending data using kafkaProducer API
imageRecord = new ProducerRecord<String, byte[]>(topic,messageKey, imageData); producer.send(imageRecord); And in flink program try to fect data using FlinkKafkaConsumer08 . below are the sample code . def main(args: Array[String]) { val env = StreamExecutionEnvironment.getExecutionEnvironment val properties = new Properties() properties.setProperty("bootstrap.servers", "<IPADDRESS>:9092") properties.setProperty("zookeeper.connect", "<IPADDRESS>:2181") properties.setProperty("group.id", "test") val readSchema = new TypeInformationKeyValueSerializationSchema[String,Array[Byte]](classOf[String],classOf[Array[Byte]], env.getConfig).asInstanceOf[KeyedDeserializationSchema[(String,Array[Byte])]] val stream : DataStream[(String,Array[Byte])] = env.addSource(new FlinkKafkaConsumer08[(String,Array[Byte])]("a-0",readSchema, properties)) stream.print env.execute("Flink Kafka Example") } but getting below error : 16/04/22 13:43:39 INFO ExecutionGraph: Source: Custom Source -> Sink: Unnamed (1/4) (d7a151560f6eabdc587a23dc0975cb84) switched from RUNNING to FAILED 16/04/22 13:43:39 INFO ExecutionGraph: Source: Custom Source -> Sink: Unnamed (2/4) (d43754a27e402ed5b02a73d1c9aa3125) switched from RUNNING to CANCELING java.lang.Exception at org.apache.flink.streaming.connectors.kafka.internals.LegacyFetcher.run(LegacyFetcher.java:222) at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumer08.run(FlinkKafkaConsumer08.java:316) at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:78) at org.apache.flink.streaming.runtime.tasks.SourceStreamTask.run(SourceStreamTask.java:56) at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:225) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:559) at java.lang.Thread.run(Thread.java:745) Caused by: java.io.EOFException at org.apache.flink.runtime.util.DataInputDeserializer.readUnsignedByte(DataInputDeserializer.java:298) at org.apache.flink.types.StringValue.readString(StringValue.java:771) at org.apache.flink.api.common.typeutils.base.StringSerializer.deserialize(StringSerializer.java:69) at org.apache.flink.api.common.typeutils.base.StringSerializer.deserialize(StringSerializer.java:28) at org.apache.flink.streaming.util.serialization.TypeInformationKeyValueSerializationSchema.deserialize(TypeInformationKeyValueSerializationSchema.java:105) at org.apache.flink.streaming.util.serialization.TypeInformationKeyValueSerializationSchema.deserialize(TypeInformationKeyValueSerializationSchema.java:39) at org.apache.flink.streaming.connectors.kafka.internals.LegacyFetcher$SimpleConsumerThread.run(LegacyFetcher.java:657) Regards Prateek -- View this message in context: http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/Getting-java-lang-Exception-when-try-to-fetch-data-from-Kafka-tp6365.html Sent from the Apache Flink User Mailing List archive. mailing list archive at Nabble.com.