[
https://issues.apache.org/jira/browse/BEAM-1450?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Robert Bradshaw updated BEAM-1450:
----------------------------------
Description:
A window-taking DoFn's process gets called once per window, but each output
gets placed into all windows.
E.g. the following test fails
{quote}
def test_window_param(self):
class TestDoFn(DoFn):
def process(self, element, window=DoFn.WindowParam):
yield (element, (float(window.start), float(window.end)))
pipeline = TestPipeline()
pcoll = (pipeline
| Create([1, 7])
| Map(lambda x: TimestampedValue(x, x))
| WindowInto(windowfn=SlidingWindows(10, 5))
| ParDo(TestDoFn()))
assert_that(pcoll, equal_to([(1, (-5, 5)), (1, (0, 10)),
(7, (0, 10)), (7, (5, 15))]))
pcoll2 = pcoll | 'Again' >> ParDo(TestDoFn())
assert_that(
pcoll2,
equal_to([
((1, (-5, 5)), (-5, 5)), ((1, (0, 10)), (0, 10)),
((7, (0, 10)), (0, 10)), ((7, (5, 15)), (5, 15))]),
label='doubled windows')
pipeline.run()
{quote}
was:
A window-taking DoFn's process gets called once per window, but each output
gets placed into all windows.
E.g. the following test fails
def test_window_param(self):
class TestDoFn(DoFn):
def process(self, element, window=DoFn.WindowParam):
yield (element, (float(window.start), float(window.end)))
pipeline = TestPipeline()
pcoll = (pipeline
| Create([1, 7])
| Map(lambda x: TimestampedValue(x, x))
| WindowInto(windowfn=SlidingWindows(10, 5))
| ParDo(TestDoFn()))
assert_that(pcoll, equal_to([(1, (-5, 5)), (1, (0, 10)),
(7, (0, 10)), (7, (5, 15))]))
pcoll2 = pcoll | 'Again' >> ParDo(TestDoFn())
assert_that(
pcoll2,
equal_to([
((1, (-5, 5)), (-5, 5)), ((1, (0, 10)), (0, 10)),
((7, (0, 10)), (0, 10)), ((7, (5, 15)), (5, 15))]),
label='doubled windows')
pipeline.run()
> NewDoFn does not properly explode windows
> -----------------------------------------
>
> Key: BEAM-1450
> URL: https://issues.apache.org/jira/browse/BEAM-1450
> Project: Beam
> Issue Type: Bug
> Components: sdk-py
> Reporter: Robert Bradshaw
> Assignee: Robert Bradshaw
>
> A window-taking DoFn's process gets called once per window, but each output
> gets placed into all windows.
> E.g. the following test fails
> {quote}
> def test_window_param(self):
> class TestDoFn(DoFn):
> def process(self, element, window=DoFn.WindowParam):
> yield (element, (float(window.start), float(window.end)))
> pipeline = TestPipeline()
> pcoll = (pipeline
> | Create([1, 7])
> | Map(lambda x: TimestampedValue(x, x))
> | WindowInto(windowfn=SlidingWindows(10, 5))
> | ParDo(TestDoFn()))
> assert_that(pcoll, equal_to([(1, (-5, 5)), (1, (0, 10)),
> (7, (0, 10)), (7, (5, 15))]))
> pcoll2 = pcoll | 'Again' >> ParDo(TestDoFn())
> assert_that(
> pcoll2,
> equal_to([
> ((1, (-5, 5)), (-5, 5)), ((1, (0, 10)), (0, 10)),
> ((7, (0, 10)), (0, 10)), ((7, (5, 15)), (5, 15))]),
> label='doubled windows')
> pipeline.run()
> {quote}
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