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Posted to issues@flink.apache.org by "Qingsheng Ren (Jira)" <ji...@apache.org> on 2020/12/03 04:04:00 UTC

[jira] [Created] (FLINK-20459) Handle null message correctly in JSON RowData deserializer

Qingsheng Ren created FLINK-20459:
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             Summary: Handle null message correctly in JSON RowData deserializer
                 Key: FLINK-20459
                 URL: https://issues.apache.org/jira/browse/FLINK-20459
             Project: Flink
          Issue Type: Bug
          Components: Formats (JSON, Avro, Parquet, ORC, SequenceFile)
            Reporter: Qingsheng Ren


Currently if the input message of the `deserialize()` method is null and the deserializer is not ignoring parse errors, `new String(message)` in the exception part will lead to an NPE.

 

A possible solution is returning null directly if the input message is null, but I'm not sure if this is a correct behavior since a null message can be treated as a "corrupted" message which cannot be deserialized as JSON and should lead to an exception. 



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