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https://issues.apache.org/jira/browse/BEAM-1712?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Stas Levin reassigned BEAM-1712:
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Assignee: (was: Stas Levin)
> TestPipeline.run should perhaps waitUntilFinish
> -----------------------------------------------
>
> Key: BEAM-1712
> URL: https://issues.apache.org/jira/browse/BEAM-1712
> Project: Beam
> Issue Type: Bug
> Components: runner-flink, sdk-java-core, testing
> Reporter: Eugene Kirpichov
> Priority: Minor
>
> https://github.com/apache/beam/blob/master/sdks/java/core/src/main/java/org/apache/beam/sdk/testing/TestPipeline.java#L124
> it calls waitUntilFinish() only if
> 1) run wasn't called
> 2) enableAutoRunIfMissing is true.
> However in practice both of these are false.
> 1) run() is, in most tests, called. So effectively if you call .run() at all,
> then this thing doesn't call waitUntilFinish().
> 2) enableAutoRunIfMissing() is set to true only via
> TestPipeline.enableAutoRunIfMissing(), which is called only from its own unit
> test.
> This means that, for all tests that use TestPipeline - if the test waits
> until finish, it's only because of the grace of the particular runner. Which
> is like really bad.
> We're lucky because in practice TestDataflowRunner, TestApexRunner,
> TestSparkRunner in run() call themselves waitUntilFinish().
> However, TestFlinkRunner doesn't - i.e. there currently might be tests that
> actually fail in Flink runner, undetected.
> The proper fix to this is to fix TestPipeline to always waitUntilFinish().
> Currently testing a quick-fix in https://github.com/apache/beam/pull/2240 to
> make sure Flink is safe.
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