GJL commented on issue #9271: [FLINK-13384][1.9][runtime] Fix back pressure sampling for SourceStreamTask URL: https://github.com/apache/flink/pull/9271#issuecomment-517003718 Kafka 0.10 E2E test fails due to: ``` java.lang.Exception: org.apache.kafka.common.config.ConfigException: Invalid value org.apache.kafka.common.serialization.ByteArrayDeserializer for conf iguration value.deserializer: Class org.apache.kafka.common.serialization.ByteArrayDeserializer could not be found. at org.apache.flink.streaming.runtime.tasks.SourceStreamTask$LegacySourceFunctionThread.checkThrowSourceExecutionException(SourceStreamTask.jav a:212) at org.apache.flink.streaming.runtime.tasks.SourceStreamTask.performDefaultAction(SourceStreamTask.java:132) at org.apache.flink.streaming.runtime.tasks.StreamTask.run(StreamTask.java:298) at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:403) at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:700) at org.apache.flink.runtime.taskmanager.Task.run(Task.java:530) at java.lang.Thread.run(Thread.java:748) Caused by: org.apache.kafka.common.config.ConfigException: Invalid value org.apache.kafka.common.serialization.ByteArrayDeserializer for configuration value.deserializer: Class org.apache.kafka.common.serialization.ByteArrayDeserializer could not be found. at org.apache.kafka.common.config.ConfigDef.parseType(ConfigDef.java:690) at org.apache.kafka.common.config.ConfigDef.parse(ConfigDef.java:433) at org.apache.kafka.common.config.AbstractConfig.<init>(AbstractConfig.java:56) at org.apache.kafka.common.config.AbstractConfig.<init>(AbstractConfig.java:63) at org.apache.kafka.clients.consumer.ConsumerConfig.<init>(ConsumerConfig.java:426) at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:597) at org.apache.kafka.clients.consumer.KafkaConsumer.<init>(KafkaConsumer.java:579) at org.apache.flink.streaming.connectors.kafka.internal.KafkaConsumerThread.getConsumer(KafkaConsumerThread.java:502) at org.apache.flink.streaming.connectors.kafka.internal.KafkaConsumerThread.run(KafkaConsumerThread.java:181) ```
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