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https://issues.apache.org/jira/browse/KAFKA-4172?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jason Gustafson resolved KAFKA-4172.
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Resolution: Fixed
Issue resolved by pull request 1857
[https://github.com/apache/kafka/pull/1857]
> Fix masked test error in
> KafkaConsumerTest.testSubscriptionChangesWithAutoCommitEnabled
> ---------------------------------------------------------------------------------------
>
> Key: KAFKA-4172
> URL: https://issues.apache.org/jira/browse/KAFKA-4172
> Project: Kafka
> Issue Type: Bug
> Components: consumer, unit tests
> Reporter: Jason Gustafson
> Assignee: Jason Gustafson
> Fix For: 0.10.1.0
>
>
> This test case has an incorrectly matched mock fetch response, which was
> silently raising an NPE, which was caught in NetworkClient. In general, aside
> from fixing the test, we are probably missing a null check in the
> FetchRespose to verify that the partitions included in the fetch response
> were actually requested. This is usually not a problem because the broker
> doesn't send us invalid fetch responses, but it's probably better to be a
> little more defensive when handling responses.
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