[
https://issues.apache.org/jira/browse/BEAM-10005?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Darshan Jani updated BEAM-10005:
--------------------------------
Description:
Unable to use ApproximateQuantiles.globally or ApproximateQuantiles.globally
with input windowed not using GlobalWindows.
To make it run we need to set either
{code:java}
.withoutDefaults()
{code}
or
{code:java}
.asSingletonView()
{code}
Currently we can't call any of the above on ApproximateQuantiles.globally() as
it does not return underlying Combine.globally, but PTransform.
Example failing case:
{code:java}
PCollection<Long> elements = p.apply(GenerateSequence.from(0).to(100)
.withRate(1,Duration.millis(1)).withTimestampFn(Instant::new));
PCollection<List<Long>> input = elements
.apply(Window.into(SlidingWindows.of(Duration.millis(3)).every(Duration.millis(1))))
.apply(ApproximateQuantiles.globally(17));
{code}
It throws expected error from internal Combine.globally() transform:
{code:java}
Default values are not supported in Combine.globally() if the input PCollection
is not windowed by GlobalWindows. Instead, use
Combine.globally().withoutDefaults() to output an empty PCollection if the
input PCollection is empty, or Combine.globally().asSingletonView() to get the
default output of the CombineFn if the input PCollection is empty.
{code}
was:
Unable to use ApproximateQuantiles.globally with input windowed not using
GlobalWindows.
To make it run we need to set either
{code:java}
.withoutDefaults()
{code}
or
{code:java}
.asSingletonView()
{code}
Currently we can't call any of the above on ApproximateQuantiles.globally() as
it does not return underlying Combine.globally, but PTransform.
Example failing case:
{code:java}
PCollection<Long> elements = p.apply(GenerateSequence.from(0).to(100)
.withRate(1,Duration.millis(1)).withTimestampFn(Instant::new));
PCollection<List<Long>> input = elements
.apply(Window.into(SlidingWindows.of(Duration.millis(3)).every(Duration.millis(1))))
.apply(ApproximateQuantiles.globally(17));
{code}
It throws expected error from internal Combine.globally() transform:
{code:java}
Default values are not supported in Combine.globally() if the input PCollection
is not windowed by GlobalWindows. Instead, use
Combine.globally().withoutDefaults() to output an empty PCollection if the
input PCollection is empty, or Combine.globally().asSingletonView() to get the
default output of the CombineFn if the input PCollection is empty.
{code}
> Unable to use ApproximateQuantiles.globally/ApproximateUniques.globally when
> inputs not windowed by GlobalWindows
> -----------------------------------------------------------------------------------------------------------------
>
> Key: BEAM-10005
> URL: https://issues.apache.org/jira/browse/BEAM-10005
> Project: Beam
> Issue Type: Bug
> Components: sdk-java-core
> Affects Versions: 2.20.0
> Reporter: Darshan Jani
> Assignee: Darshan Jani
> Priority: Major
>
> Unable to use ApproximateQuantiles.globally or ApproximateQuantiles.globally
> with input windowed not using GlobalWindows.
> To make it run we need to set either
> {code:java}
> .withoutDefaults()
> {code}
> or
> {code:java}
> .asSingletonView()
> {code}
> Currently we can't call any of the above on ApproximateQuantiles.globally()
> as it does not return underlying Combine.globally, but PTransform.
> Example failing case:
> {code:java}
> PCollection<Long> elements = p.apply(GenerateSequence.from(0).to(100)
> .withRate(1,Duration.millis(1)).withTimestampFn(Instant::new));
> PCollection<List<Long>> input = elements
>
> .apply(Window.into(SlidingWindows.of(Duration.millis(3)).every(Duration.millis(1))))
> .apply(ApproximateQuantiles.globally(17));
> {code}
> It throws expected error from internal Combine.globally() transform:
> {code:java}
> Default values are not supported in Combine.globally() if the input
> PCollection is not windowed by GlobalWindows. Instead, use
> Combine.globally().withoutDefaults() to output an empty PCollection if the
> input PCollection is empty, or Combine.globally().asSingletonView() to get
> the default output of the CombineFn if the input PCollection is empty.
> {code}
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