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Posted to issues@flink.apache.org by "Qingsheng Ren (Jira)" <ji...@apache.org> on 2021/01/27 09:25:00 UTC

[jira] [Created] (FLINK-21160) ValueDeserializerWrapper throws NullPointerException when getProducedType is invoked

Qingsheng Ren created FLINK-21160:
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             Summary: ValueDeserializerWrapper throws NullPointerException when getProducedType is invoked
                 Key: FLINK-21160
                 URL: https://issues.apache.org/jira/browse/FLINK-21160
             Project: Flink
          Issue Type: Bug
          Components: Connectors / Kafka
            Reporter: Qingsheng Ren


The variable {{deserializer}} in class {{ValueDeserializerWrapper}} won't be instantiated until method {{deserialize()}} is invoked in runtime, so in the job compiling stage when invoking {{getProducedType()}}, NPE will be thrown because of referencing the uninstantiated variable {{deserializer}}.



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