Benchao Li created FLINK-16220:
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Summary: JsonRowSerializationSchema throws cast exception :
NullNode cannot be cast to ArrayNode
Key: FLINK-16220
URL: https://issues.apache.org/jira/browse/FLINK-16220
Project: Flink
Issue Type: Bug
Components: Formats (JSON, Avro, Parquet, ORC, SequenceFile)
Reporter: Benchao Li
It's because the object reuse. For the below schema:
{code:java}
create table sink {
col1 int,
col2 array<int>
}{code}
if col2 is null, then the reused object will be {{NullNode}}. for the next
record, if it's not null, we will cast the reused object {{NullNode}} to
{{ArrayNode}}, which will throw cast exception.
cc [~jark] [~twalthr]
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