[jira] [Created] (FLINK-8497) KafkaConsumer throws NPE if topic doesn't exist

["chris snow (JIRA)" <ji...@apache.org>]

chris snow created FLINK-8497:
---------------------------------

             Summary: KafkaConsumer throws NPE if topic doesn't exist
                 Key: FLINK-8497
                 URL: https://issues.apache.org/jira/browse/FLINK-8497
             Project: Flink
          Issue Type: Bug
          Components: Kafka Connector
    Affects Versions: 1.4.0
            Reporter: chris snow


If I accidentally set the kafka consumer with a topic that doesn't exist:
{code:java}
FlinkKafkaConsumer011 kafkaConsumer = new FlinkKafkaConsumer011(
   "does_not_exist",
    new JSONKeyValueDeserializationSchema(false),
    properties
    );
DataStream<String> input = env.addSource(kafkaConsumer);{code}
Flink throws NPE
{code:java}
Caused by: java.lang.NullPointerException
at org.apache.flink.streaming.connectors.kafka.internal.Kafka09PartitionDiscoverer.getAllPartitionsForTopics(Kafka09PartitionDiscoverer.java:75)
at org.apache.flink.streaming.connectors.kafka.internals.AbstractPartitionDiscoverer.discoverPartitions(AbstractPartitionDiscoverer.java:128)
at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase.open(FlinkKafkaConsumerBase.java:415)
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.openAllOperators(StreamTask.java:393)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:254)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:718)
at java.lang.Thread.run(Thread.java:748){code}
Maybe Flink could through an IllegalStateException("Topic not found")?



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