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https://issues.apache.org/jira/browse/FLINK-9627?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dominik Wosiński updated FLINK-9627:
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Affects Version/s: 1.5.0
> Extending 'KafkaJsonTableSource' according to comments will result in NPE
> -------------------------------------------------------------------------
>
> Key: FLINK-9627
> URL: https://issues.apache.org/jira/browse/FLINK-9627
> Project: Flink
> Issue Type: Bug
> Affects Versions: 1.5.0
> Reporter: Dominik Wosiński
> Priority: Major
>
> According to the comments what is needed to extend the 'KafkaJsonTableSource'
> looks as follows:
>
> {code:java}
> A version-agnostic Kafka JSON {@link StreamTableSource}.
> *
> * <p>The version-specific Kafka consumers need to extend this class and
> * override {@link #createKafkaConsumer(String, Properties,
> DeserializationSchema)}}.
> *
> * <p>The field names are used to parse the JSON file and so are the
> types.{code}
> This will cause an NPE, since there is no default value for startupMode in
> the abstract class itself only in the builder of this class.
> For the 'getKafkaConsumer' method the switch statement will be executed on
> non-initialized 'startupMode' field:
> {code:java}
> switch (startupMode) {
> case EARLIEST:
> kafkaConsumer.setStartFromEarliest();
> break;
> case LATEST:
> kafkaConsumer.setStartFromLatest();
> break;
> case GROUP_OFFSETS:
> kafkaConsumer.setStartFromGroupOffsets();
> break;
> case SPECIFIC_OFFSETS:
> kafkaConsumer.setStartFromSpecificOffsets(specificStartupOffsets);
> break;
> }{code}
>
>
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