[FLINK-25216] test_sliding_group_window_over_proctime failed with "IndexError: list index out of range"

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Cannot Reproduce
• Affects Version/s: 1.15.0
• Fix Version/s: 1.15.0
• Component/s: API / Python, Tests
• Labels: test-stability
• Assignee: Huang Xingbo
• Reporter: Dian Fu
• Created: 07/Dec/21 12:33
• Updated: 02/Mar/22 02:08
• Resolved: 02/Mar/22 02:08

Description

self = <pyflink.table.tests.test_pandas_udaf.StreamPandasUDAFITTests testMethod=test_sliding_group_window_over_proctime>
Dec 06 03:10:43 
Dec 06 03:10:43     def test_sliding_group_window_over_proctime(self):
Dec 06 03:10:43         self.t_env.get_config().get_configuration().set_string("parallelism.default", "1")
Dec 06 03:10:43         from pyflink.table.window import Slide
Dec 06 03:10:43         self.t_env.register_function("mean_udaf", mean_udaf)
Dec 06 03:10:43     
Dec 06 03:10:43         source_table = """
Dec 06 03:10:43             create table source_table(
Dec 06 03:10:43                 a INT,
Dec 06 03:10:43                 proctime as PROCTIME()
Dec 06 03:10:43             ) with(
Dec 06 03:10:43                 'connector' = 'datagen',
Dec 06 03:10:43                 'rows-per-second' = '1',
Dec 06 03:10:43                 'fields.a.kind' = 'sequence',
Dec 06 03:10:43                 'fields.a.start' = '1',
Dec 06 03:10:43                 'fields.a.end' = '10'
Dec 06 03:10:43             )
Dec 06 03:10:43         """
Dec 06 03:10:43         self.t_env.execute_sql(source_table)
Dec 06 03:10:43         t = self.t_env.from_path("source_table")
Dec 06 03:10:43         iterator = t.select("a, proctime") \
Dec 06 03:10:43             .window(Slide.over("1.seconds").every("1.seconds").on("proctime").alias("w")) \
Dec 06 03:10:43             .group_by("a, w") \
Dec 06 03:10:43             .select("mean_udaf(a) as b, w.start").execute().collect()
Dec 06 03:10:43         result = [i for i in iterator]
Dec 06 03:10:43         # if the WindowAssigner.isEventTime() does not return false,
Dec 06 03:10:43         # the w.start would be 1970-01-01
Dec 06 03:10:43         # TODO: After fixing the TimeZone problem of window with processing time (will be fixed in
Dec 06 03:10:43         # FLIP-162), we should replace it with a more accurate assertion.
Dec 06 03:10:43 >       self.assertTrue(result[0][1].year > 1970)
Dec 06 03:10:43 E       IndexError: list index out of range

https://dev.azure.com/apache-flink/apache-flink/_build/results?buildId=27569&view=logs&j=3e4dd1a2-fe2f-5e5d-a581-48087e718d53&t=b4612f28-e3b5-5853-8a8b-610ae894217a&l=21780