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https://issues.apache.org/jira/browse/FLINK-31526?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17756750#comment-17756750
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Matthias Pohl commented on FLINK-31526:
---------------------------------------
I updated the title and issue description. The previous description wasn't
pointing to the actual error. But it looks the issue never appeared again
> DataStreamConversionTestCases.test_from_data_stream_with_schema failed due to
> org.apache.flink.table.types.logical.CharType not existing in the JVM
> ---------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: FLINK-31526
> URL: https://issues.apache.org/jira/browse/FLINK-31526
> Project: Flink
> Issue Type: Bug
> Components: API / Python
> Affects Versions: 1.16.1
> Reporter: Matthias Pohl
> Priority: Minor
> Labels: auto-deprioritized-major, test-stability
>
> https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=47328&view=logs&j=821b528f-1eed-5598-a3b4-7f748b13f261&t=6bb545dd-772d-5d8c-f258-f5085fba3295&l=34487
> {code}
> Mar 19 04:08:57 =================================== FAILURES
> ===================================
> Mar 19 04:08:57 _______
> DataStreamConversionTestCases.test_from_data_stream_with_schema ________
> Mar 19 04:08:57
> Mar 19 04:08:57 self =
> <pyflink.table.tests.test_table_environment_api.DataStreamConversionTestCases
> testMethod=test_from_data_stream_with_schema>
> Mar 19 04:08:57
> Mar 19 04:08:57 def test_from_data_stream_with_schema(self):
> Mar 19 04:08:57 from pyflink.table import Schema
> Mar 19 04:08:57
> Mar 19 04:08:57 ds = self.env.from_collection([(1, 'Hi', 'Hello'),
> (2, 'Hello', 'Hi')],
> Mar 19 04:08:57
> type_info=Types.ROW_NAMED(
> Mar 19 04:08:57 ["a", "b", "c"],
> Mar 19 04:08:57 [Types.INT(),
> Types.STRING(), Types.STRING()]))
> Mar 19 04:08:57
> Mar 19 04:08:57 table = self.t_env.from_data_stream(ds,
> Mar 19 04:08:57
> Schema.new_builder()
> Mar 19 04:08:57
> .column("a", DataTypes.INT())
> Mar 19 04:08:57
> .column("b", DataTypes.STRING())
> Mar 19 04:08:57
> .column("c", DataTypes.STRING())
> Mar 19 04:08:57 .build())
> Mar 19 04:08:57 result = table.execute()
> Mar 19 04:08:57 > with result.collect() as result:
> Mar 19 04:08:57
> Mar 19 04:08:57 pyflink/table/tests/test_table_environment_api.py:416:
> Mar 19 04:08:57 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
> _ _ _ _ _ _ _ _ _
> Mar 19 04:08:57 pyflink/table/table_result.py:196: in collect
> Mar 19 04:08:57 return CloseableIterator(j_iter, field_data_types)
> Mar 19 04:08:57 pyflink/table/table_result.py:229: in __init__
> Mar 19 04:08:57 self._data_types =
> [_from_java_data_type(j_field_data_type)
> Mar 19 04:08:57 pyflink/table/table_result.py:229: in <listcomp>
> Mar 19 04:08:57 self._data_types =
> [_from_java_data_type(j_field_data_type)
> Mar 19 04:08:57 pyflink/table/types.py:1693: in _from_java_data_type
> Mar 19 04:08:57 if is_instance_of(logical_type, gateway.jvm.CharType):
> Mar 19 04:08:57 pyflink/util/java_utils.py:70: in is_instance_of
> Mar 19 04:08:57 param = get_java_class(java_class)
> Mar 19 04:08:57
> .tox/py39-cython/lib/python3.9/site-packages/py4j/java_gateway.py:475: in
> get_java_class
> Mar 19 04:08:57 return java_class._java_lang_class
> Mar 19 04:08:57 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
> _ _ _ _ _ _ _ _ _
> Mar 19 04:08:57
> Mar 19 04:08:57 self = <py4j.java_gateway.JavaClass object at 0x7f12f8f855b0>
> Mar 19 04:08:57
> Mar 19 04:08:57 @property
> Mar 19 04:08:57 def _java_lang_class(self):
> Mar 19 04:08:57 """Gets the java.lang.Class of the current JavaClass.
> This is
> Mar 19 04:08:57 equivalent to calling .class in Java.
> Mar 19 04:08:57 """
> Mar 19 04:08:57 command = proto.REFLECTION_COMMAND_NAME +\
> Mar 19 04:08:57 proto.REFL_GET_JAVA_LANG_CLASS_SUB_COMMAND_NAME +\
> Mar 19 04:08:57 self._fqn + "\n" + proto.END_COMMAND_PART
> Mar 19 04:08:57 answer = self._gateway_client.send_command(command)
> Mar 19 04:08:57
> Mar 19 04:08:57 if len(answer) > 1 and answer[0] == proto.SUCCESS:
> Mar 19 04:08:57 return get_return_value(
> Mar 19 04:08:57 answer, self._gateway_client, self._fqn,
> "_java_lang_class")
> Mar 19 04:08:57 else:
> Mar 19 04:08:57 > raise Py4JError(
> Mar 19 04:08:57 "{0} does not exist in the
> JVM".format(self._fqn))
> Mar 19 04:08:57 E py4j.protocol.Py4JError:
> org.apache.flink.table.types.logical.CharType does not exist in the JVM
> [...]
> {code}
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