[jira] [Created] (FLINK-29648) "LocalDateTime not supported" error when retrieving Java TypeInformation from PyFlink

["Juntao Hu (Jira)" <ji...@apache.org>]

Juntao Hu created FLINK-29648:
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             Summary: "LocalDateTime not supported" error when retrieving Java TypeInformation from PyFlink
                 Key: FLINK-29648
                 URL: https://issues.apache.org/jira/browse/FLINK-29648
             Project: Flink
          Issue Type: Bug
          Components: API / Python
    Affects Versions: 1.16.0
            Reporter: Juntao Hu
             Fix For: 1.16.0


The following code raises "TypeError: The java type info: LocalDateTime is not supported in PyFlink currently.":
{code:java}
t_env.to_data_stream(t).key_by(...){code}
However, this works:
{code:java}
t_env.to_data_stream(t).map(lambda r: r).key_by(...){code}
Although we add Python coders for LocalTimeTypeInfo in 1.16, there's no corresponding typeinfo at Python side. So it works when a user immediately does processing after to_data_stream since date/time data has already been converted to Python object, but when key_by tries to retrieve typeinfo from Java TypeInformation, it fails.



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