EmbeddedFileSourceCsvReaderFormatTests.test_csv_add_columns_from fails on AZP

Jun 20 03:09:48 =================================== FAILURES ===================================
Jun 20 03:09:48 _______ EmbeddedFileSourceCsvReaderFormatTests.test_csv_add_columns_from _______
Jun 20 03:09:48 
Jun 20 03:09:48 self = <pyflink.datastream.formats.tests.test_csv.EmbeddedFileSourceCsvReaderFormatTests testMethod=test_csv_add_columns_from>
Jun 20 03:09:48 
Jun 20 03:09:48     def test_csv_add_columns_from(self):
Jun 20 03:09:48         original_schema, lines = _create_csv_primitive_column_schema_and_lines()
Jun 20 03:09:48         schema = CsvSchema.builder().add_columns_from(original_schema).build()
Jun 20 03:09:48         self._build_csv_job(schema, lines)
Jun 20 03:09:48     
Jun 20 03:09:48 >       self.env.execute('test_csv_schema_copy')
Jun 20 03:09:48 
Jun 20 03:09:48 pyflink/datastream/formats/tests/test_csv.py:56: 
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