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https://issues.apache.org/jira/browse/BEAM-735?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amit Sela resolved BEAM-735.
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Resolution: Fixed
Fix Version/s: 0.3.0-incubating
> PAssertStreaming should make sure the assertion happened.
> ---------------------------------------------------------
>
> Key: BEAM-735
> URL: https://issues.apache.org/jira/browse/BEAM-735
> Project: Beam
> Issue Type: Bug
> Components: runner-spark
> Reporter: Amit Sela
> Assignee: Amit Sela
> Fix For: 0.3.0-incubating
>
>
> The Spark runner currently runs PAsserts via `PAssertStreaming` which groups
> into a single key and asserts the values on the worker (part of the "Lambda"
> in the Spark lingo).
> This could be a problem since Spark won't run if there's nothing to process -
> so that if for some reason the input is missed, say reading from Kafka latest
> or simply an empty topic, the assertion will be skipped and so we'll never
> fail (we would like to fail if there was no input, while we expected one).
> This might change once Spark provide a better support for the Beam model in
> streaming, but until then, it's best that our tests will consider this case
> as well.
> I'll add an aggregator and increment for assertion, at the end I'll make sure
> the aggregator is not 0, so that at least one assertion took place (if for
> some reason Spark kept on for a couple of more intervals it might execute the
> same assertion more then once, if the input is repeated).
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