Yang Zhang created BEAM-7787:
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Summary: crash when UDF returns a list
Key: BEAM-7787
URL: https://issues.apache.org/jira/browse/BEAM-7787
Project: Beam
Issue Type: Bug
Components: beam-model
Reporter: Yang Zhang
In Beam UDF, is it feasible to return a list? For example, the UDF function is
defined as (input) String -> (output) List<String>,
```public static class UDF implements SerializableFunction<String,
List<String>>```
I got a nullpointerexception if a list is returned.
Best,
Yang
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