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https://issues.apache.org/jira/browse/BEAM-8557?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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sunjincheng closed BEAM-8557.
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Resolution: Fixed
> Clean up useless null check.
> ----------------------------
>
> Key: BEAM-8557
> URL: https://issues.apache.org/jira/browse/BEAM-8557
> Project: Beam
> Issue Type: Sub-task
> Components: runner-core, sdk-java-harness
> Reporter: sunjincheng
> Assignee: sunjincheng
> Priority: Major
> Fix For: 2.18.0
>
> Time Spent: 2h 20m
> Remaining Estimate: 0h
>
> I think we do not need null check here:
> [https://github.com/apache/beam/blob/master/runners/java-fn-execution/src/main/java/org/apache/beam/runners/fnexecution/control/FnApiControlClient.java#L151]
> Because before the the `onNext` call, the `Future` already put into the queue
> in `handle` method.
>
> I found the test as follows:
> {code:java}
> @Test
> public void testUnknownResponseIgnored() throws Exception{code}
> I do not know why we need test this case? I think it would be better if we
> throw the Exception for an UnknownResponse, otherwise, this may hidden a
> potential bug.
> Please correct me if there anything I misunderstand @kennknowles
>
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