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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